Original battery for the Yamaha RDS250 and RDS300 underwater scooter. Includes proprietary catalyzing system designed exclusively for Yamaha underwater scooters. Enjoy uninterrupted swimming, snorkeling or diving all season long! The Yamaha RDS250 and RDS300 seascooter battery are rated up to 2 hours of run time. Includes battery leads and connectors. Recharge time is 6 to 8 hours.