UPS runtime calculator
How long a battery backup carries a load.
UPS runtime calculator
How long a battery backup carries a load.
1 h 17 min
Runtime
2 h 33 min
At half the load
A UPS is rated in VA, and its battery in amp-hours: watt-hours are volts times amp-hours (a 12 V 7 Ah battery is 84 Wh). Real runtime is shorter as the battery ages.
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