Do you already have a solar system?
I don't think that you will require as large of battery capacity after installing a solar system, because in part the 35 AH that you use daily to run just the CO meter, propane leak detector, and refrigerator will be in part supplied directly from the sun, not the battery.
I used a 85 pound 12 volt battery in a personal lift at my work. It came with a group 31 battery at around 50 pounds, but was replaced with a L5 battery (I think - it was over 15 years ago). That battery lasted a long time. IT was a 1 person manlift that went straight up, no drive motor, just up and gravity down. All aluminum, it was pretty light.
Good luck finding new batteries. Trojan is a good brand. They make many 12 volt batteries. I sometime wonder if the 'HC' version of the 12 volt group 27 battery is good or not. To get the higher capacity, did they install larger plates with less room below the bottom of the plates to accumulate junk - before the junk shorts out one of the cells?
I have heard that the T-105 and T-125 have the same case, yet the T-125 weight is about 8 pounds more. They both are rated at 75 amps for 105 or 125 minutes respectively (in the name). The T-125 has about 250 AH. Yet I guess that it might have larger plates that allow less 'junk' below them, leading to a reported shorter battery life.
Fred.
