I need a battery bank to power a mini fridge 1.3 amps @ 120v for 48 hours and a electric blanket 200 watts @120v 8 hours as well as computer and cell phone charging, how many Ah will I need?
Plug in what you want to run and put a kill-a-watt meter in series with the shore power cord. Measure the total consumption for 3 days. Double that number and add 10% for inverter inefficiency to calculate battery capacity.
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