Trojan T-105 versus T-1275
I'm considering using a pair of T-1275 instead of T-105 to gain some additional amp-hour capacity. Should I expect either of these choices to last for about the same number of 50% discharge/charge cyc...
Forum Discussion
pauldub wrote:
I'm considering using a pair of T-1275 instead of T-105 to gain some additional amp-hour capacity. Should I expect either of these choices to last for about the same number of 50% discharge/charge cycles? Also, it seems that a pair the 12v in parallel with likely have half internal resistance than a pair of 6v in series. I'm guessing the pair of 12v would do better running an inverter with a 1000 watt load.
To the first question: Number of charge/discharge cycles.. YES
To the second Internal resistance, NO
FOr any given type of battery the internal resistance of a new battery will be dependent on the battery system amp hours.
So if you put say 2 pair of GC-2 220 amp hour batteries (giving you a total package of 440 amp hours) you will have a specific internal resistance.
You do the same thing by paralleling 12 volt batteries, you will have nearly the identical internal resistance.
