UPS Battery Calculator
UPS Battery
Estimate UPS runtime based on battery capacity and load.
Formula
Runtime (min) = (Battery Ah x 12V x 0.85 / Load W) x 60
Frequently Asked Questions
How long will a UPS last?
Runtime depends on battery size and load. Lower load means longer runtime.
What size UPS do I need for a PC?
A 1000 to 1500 VA UPS handles most desktop computer setups.