Power output is: amps x volts = watts
If your charger is pushing 10amp at 12 volt: 12 x 10 = 120 watts. 2 banks = 240 watts.
240 watts / 120v at your outlet = 2 amp.
Efficiency isn't 100% so it's gonna be more than 2 amp on your garage circuit, but maybe like 2.4 amps.
I think.... It's been a while, LOL. Either way 20amps output on a charger for a 12v battery isn't the same as pulling 20amps off your garage circuit.
Recommended Posts