I have a couple of Tripp-Lite UPS's in our cottage to protect the more sensitive electronics and keep them alive through power outages until the backup generator kicks in if necessary. In our motorhome, I use an APC UPS that's had the original 12-volt gel cell removed and uses the coach 12-volt battery system instead. The UPS switches our satellite receiver, TV, Internet equipment, and my wife's medical equipment from shore power to the UPS within one cycle, so there's no service interruptions. I've also disabled the alarm on the UPS so it's not annoying us every time we pull the shore power plug before heading down the road.