Sea Doo Dolphin Sea Scooter Battery Original Equipment Super Premium Battery For Sea Doo Seascooter Dolphin and Yamaha Seal Includes proprietary catalyzing system specifically designed for Yamaha and Sea-Doo underwater scooters(other "after market batteries" do not include this equipment and may cause explosion in sea scooters). Rechargeable ZS4B2 12V7.5AH SLA Battery, Includes battery leads and connectors as shown Up to 1.5 hours of run time. Compatible with models ZS2B, ZS4B2 and YZS4B2 Compatible with Yamaha Seal and Yamaha Explorer sea scooters.