My 09 Cambria chassis battery will go dead after about 3 weeks of non use. i purchased a 'smart 'charger and run it from coach power into a 12 volt accessory port.I used to use the HF float chargers but found one that was to hot to even touch plugged into the wall in my garage so they went into the trash. As far as the original poster and her battery issues. i used to test and switch out my own batteries, having AAA I now let them do it, their pricing is competitive, batteries guaranteed for 3 years and they do all the work. My coach batteries were a specialty item so i did those myself.
