the AH meter reads the amps into the battery, this is the actual charge being replaced
battery temperture affects the speed of the chemical reaction that takes place during discharge or charge
charging creates heat, heat can lead to release of too much hydrogen and explosion and fire, but it is not a controlling factor in charging except that in cold temps the battery can take higher amp flow with out getting too hot
the trouble with KAW is are reading total input power for all loads
the charge watts, plus any loads that are on, lights, pump, anything using DC power from the battery charge circuit
converters are not 100% efficent, but in most cases its not converter efficeny we worry about, if we use 60 AH from the battery bank, we want to but back 60 AH into the bank, if it takes 70 AH measured on the meter at the batteries
then the other 10 AH is the power used and heat created in the conversion back to stored chemical energy
its about knowing what it takes in DC input power applied "at the batteries" to do the recharge
not how much AC power is used
if the batteries are cold and weather is cold the chemical reactions are slower
but higher voltage can be safely used
if its hot weather, lower voltage is needed so as to NOT damage the batteries
but battery temp is used as a "control/speed" factor not AMOUNT factor, except to say DONT exceed this amount/speed or you are in dangerous territory
i hope i explained this correctly
