Dave, How deep cycle do you want it to be? Sometimes, I go 3 or 4 days without having to recharge it. It only operates 3 12 volt 40 watt bulbs, a 12volt stereo and CD, and the little air compressor for my pressurized water system, while boondocking. Since it is only $49, and carries the load adequately, If I have to buy a new one every 3 years, I can live with that. Bill 61 Bambi
Bill: Is the 3ET a deep cycle battery? David
