In SWFla we are subjected to NUMEROUS thunderstorms. I VERY RARELY lose signal, however the electricity goes out quite often during these storms, usually only for a couple of minutes. I don't have to tell you how long it takes to reaquire sat. signal when power is lost. I saw a battery backup surge protector for sale at staples a couple weeks ago & bought it for that reason. It was put to the test yesterday. We had a storm that lasted hours & lost electricity 7 or 8 times. I have two HR20-700 DVR's plugged in to the battery backup & both kept running. It will be nice to not miss anymore recordings or plays when watching a game.