Re: 30 AMP MPPT Charge Controller?
I have to ask what charge controller that is.
A couple of things about those specs bug me. For one, if it thinks a 12 Volt deep cycle is fully charged at 13.7 it's wrong. Two, the input Voltage maximums seem extremely limited. Three, over-Voltage protection on the output of a charge controller? It should have charge set-point limits.
As a general rule, the array Wattage is equal to the maximum output current * nominal system Voltage plus a little room to allow for variation in panel output (usually 20%).
As in: 12 Volts * 30 Amps = 360 Watts / 0.8 = 450 Watts. The other system Voltages would follow on those lines: 24 Volt @ 900 Watts, 48 Volt @ 1800 Watts.
Good quality name-brand charge controllers will tell you specifically in their manual what their maximum recommended array size is for any given output Voltage.
Four 175 Watt panels, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.
Ohm's Law: Amps = Volts / Ohms
Power Formula: Watts = Volts * Amps