These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery, then no amount of transformation is going to increase the energy content.
Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:A fully charged car battery stores megajoules. It takes kilojoules to
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery, then no amount of transformation is going to increase the energy content.
Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.
start a car. So a 99% dead battery still has enough energy to start a
car.
An ohmic load, like an old incandescent lamp, can totally discharge a
battery, but modern loads are electronic, nonlinear, so a modern car
doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most
such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over, it's going to take forever to charge the supercapacitor.
It sounds like the product is for more of the situation of a battery with heavily sulfated electrodes.
I've noticed the super capacitors have come a long ways in miniaturization, so much so they're now being incorporated in standalone miniature
millipower PV remote systems. They're all still low voltage but that's okay for logic circuits.
Hey, it's almost New Years Day, household battey replacement day!
Don't your detectors have the low batt beep alert?
On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote: >>>>> These things claim to be able to charge up from a near dead 12V carA fully charged car battery stores megajoules. It takes kilojoules to
battery in just a few moments and then provide enough power to spin a >>>>> car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered >>>>> car battery with a terminal voltage of only 9 or 10 volts, this thing >>>>> can draw enough energy out of it to provide 14V at sufficient current >>>>> to spin over an engine of over 400CI (that's a typically touted figure >>>>> for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but >>>>> was put off by the thought of having a bunch of lithium cells go up in >>>>> flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery, then no amount of transformation is going to increase the energy content.
Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.
start a car. So a 99% dead battery still has enough energy to start a
car.
An ohmic load, like an old incandescent lamp, can totally discharge a
battery, but modern loads are electronic, nonlinear, so a modern car
doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most
such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over, it's going to take forever to charge the supercapacitor.
Sounds like 10 minutes is typical.
It sounds like the product is for more of the situation of a battery with heavily sulfated electrodes.
I've noticed the super capacitors have come a long ways in miniaturization, so much so they're now being incorporated in standalone miniature
millipower PV remote systems. They're all still low voltage but that's okay for logic circuits.
Hey, it's almost New Years Day, household battey replacement day!
Don't your detectors have the low batt beep alert?
The smoke+co detectors have 10-year lithium batteries.
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggsthen no amount of transformation is going to increase the energy content.
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote: >> >> >> These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a >> >> >> car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered >> >> >> car battery with a terminal voltage of only 9 or 10 volts, this thing >> >> >> can draw enough energy out of it to provide 14V at sufficient current >> >> >> to spin over an engine of over 400CI (that's a typically touted figure >> >> >> for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but >> >> >> was put off by the thought of having a bunch of lithium cells go up in >> >> >> flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.A fully charged car battery stores megajoules. It takes kilojoules to
Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.
start a car. So a 99% dead battery still has enough energy to start a
car.
An ohmic load, like an old incandescent lamp, can totally discharge a
battery, but modern loads are electronic, nonlinear, so a modern car
doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most
such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
In article <1151cf17-e9c1-413e-ac0d-192a91e0f58dn@googlegroups.com>,
Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggsthen no amount of transformation is going to increase the energy content.
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car >>> >> >> battery in just a few moments and then provide enough power to spin a >>> >> >> car over and start it. And moreover to be able to do this up to 25 >>> >> >> times before the stored charged runs out. So say you have a knackered >>> >> >> car battery with a terminal voltage of only 9 or 10 volts, this thing >>> >> >> can draw enough energy out of it to provide 14V at sufficient current >>> >> >> to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a >>> >> >> diesel).
It's the energy involved that I'm struggling to get my head around >>> >> >> here. How is this seemingly miraculous tranformation achieved? I've >>> >> >> been wanting to get a jump starter for emergencies for some time, but >>> >> >> was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.A fully charged car battery stores megajoules. It takes kilojoules to >>> >> start a car. So a 99% dead battery still has enough energy to start a >>> >> car.
Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.
An ohmic load, like an old incandescent lamp, can totally discharge a >>> >> battery, but modern loads are electronic, nonlinear, so a modern car
doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most
such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
I have discharged the gel battery of my Ford Mondeo Ghia several times
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Groetjes Albert
lørdag den 30. december 2023 kl. 19.08.54 UTC+1 skrev Fred Bloggs:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V carLow battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery, then no amount of transformation is going to increase the energy content.
