Amazon.com: AlveyTech 36 Volt Sealed Lead Acid Battery Pack for The Razor Crazy Cart XL Electric Scooter (12 Ah, No Harness) - Non-Spillable SLA/AGM Deep Cycle Rechargeable Batteries, Ride-On Toys, 2-Wheel Bikes :
AlveyTech 24 Volt 2.3 Ah Replacement Battery Pack with Harness for Razor Crazy Cart Shift (Ver. 1+) - Walmart.com
Razor Crazy Cart DLX 12V 35Ah Electric Scooter Replacement Battery: BatteryClerk.com Electric Scooter
Amazon.com: AlveyTech 36 Volt Sealed Lead Acid Battery Pack (15 Ah with Harness) for the Razor Crazy Cart XL - Set of x3 (12V) SLA/AGM Deep Cycle Replacement Batteries, Scooter, Sport Bike,