Data Center Electrical Calculator
UPS Battery Runtime / Autonomy Calculator
Estimate UPS battery backup runtime from Ah, bank voltage, depth of discharge and inverter efficiency, plus the reverse calculation for a target backup time.
Design Inputs
Results
Runtime at This Battery Bank
52 min (0.86 h)
Battery Capacity Needed for 15 min Backup
28.9 Ah
Simple energy-balance estimate (Ah × V × DoD × efficiency ÷ load). Ignores the Peukert effect (capacity drops at higher discharge rates) and battery aging/temperature derating — for a final design, size against the manufacturer's discharge-rate table at the site's design temperature.
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