Battery Runtime Calculator

Complete the following input data to calculate runtime based on load and known battery rating.

The Battery Size selector table provides part numbers for several popular battery sizes from different manufacturers. Runtime is based on published manufacturer data. Using batteries of similar rating from other manufacturers should provide similar results.

Kw Load:   

Inv Eff %:   

Number Of Batt In String:          

Number Of Parallel Batt Strings:

Battery Size:  

Battery Runtime = 

Battery Power =       Watts Per Battery

Battery Power =       Watts Per Cell

Battery Current =    Amps

*Battery runtime calculation assumes 1.67 volts/cell cutoff
*Actual battery performance may vary from calculated values due to age and condition of the battery, operating temperature and other factors