How to choose bat­tery size

Consumer Voice - - Inverters -

Bat­ter­ies are avail­able in var­i­ous am­pere-hour ca­pac­i­ties. You need to first de­cide how much backup you re­quire. Here is the for­mula to cal­cu­late the backup: Load/Volt­age x backup hours = am­peres For ex­am­ple, 542 watts/12V x 3 hours= 135Ah

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