Amazon.com: 36 Volt (3) 12Volt Battery Pack for the Razor Dirt Quad 500 With Wiring Harness W25143000003 Beiter DC Power : Automotive
Amazon.com: AlveyTech 36V 12 Ah Battery Pack for Razor MX500 Dirt Rocket Bike (with Wiring Harness) - Replacement 36 Volt Batteries Set, Parts for Electric Power Motor on Kids Scooter Quad Bicycle