useable amp hours

[Bigeddie58]

I have recently installed 2 trojan t-105 batteries. Battery rated at 225 amp hour. Will my useable hours be 110 amp hours or 225 amp hours? Thanks!!!!!!

[GMFL]

110AH or 50% of your total AH

Two 6 volts wired in series increases voltage to 12 volts but AH stay the same.
Two 12 volts wired in parallel increases AH but voltage stays the same.

[Bill M.]

The usable will be 110, as he said. Minus the amount you lack in getting them fully charged each time. If running a generator or solar that could be a good bit.