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Battery runtime
How long a battery bank, UPS or power station runs a load, allowing for usable depth of discharge and inverter losses.
5 h 46 min
Estimated runtime
1,200 Wh
Battery energy
864 Wh
Usable energy delivered
5.76
Runtime in hours
How it's calculated
- Runtime = Ah × V × usable depth of discharge × efficiency ÷ load in watts.
- Lead-acid batteries give less than their rated capacity at high discharge rates (Peukert effect). This calculator ignores that, so treat the result as optimistic for heavy loads on lead-acid.
- Cold reduces capacity. Below about 0 °C, lithium cells should not be charged at all.