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.
you don't need lots of energy, you just need enough peak power to turn the starter for a few seconds
a wimpy battery can slowly charge a supercap that can then provide the peak power needed
really just an electric version of an inertial starter, like this
https://youtu.be/86xtTVMBTCQ?si=TKmIVpn4Xt4G3626&t=342
On Sun, 31 Dec 2023 12:08:14 +0100, albert@cherry.(none) (albert)
wrote:
In article <1151cf17-e9c1-413e-ac0d-192a91e0f58dn@googlegroups.com>,
Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote: >>>> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:then no amount of transformation is going to increase the energy content. >>>> >> >
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote: >>>> >> On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car >>>> >> >> battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25 >>>> >> >> times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a >>>> >> >> diesel).
It's the energy involved that I'm struggling to get my head around >>>> >> >> here. How is this seemingly miraculous tranformation achieved? I've >>>> >> >> been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.A fully charged car battery stores megajoules. It takes kilojoules to >>>> >> start a car. So a 99% dead battery still has enough energy to start a >>>> >> car.
An ohmic load, like an old incandescent lamp, can totally discharge a >>>> >> battery, but modern loads are electronic, nonlinear, so a modern car >>>> >> doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most >>>> >> such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
I have discharged the gel battery of my Ford Mondeo Ghia several times
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Groetjes Albert
The auto supply stores here sell battery chargers that won't put
current into a low-voltage battery. The explanation is that the
battery is ruined, and of course you have to buy a new one.
I keep a bench power supply around. It will charge a "dead" battery,
and then it's good for a few more years.
Once I cobbled up a charger from a diode and a hair dryer, off the
120v AC line. That put enough voltage into the battery for the "smart" >charger to take over.
On Sun, 31 Dec 2023 12:08:14 +0100, albert@cherry.(none) (albert)
wrote:
In article <1151cf17-e9c1-413e-ac0d-192a91e0f58dn@googlegroups.com>,
Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggsthen no amount of transformation is going to increase the energy content. >>>>>>>
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote: >>>>>> On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car >>>>>>>> battery in just a few moments and then provide enough power to spin a >>>>>>>> car over and start it. And moreover to be able to do this up to 25 >>>>>>>> times before the stored charged runs out. So say you have a knackered >>>>>>>> car battery with a terminal voltage of only 9 or 10 volts, this thing >>>>>>>> can draw enough energy out of it to provide 14V at sufficient current >>>>>>>> to spin over an engine of over 400CI (that's a typically touted figure >>>>>>>> for a normally aspirated petrol/gas engine and about 2/3 that for a >>>>>>>> diesel).
It's the energy involved that I'm struggling to get my head around >>>>>>>> here. How is this seemingly miraculous tranformation achieved? I've >>>>>>>> been wanting to get a jump starter for emergencies for some time, but >>>>>>>> was put off by the thought of having a bunch of lithium cells go up in >>>>>>>> flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.A fully charged car battery stores megajoules. It takes kilojoules to >>>>>> start a car. So a 99% dead battery still has enough energy to start a >>>>>> car.
An ohmic load, like an old incandescent lamp, can totally discharge a >>>>>> battery, but modern loads are electronic, nonlinear, so a modern car >>>>>> doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most >>>>>> such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
I have discharged the gel battery of my Ford Mondeo Ghia several times
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Groetjes Albert
The auto supply stores here sell battery chargers that won't put
current into a low-voltage battery. The explanation is that the
battery is ruined, and of course you have to buy a new one.
I keep a bench power supply around. It will charge a "dead" battery,
and then it's good for a few more years.
Once I cobbled up a charger from a diode and a hair dryer, off the
120v AC line. That put enough voltage into the battery for the "smart" charger to take over.
On Sun, 31 Dec 2023 08:14:15 -0800, John Larkin <jl@997PotHill.com>
wrote:
On Sun, 31 Dec 2023 12:08:14 +0100, albert@cherry.(none) (albert)
wrote:
In article <1151cf17-e9c1-413e-ac0d-192a91e0f58dn@googlegroups.com>,
Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote: >>>>> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:then no amount of transformation is going to increase the energy content. >>>>> >> >
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote: >>>>> >> On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car >>>>> >> >> battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25 >>>>> >> >> times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a >>>>> >> >> diesel).
