probably could be done with a diode and resistor (1k to 10k) to the +5v supply.  
neither
nickel cadmium nor NimH like to be overcharged however and this will definitely damage 
it
eventually.  also, nicads do self discharge fairly quickly, usually within 1 month.  a
better idea would be to just use 3 alkaline double or triple "a" batteries in series, 
or
if you can find a "gold cap" use that with the resistor and diode scheme to charge it. 
 or
ask the swap list, batteries can be had for $2+, i've even seen new ones in that price
range.  or $4-5 at radio shaft.  remember, if you overcharge the batteries, they will
eventually leak and damage things.

Henry Lintiaco wrote:
> 
> Hello:
> 
> due to limited budget, I will try to use the 3.6V
> battery (Nickel Cadmium or NimH) designed for cordless
> phone to my PPC 6100/66 as PRAM batt. I will
> connect/solder the 2 wires + - respectively.  Problem
> is, this battery needs recharging, how can I charge it
> on its first use? Do any of you guys tried to do this?
>  thanks
> 
> Henri
--------

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like a
bee.  I guess there is truth in advertising after all...

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