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[DPRG] battery dilemma

Subject: [DPRG] battery dilemma
From: Derek Engelhaupt tankme at gmail.com
Date: Sat Nov 8 21:28:29 CST 2008


Check those out...


On Sat, Nov 8, 2008 at 9:06 PM, Chris J. Kiick <ckiick at austin.rr.com> wrote:
> Hi,
>    My old (old) rechargeable 6v batteries can no longer be fully charged.
>  They will no longer hold more than 3.5V.
>        Now, I have some really nice Li-ion batteries that I'd like to use.
> They are rated as 3.6v each.  I figured that putting 2 in series
> would give me about 7v, not too much over the expected 6v power
> requirements.  However, when charged each battery reads just over 4v
> each.  8v is too much for the circuits to handle.
>        Anyone know of a fairly simple way to connect a pair of 4v
> batteries so that I get 6v?  Keeping in mind that the voltage is going
> to be lower as the batteries are discharged.
> Thanks,
> --
> PS: see you at Roborama.
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