On 2013-06-29 11:56 PM, RussellMc wrote:
>> LiFePO4 is one of the easiest types of batteries to charge. As long as
>> you're not nearing the upper voltage limit, you can float it at ~3.5V
>> indefinitely.
>
> You may be correct, and that voltage is consistent with some other
> information that I have, but I'd be interested on any technical
> information you have about what voltage LiFePO4 can be floated at long
> term.
>
> Where did you get that figure from?.

Mostly from largely un-scientific personal experience and testing. There
seems to be close to zero current flow into the battery when I floated
it at 3.4 - 3.5V. The little that there was, I assume is due to self
discharge and temperature differences.

I picked the number based on information from various data sheets from
LiFePO4 manufacturers. 3.4V or lower is a much safer voltage to float
at, but obviously at the cost of reduced total stored energy. I'll see
if I can find some data sheets and send them to you.

Does anyone know of a reputable LiFePO4 battery seller? I don't mind
buying a bunch and making my own pack.
--=20
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