UPS - Battery Runtime

UPS battery runtime from battery Ah, system efficiency, and load - standard redundancy check for critical-load continuity.

UPSBatteryRuntime

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

t = \frac{Ah \cdot V \cdot \eta}{P_{load}} \cdot 60

Symbol	Meaning	Unit
$Ah$	Battery capacity	Ah
$η$	System efficiency

Source: IEEE 1188 / IEC 62040

UPS battery runtime from battery Ah, system efficiency, and load - standard redundancy check for critical-load continuity.