Without trying to sound like a Parrot .. Have kept all my Rides on a Deltran Battery Tender Jr. anytime they are parked for over 10 years with Great Results and I ride almost daily.. Just knowing I am starting at Peak Voltage alone whether parked overnight or a week has convinced me .. Even my old Carbed Dyna which has no voltage drain when shut off is always kept tendered parked at home .. Never had a battery last less than 5 Years, so everyone to their own decision, this is mine ..