I use wizen cams all over the house, so half have small UPS units powering them. But for the Cable modem, Wifi, and entire master bedroom TV and entertainment devices, I have a huge battery UPS than can keep things running for many hours, to as long a a day if we don't watch TV. In my UPS, I took a high power 48 volts battery array out and quadrupled the size of the battery bank externally.