Battery / UPS Sizing Calculator
Determine the battery Ah rating needed to power your loads for the required backup time. Covers lead-acid, Li-ion, and VRLA battery systems.
Battery / UPS Sizing
Results
Required Battery Capacity234 Ah
Load VA (apparent):2500 VA
DC Power Required (W):2222 W
DC Current Draw (A):46.3 A
Usable Capacity (Ah):185 Ah
Nominal Battery Capacity (Ah):234 Ah
Formula Used
Ah = (W × h) / (V_batt × η × DoD)