mordecai81 wrote:
I have one USBattery 12v 155 a/hr battery. We mostly boondock, have 435 watts of roof solar, 120 watts of portable, no inverter, and use between 55 to 95 amps in a 24 hr period. I charge all day at least somewhat with the solar(dependent on shade and conditions) and supplement when necessary with generator and stand-alone 60 amp charger. I have never felt I needed more battery(s). If our routine didn't include daily charging we would have to rethink our bank, of course.
Even just a single pair of golf cart batteries would give you a nice boost in case you get a cloudy day. I'm running 4 of them, but I've found so far that they're overkill. On my last two trips, I've only used 80-100 ah per day (and I have 430 of capacity).