Product Description You don't give your batteries a day off — so your charger better be able to keep up. Our Digital on-board chargers are workhorse power plants that feature a microprocessor-based digital design to create a quick, safe charge, keeping you on the water all day, year after year. Amazon.com This digital on-board charger is engineered with a micro-processor-based designed to protect your battery, charge faster, and help you stay on the water longer. With 3 banks at 5 amps each for a total of 15 amps total output, this smart charger 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. By monitoring factors like temperature and state of charge, the MK210D delivers a faster, more regulated precise charge-so you can stay on the water longer, without worrying about your batteries. Features like multi-stage charging and automatic temperature compensation provide more precise charges that won't damage your battery. And the automatic shut-off feature extends battery life by shutting down when charging is complete. In high temperatures, the on-board charger juices up your batteries up to twice as fast. Features:3 charging banks; 5 amps per bank 15 total amps Digitally-controlled microprocessor design protects your batteries so you can stay on the water longer Up to 2X faster charging in high temperatures Multi-stage charging and automatic temperature compensation 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 Includes (1) pre-wired on-board marine battery charger, (3) 6-foot fused output cables, (1) 6-foot AC power cord, instructions, manual Specifications:UL listed to marine standard 1236 Recovery Time: 10-12 hours Size: 12.5 by 7.5 by 4 inches (L x W x H) Weight: 14 pounds 10 amps total output 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 FCC compliant Warranty: 3 year