Yamaha RDS250, RDS300 Sea Scooter BatteryYamaha Seascooter Battery for Yamaha RDS250 and RDS300. Never run out of power with an additional battery for the Yamaha RDS250 and Yamaha RDS 300. The Yamaha RDS250/RDS300 battery is rated up to 2 hours of run time. Includes battery leads and connectors as shown. Includes proprietary catalyzing system desig..