Guides & Resources How to Size a UPS for your Project: kVA, kW & Battery Runtime admin, August 27, 2026August 27, 2026 What size UPS do I need? The answer depends on more than the total watts of your computers or equipment. A properly sized UPS must have enough kW and kVA capacity to carry the connected load while also providing the required battery backup runtime. This applies whether you are protecting a few computers, an office, CCTV system, server room, data centre or critical commercial equipment. Continue Reading