The MINN KOTA MK220D digital on-board chargeris engineered with a micro-processor-based design to protect your battery, charge faster and help you stay on the water longer. Monitors temperature and state-of-charge. Enhanced status codes display charge stage, maintenance mode status, any error notifications and full charge. Automatic shut-off feature extends battery life by shutting down when charging is complete. Mounts conveniently in the battery compartment. 2 charging banks 10 amps per bank 20 amps total output Recovery Time: 4-6 hours Size: 13-1/2" length x 7-1/2" width x 4" height Weight: 15 lbs. Digitally-controlled microprocessor design protects your batteries so you can stay on the water longer Up to 2X faster charging in high temperatures Enhanced status codes provide comprehensive feedback on charge stage, maintenance mode status, error notification and full charge Convenient on-board mounting eliminates the hassle of traditional portable chargers Fully automatic multi-stage charging (bulk, absorption and maintenance) so you get a full charge every time Automatic temperature compensation delivers fast charging recovery, even in extreme temperatures, while protecting your batteries from overcharging Waterproof*, shock- and vibration-resistant aluminum construction Short circuit, reverse polarity and ignition protection Saltwater tested and fully resistant to corrosion For use with 12 or 24 volt systems with 12V / 6-cell batteries that are flooded/wet cell, maintenance free or starved electrolyte (AGM) only (40-130 amp hour rating) FCC compliant Warranty: 3 year UL listed to marine standard 1236 Includes: one pre-wired on-board marine battery charger with two 6' fused output cables and one 6' AC power cord, installation instructions and owners manual