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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.
Wanderer, thank you. I did look at the breakers for my garage/outside outlets and they are 20 amp. I reached out to the company that makes dual pro chargers with the question and this is the reply I received.:
Thank you for reaching out to us here at PCS. The Sportsman series charger, although rated ay 10 amps per bank, draws only 5 amps from AC when all banks are charging. As the Professional series which provides 15 amps per bank, has a maximum AC draw of 7.5 amps with all banks charging.
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