allen8106 wrote:
Batteries are considered discharged at 11.6 volts. If you are taking them down to 10 you are damaging them.
I believe that is resting. BCI reserve capacity (RC) is 25 amp draw to 10.5 volts and I believe this is the common voltage under load to designate 100% discharged.
Mostly semantics. Ether 11.6 or 10.5 is too low to get decent life out of a battery.
Now that I think about RC rating in minutes.... OP could probably use that as a guide as the draw is similar. Just cut the RC minutes in half to get to 50%. Trojan group 27 has 175 minutes so 1.5 hours could be real close.