It's the energy involved that I'm struggling to get my head around >>>>> >> >> here. How is this seemingly miraculous tranformation achieved? I've >>>>> >> >> been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.A fully charged car battery stores megajoules. It takes kilojoules to >>>>> >> start a car. So a 99% dead battery still has enough energy to start a >>>>> >> car.
An ohmic load, like an old incandescent lamp, can totally discharge a >>>>> >> battery, but modern loads are electronic, nonlinear, so a modern car >>>>> >> doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most >>>>> >> such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm >>>>> >> optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
I have discharged the gel battery of my Ford Mondeo Ghia several times
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking >>>lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Groetjes Albert
The auto supply stores here sell battery chargers that won't put
current into a low-voltage battery. The explanation is that the
battery is ruined, and of course you have to buy a new one.
I keep a bench power supply around. It will charge a "dead" battery,
and then it's good for a few more years.
Once I cobbled up a charger from a diode and a hair dryer, off the
120v AC line. That put enough voltage into the battery for the "smart" >>charger to take over.
These "smart" chargers are just awful (just like most other stuff
marketed as "smart" - it's only smart for the company selling it, not
the customer).
You're better of with an old fashioned trickle charger at a couple of
amps. Yes, it takes an age, but it never fails and doesn't stress the >battery.
Once I cobbled up a charger from a diode and a hair dryer, off the
120v AC line. That put enough voltage into the battery for the "smart" charger to take over.
current into a low-voltage battery. The explanation is that theOn Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote: >>The auto supply stores here sell battery chargers that won't put
battery is ruined, and of course you have to buy a new one.
I keep a bench power supply around. It will charge a "dead" battery,
and then it's good for a few more years.
Once I cobbled up a charger from a diode and a hair dryer, off the
120v AC line. That put enough voltage into the battery for the "smart" >>charger to take over.
These "smart" chargers are just awful (just like most other stuff
marketed as "smart" - it's only smart for the company selling it, not
the customer).
You're better of with an old fashioned trickle charger at a couple of
amps. Yes, it takes an age, but it never fails and doesn't stress the >battery.
On Saturday, December 30, 2023 at 8:06:45 AM UTC-6, Jan Panteltje w=
rote:
On a sunny day (Sat, 30 Dec 2023 13:20:16 +0000) it happened Cursitor Doo= >m
<c...@notformail.com> wrote in <fj50pilsqq9h8mo64...@4ax.com>:
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure=
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in=
flames on me. This would seem to eliminate that risk.It's simple, the battery open circuit voltage is much higher so say 14V=
The sup[p]er capacitor will charge to that in a while..
When the battery is directly on the start motor the high internal resista= >nce of an
almost empty battery will cause the voltage to drop to a useless low valu= >e,
nothing happens.
The internal resistance of a sup[p]er capacitor is extremely low,
So connecting it will put the full 14V or so on the starter motor.
So it is long charge time at a low current versus starting at a high curr= >ent in a much shorter time.
The amount of charge in - and out (energy) is the same,
All that said I once had a Peugeot station where I could stick the crack = >in and start it
with real muscle power.
Of course, once you stick the crack in you can do superhuman things!
On 31.12.2023 18.14, John Larkin wrote:
On Sun, 31 Dec 2023 12:08:14 +0100, albert@cherry.(none) (albert)
wrote:
In article <1151cf17-e9c1-413e-ac0d-192a91e0f58dn@googlegroups.com>,
Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote: >>>>> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:then no amount of transformation is going to increase the energy content. >>>>>>>>
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote: >>>>>>> On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car >>>>>>>>> battery in just a few moments and then provide enough power to spin a >>>>>>>>> car over and start it. And moreover to be able to do this up to 25 >>>>>>>>> times before the stored charged runs out. So say you have a knackered >>>>>>>>> car battery with a terminal voltage of only 9 or 10 volts, this thing >>>>>>>>> can draw enough energy out of it to provide 14V at sufficient current >>>>>>>>> to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a >>>>>>>>> diesel).
