MinnKota MK 315D On-Board Battery Charger (3 Banks, 5 Amps per Bank) 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. Compatible with: MinnKota: MK 315D;