NEW! MK 230 On-Board Charger Super fast, 15 amp performance and fully automatic charging. Features 3-5 hours of recovery time. 11-3/4" length x 6-3/4" width x 7" height. Weighs 16.6 pounds. 2 banks • 15 amps output per bank • 30 amps per output automatic 3-stage charging (bulk, absorption and maintenance) so you get a full charge each and every time. Automatic temperature compensation delivers fast charging recovery, even in extreme temperatures, while protecting your batteries from overcharging F