A UPS is basically a battery with built-in electronic controls. Plugging it into an outlet keeps the battery charged and provides power to your electronics. When the power goes out, the battery kicks in automatically, powering whatever you have plugged into the UPS without interruption. UPS units are rated by volt-amps and watts, which is a power limit and a rough estimate of how long the battery will last. Many UPS systems. I charged each UPS unit for eight hours as recommended. When they were fully charged, I plugged in the homeLAB's WiFi router, which uses 15. CyberPower lasted the longest at five hours and 30 minutes, though APC was close behind. The Amazon Basics UPS didn't maintain power nearly as long as the other two. The full prices are provided, but the units can be found on sale online.
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