My existing house "bank" is a single 12-volt, which I'm guessing was around 85 ah when new. Now, it's about 5 ah.
I'm considering 4 Trojan T-105 6 volt batteries. Wired in series parallel, they'll give me 450 ah at 12 volts. $512.00 and 248 lbs. total.
I'm also considering 3 Trojan...