Re: Slightly OT: Recharging Mobile batteries


"Neil" <NeilKurzm@xxxxxxxxxxxxxxxx> wrote in message
news:YqDug.403924$Fs1.400679@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hans-Bernhard Broeker wrote:
tim <tim_not_at_home2006@xxxxxxxxxxx> wrote:

Can I recharge the battery by just connecting the terminals
on the charger plug to the terminals on the battery, for an
hour or so, or is something more complicated than this
required?

Quite impossible to tell. For starters, it depends *heavily* on what
phone that is. Somewhere in the chain between the mains power and the
accumulator cells, there *must* be an accumulator charge/discharge
control circuit. As long as you don't reveal the model of that phone,
it's anyone's guess where that circuit might be. It could be in the
battery itself, or in the phone, or (possible, but much less likely)
it could even be in the charger.

You'll most likely find that the number of terminals on the battery
isn't even the same as the number of pins on the charger's connector,
and that's before we start considering unknown polarities and
pin-to-pin mappings.


It is worse than that. If the battery is charged at to high a voltage it
can fail

This is no big deal. The phone doesn't work with it and it has
no other use.

or catch on fire. It depends on where the charge controller is. Li-Ion are
not toys. Find a different phone.

I have a diferent phone. But I need to make the old one
work so that I can copy my phonebook to the sim
(never having lost a Phone like this before it's not
something that I considered necessary in normal use)

Or use a voltage regulated current limited power supply.

To charge the battery or operate the phone?

Tim


.

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