Date: Sat, 29 Sep 2001 14:13:03 -0500
From: David VanHorn <[EMAIL PROTECTED]>
Subject: Re: Homebrew battery packs


>
>I think NICAD batteries need something more complex than just a power source
>to finish charging... NICAD rechargers are cheap, and the capacity of D
>cells are very good...

And batteries plus will weld up a custom pack at quite a reasonable price.

Nicads need a constant current source.
If you want to charge quickly, you need to watch the pack voltage, and 
terminate fast charge when the voltage curve flattens out.
Then you go to slow charge, but even then, you can't let that run forever, 
or you get into voltage depression.


--
Dave's Engineering Page: http://www.dvanhorn.org

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