I keep mine plugged in to 120v all the time. I keep our coach parked at the end of our drive and close to the garage. I use a 12g extension cord, dog bones to go from 50a to 20a, and push the plugs up under the coach to protect from rain. I occasionally go out and tinker in the coach with something, this way I can turn on tv or whatever else with no problems. I never put battery switch in store position.