Looking to go the distance? Want to keep a spare for long rides or just in case? This 36v 5.4Ah waterbottle battery includes mounting dock, motor controller, a USB port for charging your electronics, and plenty of stealth good looks. For new 2020 Sprinter kits and beyond. For Hilltopper kits made prior to 2020 please see the universal replacement battery or contact support@hilltopperbikes.com with your model and estimated year for replacement battery options (for old 24v kits see our DIY battery module hack for one clever and thrifty option).