i know with my stuff....bike , cars .....fresh oil change, gas stabilizer,....and a battery tender.....just firing it up doesn't really give it a chance to charge...plus i 've used desicant holder(like the ones used in an RV)...some say they may cause corosion in wiring, but at least they slow down the moisture and that old car smell.....might also be an idea.....heard it from some collector .........steel wool in the tail pipes.....keeps the critters from making a home in you tail pipes....