My 2013 Honda w/MotorTrike Adventure conversion was delivered in June 2013 and arrived via 18 wheeler with a dead battery. Someone had turned on both the handle bar warmers and the front seat warmer. Charged it up and it began giving me problems in July so I bit the bullet and replaced it with a new one.(Honda dealer would not replace it under warranty). No problems since, until one year later, after sitting for two weeks it would not start. Two bad cells, so I replaced it. I never use my radio, I have a GPS and a security system wired so my question is What should I expect for battery life?