It's the energy involved that I'm struggling to get my head around >>>>>>>>> here. How is this seemingly miraculous tranformation achieved? I've >>>>>>>>> been wanting to get a jump starter for emergencies for some time, but >>>>>>>>> was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.A fully charged car battery stores megajoules. It takes kilojoules to >>>>>>> start a car. So a 99% dead battery still has enough energy to start a >>>>>>> car.
An ohmic load, like an old incandescent lamp, can totally discharge a >>>>>>> battery, but modern loads are electronic, nonlinear, so a modern car >>>>>>> doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most >>>>>>> such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm >>>>>>> optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
I have discharged the gel battery of my Ford Mondeo Ghia several times
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Groetjes Albert
The auto supply stores here sell battery chargers that won't put
current into a low-voltage battery. The explanation is that the
battery is ruined, and of course you have to buy a new one.
I keep a bench power supply around. It will charge a "dead" battery,
and then it's good for a few more years.
Once I cobbled up a charger from a diode and a hair dryer, off the
120v AC line. That put enough voltage into the battery for the "smart"
charger to take over.
Careful with the bench power supplies: They do not like if there is a
storage battery with some life in the output and the input goes off.
In cold winters we had more than enough of bench power supplies to
repair. It begins to be cold enough now (around -18 C or 0 F).
Careful with the bench power supplies: They do not like if there is a
storage battery with some life in the output and the input goes off.
That sounds like a very bad design, linear or switching.
In cold winters we had more than enough of bench power supplies to
repair. It begins to be cold enough now (around -18 C or 0 F).
On Sunday, December 31, 2023 at 6:08:27 AM UTC-5, none albert wrote:
In article <1151cf17-e9c1-413e...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote:I have discharged the gel battery of my Ford Mondeo Ghia several times
On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggsthen no amount of transformation is going to increase the energy content. >> >> >> >
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote: >> >> >> On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car >> >> >> >> battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25 >> >> >> >> times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a >> >> >> >> diesel).
It's the energy involved that I'm struggling to get my head around >> >> >> >> here. How is this seemingly miraculous tranformation achieved? I've >> >> >> >> been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.A fully charged car battery stores megajoules. It takes kilojoules to >> >> >> start a car. So a 99% dead battery still has enough energy to start a >> >> >> car.
An ohmic load, like an old incandescent lamp, can totally discharge a >> >> >> battery, but modern loads are electronic, nonlinear, so a modern car >> >> >> doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most
such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Most chargers won't charge a battery with that low of a terminal voltage, they assume it's a shorted cell.
--
Groetjes Albert
On 2.1.2024 21.01, john larkin wrote:
Careful with the bench power supplies: They do not like if there is a
storage battery with some life in the output and the input goes off.
That sounds like a very bad design, linear or switching.
In cold winters we had more than enough of bench power supplies to
repair. It begins to be cold enough now (around -18 C or 0 F).
That happened in the 1970's, when we had a couple of pretty cold
winters, down to -30C. The power supplies were off-the-shelf lab
power supplies common at that time, no switchers at all.
In article <bd636389-0a66-4610-9da1-48204bfdbc0an@googlegroups.com>,
Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:
On Sunday, December 31, 2023 at 6:08:27 AM UTC-5, none albert wrote:
In article <1151cf17-e9c1-413e...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote: >>> >> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred BloggsI have discharged the gel battery of my Ford Mondeo Ghia several times
<bloggs.fred...@gmail.com> wrote:then no amount of transformation is going to increase the energy content. >>> >> >> >
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote: >>> >> >> On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25 >>> >> >> >> times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around >>> >> >> >> here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.A fully charged car battery stores megajoules. It takes kilojoules to >>> >> >> start a car. So a 99% dead battery still has enough energy to start a >>> >> >> car.
An ohmic load, like an old incandescent lamp, can totally discharge a >>> >> >> battery, but modern loads are electronic, nonlinear, so a modern car >>> >> >> doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most >>> >> >> such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm
optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Most chargers won't charge a battery with that low of a terminal voltage, they assume it's a shorted cell.
