Compatibility - 36V 15 Ah (Extended Range Upgrade) battery replacement for all versions of the Razor MX500 Dirt Rocket electric 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 Number - W15128190003 / 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 Are your batteries not performing like they should? Introducing the AlveyTech 36V Battery Pack, a high-quality replacement battery pack for the Razor MX500 Dirt Rocket Bike. Designed for optimal performance, this battery pack is a must-have. It's also suitable for those seeking reliable batteries to enhance their biking experience.< br/ >< br/ > The AlveyTech 36V Battery Pack is designed to be a perfect replacement for your Razor MX500 Dirt Rocket Bike’s power source. The 15 Ah version gives you up to 25% more runtime while still suited for your bike's specific power requirements. This battery pack ensures your bike’s performance is never compromised, providing you with a seamless ride every time. < br/ >< br/ > Made with sealed lead acid technology, this battery pack guarantees long-lasting power and durability. Whether you’re an everyday rider or an occasional enthusiast, you can trust the AlveyTech 36V Battery Pack to keep your bike running smoothly. < br/ >< br/ > The AlveyTech 36V Battery Pack comes with a wiring harness, giving you flexibility in your installation process.< br/ >< br/ > As a trusted name in electric bike parts, AlveyTech is committed to providing top-quality products that meet your needs. From bike batteries to scooter parts, we offer a wide range of products to enhance your mobility experiences. < br/ >< br/ > In conclusion, the AlveyTech 36V Battery Pack is a reliable, high-quality power solution for your Razor MX500 Dirt Rocket Bike. Whether you're looking to replace old batteries or upgrade your bike's performance, this battery pack is the perfect choice. Invest in the AlveyTech 36V Battery Pack today and experience the difference in your rides.