With 4 12v golf cart batteries we've powered two inverters. One is a 1200 w for a power strip in bedroom and apt fridge in basement. Lasted quite well. So we then added a 3000w pure sine which really used more power. We ran a 25' heavy duty construction cord to plug into rv 50a with a 15a adapter to power all outlets, tv, satellite and kitchen appliances. For that we had mutliple 'human errors' by forgetting to turn off battery charge function when on inverter AND forgetting to turn it ON when back on shore power or generator. next plan is installing Lithium batteries and Victron solar sys.
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