I do not use a charger. I use a power supply with regulated voltage and a >current limiter. In the beginning I charge with 10 mA or such.
I only charge with a less than 1 Volt over the current battery voltage.
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25 times before the stored charged runs out. So say you have a knackered car
battery with a terminal voltage of only 9 or 10 volts, this thing can
draw enough energy out of it to provide 14V at sufficient current to
spin over an engine of over 400CI (that's a typically touted figure for
a normally aspirated petrol/gas engine and about 2/3 that for a diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
tirsdag den 2. januar 2024 kl. 22.06.40 UTC+1 skrev none albert:
In article <bd636389-0a66-4610...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Sunday, December 31, 2023 at 6:08:27?AM UTC-5, none albert wrote:I do not use a charger. I use a power supply with regulated voltage and a
In article <1151cf17-e9c1-413e...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48?PM UTC-5, John Larkin wrote: >> >> >> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred BloggsI have discharged the gel battery of my Ford Mondeo Ghia several times
<bloggs.fred...@gmail.com> wrote:then no amount of transformation is going to increase the energy content.
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor Doom wrote:
These things claim to be able to charge up from a near dead 12V car
battery in just a few moments and then provide enough power to spin a
car over and start it. And moreover to be able to do this up to 25
times before the stored charged runs out. So say you have a knackered
car battery with a terminal voltage of only 9 or 10 volts, this thing
can draw enough energy out of it to provide 14V at sufficient current
to spin over an engine of over 400CI (that's a typically touted figure
for a normally aspirated petrol/gas engine and about 2/3 that for a
diesel).
It's the energy involved that I'm struggling to get my head around
here. How is this seemingly miraculous tranformation achieved? I've
been wanting to get a jump starter for emergencies for some time, but
was put off by the thought of having a bunch of lithium cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low energy. If it lacks the energy to start the vehicle as a battery,
it's going to take forever to charge the supercapacitor.A fully charged car battery stores megajoules. It takes kilojoules to
Put that device in the same bin as the power factor correction devices for zero electric bills and similar junk.
start a car. So a 99% dead battery still has enough energy to start a
car.
An ohmic load, like an old incandescent lamp, can totally discharge a
battery, but modern loads are electronic, nonlinear, so a modern car
doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most >> >> >> >> such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm >> >> >> >> optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less than 12V to charge it. If the battery is less, you're supposed to go
find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a 'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket adapter which must be disconnected before you start the car.
to approximately 5 volts. I charge with a current of mA till the battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Most chargers won't charge a battery with that low of a terminal voltage, they assume it's a shorted cell.
current limiter. In the beginning I charge with 10 mA or such.
I only charge with a less than 1 Volt over the current battery voltage.
what are you charging, buttoncells ?
tirsdag den 2. januar 2024 kl. 22.06.40 UTC+1 skrev none albert:
In article <bd636389-0a66-4610...@googlegroups.com>,Doom wrote:
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Sunday, December 31, 2023 at 6:08:27 AM UTC-5, none albert wrote:
In article <1151cf17-e9c1-413e...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48 PM UTC-5, John Larkin wrote: >> >> >> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John Larkin wrote:
On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5, Cursitor
dead 12V carThese things claim to be able to charge up from a near
power to spin abattery in just a few moments and then provide enough
up to 25car over and start it. And moreover to be able to do this
a knackeredtimes before the stored charged runs out. So say you have
this thingcar battery with a terminal voltage of only 9 or 10 volts,
sufficient currentcan draw enough energy out of it to provide 14V at
touted figureto spin over an engine of over 400CI (that's a typically
that for afor a normally aspirated petrol/gas engine and about 2/3
head arounddiesel).
It's the energy involved that I'm struggling to get my
achieved? I'vehere. How is this seemingly miraculous tranformation
some time, butbeen wanting to get a jump starter for emergencies for
cells go up inwas put off by the thought of having a bunch of lithium
energy. If it lacks the energy to start the vehicle as a battery,flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low
correction devices for zero electric bills and similar junk.then no amount of transformation is going to increase the energy content.
