Originally Posted by spock123
I have 4 6 volt batteries in my camper but the are the cheapest batteries the dealer could find. I think there are 105amp hour. I am going to replace the four with four Trojans, do you think it would pay the difference between T-105 or the higher ones. The T-105 has 225amp hr and the T-125 is 240amp hr and the T-145 is 260amp hr.
The difference for each upgrade is 15 - 20 useable AH. If you are really frugal, you can get by on 20AH per day, which gains you another day without recharging. More typical use is 30+AH/day, in which case you would gain a full day only if you went up to the T-145 compared to the T-105.
Key to the decision is a good, realistic estimate for AH used per day, and your plan for recharging.
2014 Rockwood A122 A-frame
Two 6V 232AH batteries from Costco
Sized to run 4 nights (extended weekend) with heater (4 amps) on max 5hrs/day. LED interior lights, fridge is continuous run propane (no control board). Recharging to be done by plugging in at home or at next campground.