Hello all,
I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!
They are used for a security door/window sensors that transmits a
319.5MHz signals to a receiver as to the condition open/close.
Therefore the actual load is small since the batteries last a number of >years.
What I am asking is what would be an appropriate resistive load to place
on the battery briefly while checking the voltage with my Fluke 111 >Multi-meter?? 10 ohms-1000 ohms-10000 ohms or something different??.
I know this may not be a 100% perfect true or proper load test but
I just want to be in a good range.
I also know that it would be better to do a current test for amps but
I just thought a quick load voltage test for a few seconds would work.
Thanks in advance for any and all hints.
Les
On Thu, 14 Apr 2022 07:13:55 +0100, Charlie+ <charlie@xxx.net> wrote as >underneath :
snip
Sorry about the top post in error! C+
Hello all,
I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!
They are used for a security door/window sensors that transmits a
319.5MHz signals to a receiver as to the condition open/close.
Therefore the actual load is small since the batteries last a number of years.
What I am asking is what would be an appropriate resistive load to place
on the battery briefly while checking the voltage with my Fluke 111 Multi-meter?? 10 ohms-1000 ohms-10000 ohms or something different??.
I know this may not be a 100% perfect true or proper load test but
I just want to be in a good range.
I also know that it would be better to do a current test for amps but
I just thought a quick load voltage test for a few seconds would work.
Thanks in advance for any and all hints.
Les
The ones we used were made in Israel.. We just changed them all out when one got weak, and they were *very* predictable. Since the sensors are monitored and report in to the control even when not activated, they are always under a slight draw in thesensor even when not actually transmitting. The ones that are on pass doors of course fail first. When we got a battery error from central station for a sensor, we would replace all the sensor batteries at one shot for customers with a maintenance
I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!
ABLE1
=========
I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
** Same as a Li button cell, but bigger.
You need an ESR meter ( ie the Bob Parker one) to test these
- as the cell discharges or ages the reading increases by many times.
I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!
** Errr .... SAFT is a French company.
...... Phil
I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
** Same as a Li button cell, but bigger.
You need an ESR meter ( ie the Bob Parker one) to test these
- as the cell discharges or ages the reading increases by many times.
I understand there is something special about these particular batteries >> but I do not know what exactly.... other than they are made in France!!
** Errr .... SAFT is a French company.
However, I am trying to avoid buying another testing meter
just to check a few batteries.
I was thinking that if I
could just add a small load I could see the difference between
a NEW and USED battery just to get a ratio or just a hint!!
Now, I can just go with a 10k resistor and see what happens but
maybe that is too much or not enough. Which is why I decided to ask.
Hello all,
I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
On Wednesday, April 13, 2022 at 3:41:45 PM UTC-7, ABLE1 wrote:
Hello all,
I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
It's a 3.6V lithium battery; typical drain (if it's lasting years) is 35 microamperes,
and you can put a few hundred microamperes of load on it, so... use
a voltmeter with a 10k ohm resistor in parallel, that'll suck about 300 uA.
Try it on some just-died batteries to see what is 'no good' level, and... take notes,
it could be a year from now when you need to check 'em again. Expect 3.0V when dead.
One generation of Mac computers used such a battery: the clocks died at almost
exactly 3 years. When I put a meter on the current draw, it measured exactly the
load that (according to manufacturer ratings) would drain 'em at three years. I mean,
about 1% accuracy. I did NOT expect that.
However, I am trying to avoid buying another testing meter
just to check a few batteries.
I was thinking that if I
could just add a small load I could see the difference between
a NEW and USED battery just to get a ratio or just a hint!!
** So now you tell us you have a new one ?
Gee Whiz Phil!! But I did!!
** Try a 100ohm resistor - if you have one.
Asking us how to do tricky testing with the WRONG meter is pain dumb.
This dumb guy is just trying a small dumb experiment!!
ABLE1
======
However, I am trying to avoid buying another testing meterI have a number of batteries that I would like to put apply small load >>>> to check the voltage. Hopefully it will give me an idea of the capacity >>>> that would be in the battery versus a new battery.
The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
** Same as a Li button cell, but bigger.
You need an ESR meter ( ie the Bob Parker one) to test these
- as the cell discharges or ages the reading increases by many times.
I understand there is something special about these particular batteries >>>> but I do not know what exactly.... other than they are made in France!! >>>** Errr .... SAFT is a French company.
just to check a few batteries.
** Having suitable test gear is not optional.
I was thinking that if I
could just add a small load I could see the difference between
a NEW and USED battery just to get a ratio or just a hint!!
** So now you tell us you have a new one ?
Now, I can just go with a 10k resistor and see what happens but
maybe that is too much or not enough. Which is why I decided to ask.
** Try a 100ohm resistor - if you have one.
Asking us how to do tricky testing with the WRONG meter is pain dumb.
..... Phil
ABLE1 is Stupid LIAR
==================
** Having suitable test gear is not optional.
=================================
** So now you tell us you have a new one ?
** Nope - you did NOT.
The above does not say that *at all*.
See my ? It was a question.
Asking us how to do tricky testing with the WRONG meter is pain dumb.
** When you don't need help or advice.
Don't ask here for it.
Fuckwit.
..... Phil
** Having suitable test gear is not optional. =================================
** So now you tell us you have a new one ?
** Nope - you did NOT.
Asking us how to do tricky testing with the WRONG meter is pain dumb.
** When you don't need help or advice.
Don't ask here for it.
Fuckwit.
Well I came here to ask an On Topic question and I get all of that??
Never mind, I got the small hint I was looking for.
Trust the Drongo from down-under to come in late with badly explained (but possibly accurate) suggestions, go vulgar when questioned, and have the last words (also vulgar).
Not sure if they have Twinkies in Australia (or if it can afford them), but Drongo clearly lives on the functional equivalent.
Peter Wieck
Melrose Park, PA
https://www.hostesscakes.com/products/twinkies/classic/
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