Put that device in the same bin as the power factor
kilojoules toA fully charged car battery stores megajoules. It takes
works down to 8V. If the battery won't even turn the engine over,start a car. So a 99% dead battery still has enough energy to >start a
car.
An ohmic load, like an old incandescent lamp, can totally >discharge a
battery, but modern loads are electronic, nonlinear, so a modern car
doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most >> >> >> >> such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm >> >> >> >> optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter,
than 12V to charge it. If the battery is less, you're supposed to goit's going to take forever to charge the supercapacitor.
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less
with excessive discharge, it will never fully charge right again.find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a >'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery
adapter which must be disconnected before you start the car.A maintainer prevents that. The maintainer has a lighter socket
battery recoversI have discharged the gel battery of my Ford Mondeo Ghia several times
to approximately 5 volts. I charge with a current of mA till the
voltage, they assume it's a shorted cell.to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Most chargers won't charge a battery with that low of a terminal
I do not use a charger. I use a power supply with regulated voltage and a
current limiter. In the beginning I charge with 10 mA or such.
I only charge with a less than 1 Volt over the current battery voltage.
what are you charging, buttoncells ?
On Tue, 2 Jan 2024 16:43:47 -0800 (PST), Lasse Langwadt Christensen ><langwadt@fonz.dk> wrote:
tirsdag den 2. januar 2024 kl. 22.06.40 UTC+1 skrev none albert:Larkin wrote:
In article <bd636389-0a66-4610...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Sunday, December 31, 2023 at 6:08:27?AM UTC-5, none albert wrote:
In article <1151cf17-e9c1-413e...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48?PM UTC-5, John Larkin wrote: >>> >> >> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John
Cursitor Doom wrote:On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5,
dead 12V carThese things claim to be able to charge up from a near
power to spin abattery in just a few moments and then provide enough
up to 25car over and start it. And moreover to be able to do this
a knackeredtimes before the stored charged runs out. So say you have
volts, this thingcar battery with a terminal voltage of only 9 or 10
sufficient currentcan draw enough energy out of it to provide 14V at
that for ato spin over an engine of over 400CI (that's a typically >touted figure
for a normally aspirated petrol/gas engine and about 2/3
head arounddiesel).
It's the energy involved that I'm struggling to get my
achieved? I'vehere. How is this seemingly miraculous tranformation
some time, butbeen wanting to get a jump starter for emergencies for
cells go up inwas put off by the thought of having a bunch of lithium
energy. If it lacks the energy to start the vehicle as a battery,flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low
correction devices for zero electric bills and similar junk.then no amount of transformation is going to increase the energy >content.
Put that device in the same bin as the power factor
to start aA fully charged car battery stores megajoules. It takes >kilojoules to
start a car. So a 99% dead battery still has enough energy
modern carcar.
An ohmic load, like an old incandescent lamp, can totally >discharge a
battery, but modern loads are electronic, nonlinear, so a
than 12V to charge it. If the battery is less, you're supposed to goit's going to take forever to charge the supercapacitor.doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most
such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm >>> >> >> >> optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, >works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less
with excessive discharge, it will never fully charge right again.find a 12VDC somewhere.
People wouldn't need this if they kept their cars charged with a >'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery
voltage, they assume it's a shorted cell.A maintainer prevents that. The maintainer has a lighter socket >adapter which must be disconnected before you start the car.I have discharged the gel battery of my Ford Mondeo Ghia several times >>> >> to approximately 5 volts. I charge with a current of mA till the >battery recovers
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking
lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Most chargers won't charge a battery with that low of a terminal
I do not use a charger. I use a power supply with regulated voltage and a >>> current limiter. In the beginning I charge with 10 mA or such.
I only charge with a less than 1 Volt over the current battery voltage.
what are you charging, buttoncells ?
50 A-h divided by 10 mA is... what?
How can you charge at 1 volt over the current voltage? Won't that end
the universe or something?
