We go out on the boat to get away from day to day stuff. If we wanted to watch a movie, I would take my 15" laptop and use it. It will show an entire movie on a charge. We charge the handheld VHF at home. I take a cell phone, but it is off unless I want to make a call (almost never happens). I can't imagine having a TV on a boat. We have a propane heater that takes almost no power (just what is required to run the propane solenoid). On the powerboat we don't have propane and wear jackets or sweaters when it is cold. On our last overnight, I think we might have consumed 12 amp-hours all told and 2/3 of that was to run the refridgeration. I use the netbook as my chart plotter. It will run for 6-8 hours on a charge