Hmm, have you considered Ohm's law? Warmer batteries have lower internal resistance. For a given voltage, lower resistance means more current (and vice versa)
Chuck Hursch wrote: >Hello All, > >I'm not understanding why a warmer (Pb-acid) battery takes more >current to produce a given voltage under charge than a cooler >battery. Seems that lead-acid batteries are supposed to be more >efficient (less internal resistance) when warm than cold. So I >would expect the opposite of what occurs. Any explanation? > >Thanks, >Chuck Hursch >Larkspur, CA >www.geocities.com/nbeaa > 1979 > > >