In article <cdcbpipodflrha68pqur8hlu6fnj3v88ar@4ax.com>,
john larkin <jl@650pot.com> wrote:
On Tue, 2 Jan 2024 16:43:47 -0800 (PST), Lasse Langwadt Christensen >><langwadt@fonz.dk> wrote:I charge 10 mA if the current voltage is 5 V. Slowly the voltage creeps
tirsdag den 2. januar 2024 kl. 22.06.40 UTC+1 skrev none albert:Larkin wrote:
In article <bd636389-0a66-4610...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Sunday, December 31, 2023 at 6:08:27?AM UTC-5, none albert wrote:
In article <1151cf17-e9c1-413e...@googlegroups.com>,
Fred Bloggs <bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 3:53:48?PM UTC-5, John Larkin wrote: >>>> >> >> On Sat, 30 Dec 2023 12:23:53 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 2:10:58?PM UTC-5, John
Cursitor Doom wrote:On Sat, 30 Dec 2023 10:08:49 -0800 (PST), Fred Bloggs
<bloggs.fred...@gmail.com> wrote:
On Saturday, December 30, 2023 at 8:20:26?AM UTC-5,
dead 12V carThese things claim to be able to charge up from a near
power to spin abattery in just a few moments and then provide enough
up to 25car over and start it. And moreover to be able to do this
a knackeredtimes before the stored charged runs out. So say you have
volts, this thingcar battery with a terminal voltage of only 9 or 10
head aroundcan draw enough energy out of it to provide 14V at >>sufficient current
to spin over an engine of over 400CI (that's a typically >>touted figure
for a normally aspirated petrol/gas engine and about 2/3 >>that for a
diesel).
It's the energy involved that I'm struggling to get my
some time, buthere. How is this seemingly miraculous tranformation >>achieved? I've
been wanting to get a jump starter for emergencies for
correction devices for zero electric bills and similar junk.then no amount of transformation is going to increase the energy >>content.was put off by the thought of having a bunch of lithium >>cells go up in
flames on me. This would seem to eliminate that risk.
Low battery cell voltage means low stored charge and low >>energy. If it lacks the energy to start the vehicle as a battery,
Put that device in the same bin as the power factor
to start aA fully charged car battery stores megajoules. It takes >>kilojoules to
start a car. So a 99% dead battery still has enough energy
than 12V to charge it. If the battery is less, you're supposed to goit's going to take forever to charge the supercapacitor.car.
An ohmic load, like an old incandescent lamp, can totally >>discharge a
battery, but modern loads are electronic, nonlinear, so a >>modern car
doesn't fully discharge a battery any time soon.
Of course, the supercap charger specs are probably as bogus as most
such stuff, but they seem to work.
I have a lithium battery starter which I charge occasionally. I'm >>>> >> >> >> optimistic it won't start my car on fire.
I'm pretty sure SAE spec is everything, including the starter, >>works down to 8V. If the battery won't even turn the engine over,
Sounds like 10 minutes is typical.
That Autowit thing on Amazon says the battery has to be no less
what are you charging, buttoncells ?I do not use a charger. I use a power supply with regulated voltage and a >>>> current limiter. In the beginning I charge with 10 mA or such.find a 12VDC somewhere.I have discharged the gel battery of my Ford Mondeo Ghia several times >>>> >> to approximately 5 volts. I charge with a current of mA till the >>battery recovers
People wouldn't need this if they kept their cars charged with a >>'battery maintainer.' They're just an unregulated 12V PV straight
into the battery, nothing else. Once they've ruined their battery >>with excessive discharge, it will never fully charge right again.
A maintainer prevents that. The maintainer has a lighter socket >>adapter which must be disconnected before you start the car.
to 10 Volt than increase slowly the current. The garage advises to
change the battery, but I can till start the motor with it.
It is from 2000, so if an interior light is left on, or the parking >>>> >> lights, it is severely discharged.
It makes no sense to replace the battery, I make this mistake
at least once a year.
Conclusion the battery is not ruined, at least not totally.
Most chargers won't charge a battery with that low of a terminal >>voltage, they assume it's a shorted cell.
I only charge with a less than 1 Volt over the current battery voltage. >>>
50 A-h divided by 10 mA is... what?
How can you charge at 1 volt over the current voltage? Won't that end
the universe or something?
up. For example at 8 V I risk charging with 100 mA. At the end the
battery is functional, i.e. I can start the car with it.
Groetjes Albert
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