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To determine the approximate power drain on your battery you will want to estimate the reserve power (amp/hour) of the battery, and the amps the inverter will require, to meet the continuous load demands of the appliance.

Battery Capacity

choose your battery voltage and

enter amps/hrs of your battery and wattage of your appliance.

battery

amp/hrs

total hrs

  

or

  

   wattage

total min: