One of the reasons why we have gas lamps and a small gas camping stove. I think the battery back up for the Internet will last about +24 hours if used continuously. We did test it a few months ago and it worked okay for the day.Our son lost power at 0900 yesterday, and the reconnection estimate has now gone out from 1200 today to 1800 today. He reckons he’s got about 12 hours left in his LED rechargeable lamps, then its Wee Willie Winkie time. Fortunately they have a log burner and a gas ring on the hob.