Take a look here for lots of good info on batteries.



http://www.phrannie.org/battery.html







As far as batteries go Golf cart batteries come out on top for power delivered. But they are heavy and large. I would not store them in a basement, charging lead acid batteries generates hydrogen gas (can you say Hindenburg?)

They make special caps that greatly reduce this venting, but hydrogen is some nasty stuff to have floating around in your home so I would not trust them. Do you have a gas or propane water heater? If so it’s even more dangerous to have batteries in a basement.

AGM batteries are the best for use if you are going to store them inside your home, but they are expensive and have to have a special charger (expensive) made for them so you don’t over charge them or charge them at too high of an amperage.