Li-ion pack all have a protective pcb. out put pins
are three pins, positive - TH - negative. TH is a NTC,
till now I only see NTC being connected between TH and negative.

Li-ion pack is much easier to recharge, only two stage
constant I and constant V. Lots info from net.

Also, any standalone Li-ion charger will do the job



----- Original Message -----
From: "Dimitrios Kapousouz" <dkapousouz@gmail.com>
To: <piclist@mit.edu>
Sent: Thursday, April 27, 2006 5:31 PM
Subject: [EE]: Li-on batteries & charging


> Hello
>
> I have some spare Li-on batteries from some mobile phones i used in the
> past. Yesterday i was thinking about using some of them as a power supply
to
> some small devices. My problem is i don't know exactly the functionality
of
> the pins. I find 2 GND pins 1 Vdd pin and an other pin in some batteries
> without any sign, in others called "T". What is this "T"? Also is charging
> of Li-on batteries the same way as Ni-Cd?
>
> Thanx
>
> PS: I remember some time ago talking about a good program that is useful
> while debugging (with MCUs & the RS-232 port) . Can anyone help me
remember
> the name? thanx
> --
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