Originally Posted by T37Chef
Can I get absolute clarification please...
2 each Group GC2 6V batteries would equal 215 Amp hours, or about 105 usable a/h?
You do not get 215 a/h out of each.
...so technically (and I hope this isn't more confusing) yes you get 215 a/h out of each - its just you need two of them providing current simultaneously to get 12V. Net result, yes, two 6V 215ah batteries combined give you the same as a single 12V 215ah.