[RE-wrenches] Battery at temp

[jay peltz]

Hi Hugh,

The other thing to consider with heat is that higher temperatures while increasing capacity also decrease life ( more active chemical reactions, and conversely lower temps increase battery life.

jay

peltz power
On Apr 24, 2011, at 12:19 AM, Hugh wrote:

> So maybe we should be heating our batteries up to get more energy/capacity out of them :-)  Better tell Roy's customer to turn off his AC.
> 
> I did read a serious design document that told me I should heat battery compartments to 25 degrees C in order to maximise performance but I decided not to do that in my arrogant way.  I decided I knew better how to design an efficient battery system than the experts who wrote this particular standard.  That was around the time I decided to give up adhering to standards and being an accredited installer.
> 
>> 
>> 
>> "The normal operation temp is 77-80°F. Lower than normal temps. will reduce capacity, slightly extend life, require a higher recharge voltage, & cause SG readings to be adjusted down. HIGHER TEMPS HAVE THE OPPOSITE EFFECT".
> 
> 
> -- 
> Hugh Piggott
> 
> Scoraig
> http://www.scoraigwind.co.uk
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