Premium 72V Electric Bike Battery – Built for High-Power Mid Drives Made in the USA | Molicel P50B Cells | 80A Continuous Output | Compact Power Design Take your ride to the next level with the Bicycle Motor Works Premium 72V eBike Battery, built exclusively with Molicel P50B 21700 cells — the ultra high-power cell trusted by performance riders and builders worldwide. Designed for high current, mid-drive motors, this compact powerhouse delivers massive torque, smooth acceleration, and unmatched reliability — all handcrafted in our Bethlehem, Pennsylvania facility. We don’t just trust our batteries are made right — we build them ourselves. Key Features - Premium Molicel P50B 21700 Cells – Industry-leading high-current lithium-ion cells - 72V 9Ah (648 Wh) – Compact, powerful design for mid-drive setups - 80A Continuous / 120A Burst BMS – Temperature protected and precision balanced - 20S2P Configuration – Built for efficiency, range, and consistent power output - Perfect for Backpacks or Frames – Compact fit (9” × 4” × 3”) - Tough, Rigid Construction – Double-shrink wrapped with a thick rubber outer layer - Beefy XT-90S Output Connector (no sparks) + Heavy-Duty XT-60 Charge Port - U.S.-Built, Tested, and Protected – Assembled with premium components Performance Highlights - 72 Volts = High Voltage Advantage – More torque, speed, and efficiency - Molicel P50B (2P) Rated 120A Continuous – Massive headroom for powerful mid drives - Low Resistance Copper & Nickel Busbars – Maximum current flow, less heat - Smart BMS System – Monitors voltage, current, and temperature for safety and performance - High Thermal Efficiency Design – Tight frame prevents heat trapping and improves cooling - Plug-and-Play Compatible – Works seamlessly with 72V and high-performance 48V systems Your controller will only draw the amps it needs, but this battery gives you power in reserve — ready for motor or controller upgrades down the road. Built for Safety & Efficiency Each cell and series is individually tested before assembly. The integrated Battery Management System (BMS) ensures: - Overcharge / Over-discharge protection - Cell balancing - Thermal stability under heavy load Solid copper and nickel busbars are precision spot-welded to each cell for maximum conductivity and reliability. This overbuilt design means smoother power delivery, cooler operation, and longer battery life. Safety Warning Lithium-ion batteries are powerful energy systems and must be handled with care. Always charge using the proper lithium-ion charger. Do Not: - Short-circuit or puncture the pack - Modify connectors or wiring - Leave charging unattended - Use if wet or physically damaged Charge in a fire-safe location (e.g., metal enclosure or fireproof box). Improper use can result in injury, fire, or damage. Read our eBike Battery 101 Guide and Terms & Conditions before purchase. Shipping Information All eBike batteries are built to order and shipped in the order received. - Typical lead time: 2–10 business days - Tracking provided once shipped - U.S.-based support always available Why Choose Bicycle Motor Works - American-Made Since 2014 – Proudly built in Bethlehem, Pennsylvania - Premium Certified 21700 Cells – Genuine Molicel quality - Overbuilt for Performance & Safety – Tested, protected, and guaranteed - Expert Customer Support – Real riders, real experience Bicycle Motor Works – Premium Power. Proven Performance. Built in the U.S.A.