Compatibility - 36V 15 Ah (Extended Range Upgrade) battery replacement for all versions of the Razor RSF650 Electric Sport Bike Premium Branded Batteries - AlveyTech battery packs use Universal Battery (UPG) brand batteries, leading suppliers of battery and power-related products in the United States for over 50 years Safely Packaged - To prevent damage, battery packs will not be shipped pre-assembled and will ship with protective terminal caps. Wiring harness will need to be installed. Instructions included Maximize Performance and Lifespan - Top charge prior to first use, keep charged even during periods of storage, don't overcharge, and use manufacturer recommended charger Verify Model Version - Check your Razor 19-digit ID, the 7th and 8th numbers in your product ID code are the version number of your Razor product (e.g. "01" = V1, "09" = Version 9, etc.) Manufacturer Part Numbers - W15128560003 / UB12150 Ease of Mind - Rechargeable, maintenance free, valve regulated, easy to handle, spill proof, Sealed Lead–Acid (SLA), utilizes Absorbed Glass Mat (AGM) technology. UL Certified: UL 2271 If you have an RSF650 Electric Sport Bike, this Razor equivalent 36 volt battery pack for the Razor RSF650 is an easy replacement part. You will receive three new 12 volt 15 Ah batteries. In addition, you will receive the Razor RSF650 battery pack with the correct RSF650 harness.