3 tons wrote:
The capacity of your two GC 6v’s (connected in series to form one large battery) should be 215 amp/hrs because the amps are divided by two when the voltage is doubled...Versus the 85 or so amp/hrs of your previous group 24...And if you consider that your usable amp/hrs for most wet-cells is to about 50% of capacity (without causing long term damage), you gained about 65 amp/hrs additional capacity...
You just flunked composition. You are confused. NOTE you are not wrong. exactly. but confused.
You said the capacity of the two GC-2 in series is 215. Well I usually say 220 give or take (Mine are 230) but that is correct you then said "Because the amps are divided by two when the voltage doubles) and this is nonsense. THe AMP-HOURS of a matched pair of batteries in series are the same as the AMP-HOURS of the individual batteries they do not change. they do not divide. VOLTAGE doubles. That is all.
Now if you are talking about how much it takes to make say 20 watts. Then you got it right. but we are not talking watts (Which by the way the watt-capacity of a pair of matched batteries in series. like the voltage. doubles).
Someone up-thread said "Think of them as a big 12 volt battery" (to be specific a 4D is about right). I've been flamed for saying that but it is TRUE. two six volt in series are one big 12 volt electrically.
The only difference between his post and mine is I'd suggest a 60 amp converter.. Minor difference. Progressive Dynamics 9260 for a stand alone or 4660 if upgrading an integrated unit (Converter is part of breaker/fuse box/panel).
