Keep It Clean's Ultra Charge Digital Smart Charger is the first of a new generation of "Computer-On-A-Chip" technology. It conditions "sulphated" batteries as well as automatically charging any type of 12-volt storage battery without ever over-charging. Great for any 12 volt battery. Leave it on any battery/vehicle while in storage and never have to worry about a dead or sulfated (ruined) battery ever again. Works on cars, motorcycles, ATV's, watercrafts, boats, and generators.
http://www.keepitcleanwiring.com/catalog/details/337074/Ultra-Charge-Digital-Smart-Charger&refid=5008