Electrical power/ CALCULATOR

Battery runtime from a steady load

Estimate ideal runtime from nominal energy, usable fraction, inverter efficiency and load.

Nominal battery capacitykWhUse the rated energy capacity of the battery bank.

Planned usable capacity%Keep the intended reserve outside this fraction.

Steady AC loadWAverage load during the runtime period.

Conversion efficiency%Combined delivery efficiency for this estimate.

Energy delivered to load

7.20 kWh

Ideal runtime

14.40 h

Constant load and efficiency with the stated usable fraction. Temperature, ageing, standby consumption, peaks, battery-management cutoffs and capacity-rate effects are excluded.

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