This is a used Minn Kota MK 210D on-board battery charger. It features a 2-bank design, providing 10 amps total (5 amps per bank). The charger is fully automatic and temperature compensated for 12V/60Ah batteries, and is suitable for maintenance or starved electrolyte (AGM) batteries. The unit is in good working condition with some signs of wear typical for its age.