stand alone battery

ws9876
ws9876 Solar Expert Posts: 450 ✭✭✭
in Off Grid Solar & Battery Systems #1
If you were going to buy one 12v battery for power outages(charged by an AC battery charger) in the 300 amp range, which one would you pick...either one 12 or 2 six volts...considering long lastability and price.
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  • icarus
    icarus Solar Expert Posts: 5,436 ✭✭✭✭
    #2
    Re: stand alone battery

    I think you are going to have trouble finding a 12 volt that big. A pair of T105s wired in series would out out ~225 ah. You could bump up to the T-145 series for ~260 ah. The advantge of the T105s is that they are available nearly anywhere, certainly pretty cheap, Costco, Sam's Club, CT a golf cart shop.

    Pretty hard to go wrong, IMHO,

    Tny
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  • YehoshuaAgapao
    YehoshuaAgapao Solar Expert Posts: 280 ✭✭
    #3
    Re: stand alone battery

    The biggest 12V battery you can get that is a standard non-industrial size and at least somewhat common is Group 8D, about 250Ah. Group 31 is more economical, about 130Ah. For 6V, L16 is about 400Ah while GC2/T-105 are more economical, about 225Ah. GC-2 definitely the most common.

    Beware of many AC chargers, especially of the automotive type.
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