I'll be going away on holiday to somewhere that has continental-type
mains sockets with two round pins. I have a suitable adapter plug
thingy that provides two USB outlets, one rated at 5 volts and the
other at 1 volt. My smartphone spec says that it has a 3.7 volt
battery. Would I risk damaging the battery if I used the 5v outlet? If
I can't safely use the 5v outlet, will the 1v outlet actually be able
to charge the battery? (If so, I assume it will take a rather long time
to do so.)
TIA.
The outlets are
actually labelled 2.1A and 1A. So which of those should I use?
Oops! My apologies. I don't know where I got the 5v and 1v from. The
outlets are actually labelled 2.1A and 1A. So which of those should I
use?
Either will work without harming the phone, but the 2.1A ought to do the
job faster.
On 18/05/2022 10:06, John Hall wrote:
Oops! My apologies. I don't know where I got the 5v and 1v from. The
outlets are actually labelled 2.1A and 1A. So which of those should I
use?
And with any charger, never leave it unattended.
You see lots from the greenies about chargers costing a few pence a
year when left running all the time but there is a fire danger from
anything like that is left unattended,
What's the actual real life risk, compared with (for instance), the
control board in your boiler, the clock on your oven, your PVR in
standby, your masthead amp PSU, your bedside clock-radio, or even your
mains powered smoke alarm ?
On 18/05/2022 15:20, Mark Carver wrote:
What's the actual real life risk, compared with (for instance), the
control board in your boiler, the clock on your oven, your PVR in
standby, your masthead amp PSU, your bedside clock-radio, or even your
mains powered smoke alarm ?
It is usually the cheap and nasty wallwarts that are the cause and not
all those use one but you regularly see reports of fires caused by a
phone on charge.
Just seems a simple precaution to not leave a cheap charger, costing
pennies and not made or supplied by the phone manufacturer, charging unattended. Quite likely does not do the batteries any good either
(however clever they claim the charger is).
On 18/05/2022 10:06, John Hall wrote:
Oops! My apologies. I don't know where I got the 5v and 1v from. The
outlets are actually labelled 2.1A and 1A. So which of those should I
use?
And with any charger, never leave it unattended.
You see lots from the greenies about chargers costing a few pence a
year when left running all the time but there is a fire danger from
anything like that is left unattended,
On 18/05/2022 10:06, John Hall wrote:
The outlets are actually labelled 2.1A and 1A. So which of those
should I use?
Either will work without harming the phone, but the 2.1A ought to do
the job faster.
On 18/05/2022 15:20, Mark Carver wrote:
What's the actual real life risk, compared with (for instance), the
control board in your boiler, the clock on your oven, your PVR in
standby, your masthead amp PSU, your bedside clock-radio, or even your mains powered smoke alarm ?
It is usually the cheap and nasty wallwarts that are the cause and not
all those use one but you regularly see reports of fires caused by a
phone on charge.
Just seems a simple precaution to not leave a cheap charger, costing
pennies and not made or supplied by the phone manufacturer, charging unattended. Quite likely does not do the batteries any good either
(however clever they claim the charger is).
I'll be going away on holiday to somewhere that has continental-type
mains sockets with two round pins. I have a suitable adapter plug thingy
that provides two USB outlets, one rated at 5 volts and the other at 1
volt. My smartphone spec says that it has a 3.7 volt battery. Would I
risk damaging the battery if I used the 5v outlet? If I can't safely use
the 5v outlet, will the 1v outlet actually be able to charge the
battery? (If so, I assume it will take a rather long time to do so.)
been turfed out of a hotel at about 4 in the morning ( very frosty morning, too) because one of those caught fire.
John Hall <john_nospam@jhall.co.uk> wrote:
I'll be going away on holiday to somewhere that has continental-typeI think you are a little confused.
mains sockets with two round pins. I have a suitable adapter plug thingy
that provides two USB outlets, one rated at 5 volts and the other at 1
volt. My smartphone spec says that it has a 3.7 volt battery. Would I
risk damaging the battery if I used the 5v outlet? If I can't safely use
the 5v outlet, will the 1v outlet actually be able to charge the
battery? (If so, I assume it will take a rather long time to do so.)
*All* USB outlets should provide 5 volts and have a minimum current >capability of 500mA. Your phone is expecting to get 5 volts. It has >electronic circuitry that charges the 3.7 volt battery from the 5 volt >supply.
I know of no USB 'outlet' that provides only 1 volt, I think you must
be misreading something. On twin outlets like you seem to have it's
quite common for one to be able to provide (up to) 2.1 amps and the
other (up to) 1 amp. Is that where you're getting the '1' from maybe. >Anyway, both outlets will be 5 volts and the 2.1 amp one *may* charge
your phone a bit more quickly than the 1 amp one, it depends on how
the phone and the 'charger' interact.
I'm from the generation that doesn't leave anything electrical switched
on unnecessarily.
Anything that does need to be left switched on will be fed through a RCD
just to give a bit of protection.
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