I aint used it for a few years now but i had good usage out of a motor cycle battery on the long bleak winter nights on the Fens. I remember the first time i used it and that was the first ever national lottery, when was that?, Went from around 6.30pm till 1am (on a black n white set, snooker was a nightmare to watch), had a small battery operated booster for the aerial too as the signal in the Fens was naff. Best fish (Zed) that night was 12 odd i think.