UPS Calculator

Calculate UPS backup time, battery requirements, and sizing for uninterruptible power supply systems.

UPS Parameters

Total Load (Watts)

Battery Voltage (V)

Battery Capacity (Ah)

Number of Batteries

Inverter Efficiency (%)

Power Factor

244.8

Minutes

(4.08 hours)

Required VA Rating625 VA

Recommended VA (20% headroom)750 VA

Real Power500 W

Total Battery Energy2400 Wh

Usable Energy2040 Wh

Battery Current Draw49.02 A

Discharge Rate (C-rate)0.49C

Min Capacity for 30min24.5 Ah