⚡ 72v 20ah Molicel P50B Locking Super Pack
– The Ultimate High-Current, Long-Range eBike Battery
- Built in the USA | Extreme Power for High-Performance Rides
🔋 Premium U.S.-Made Power
Meet the Locking Super Pack Collection — our most powerful and durable 72V eBike battery series, hand-built in Bethlehem, Pennsylvania by Bicycle Motor Works, a family-owned American manufacturer since 2014.
Unlike imported batteries, we manufacture every pack ourselves using certified, genuine 21700 cells and precision-engineered components for superior efficiency, heat control, and safety.
This is not just another “big pack.” It’s a purpose-built, high-current powerhouse — made for serious riders, custom builders, and anyone who demands the best.
⚙️ Choose Your Premium Cell Configuration
Each Locking Super Pack is available in your choice of premium, high-discharge 21700 cells. Whether you prioritize range or raw power, there’s a perfect configuration for your setup.
⚙️ 72V Super Shark – High-Current, Long-Range eBike Battery Options
| Cell Type / Model | Voltage / Capacity | Continuous Rating | Best For |
|---|---|---|---|
| Samsung 50S | 72V 20Ah | 100A | Long-range endurance & consistent power |
| Samsung 40T | 72V 16Ah | 140A | Peak power performance & quick bursts |
| Molicel P42A | 72V 16.8Ah | 160A | High-current balance & sustained output |
| Molicel P45B | 72V 18Ah | 180A | Ultra-high current & efficiency under heavy load |
| Molicel P50B (NEW) | 72V 20Ah | 240A | Extreme power output, thermal stability & long-range rides |
Each pack is assembled using 80 genuine 21700 cells (20S4P) and custom 0.5mm copper busbars, designed to handle 300A+ continuous current — far exceeding what most systems will ever demand.
🔩 Built for Maximum Efficiency
Our precision-cut 0.5mm copper busbars are a hallmark of our engineering.
They deliver the lowest resistance, minimal heat, and smoother power output under full load.
Each connection is spot-welded using 0.2mm nickel/copper composite tabs to guarantee reliable power transfer and stability through every ride.
💪 Performance Highlights
⚡ 72V High Voltage System – The ultimate upgrade for torque and speed
🔋 Massive Capacity Options – 16Ah to 20Ah for long-range or power setups
🔧 80A Smart BMS – Protects from overcharge, over-discharge, and imbalance
🔐 Integrated Locking System – Dual-key security for theft prevention
🧱 Heavy-Duty Mounting Cradle – Metal-reinforced with adjustable anchor points
💨 Direct-Wire Design – 10AWG silicone wiring runs through the cradle for max efficiency
🧊 Advanced Heat Dissipation – Compact internal structure prevents heat trapping
🧠 No Weak Links – Built without fragile case connectors, switches, or charge indicators for higher reliability
These packs are built to handle continuous output under high-current demand while staying cooler, safer, and more consistent than imported or rewrapped alternatives.
🧰 Technical Specifications
| Feature | Specification |
|---|---|
| Voltage | 72V (20S Configuration) |
| Capacity | 16Ah–20Ah (varies by cell type) |
| Energy | Up to 1,440Wh |
| Cells | 21700 Premium Grade (Samsung or Molicel) |
| BMS | 80A Continuous (300A Busbar Rated) |
| Busbars | 0.5mm Solid Copper, Nickel-Copper Weld Tabs |
| Case | Locking “Super Shark” Design |
| Dimensions | 14.5" × 3.8" × 6.2" |
| Weight | ~15 lbs |
| Build Location | Bethlehem, Pennsylvania, USA |
🚴 Perfect For
High-powered CYC, BBSHD Ludicrous, and BAC ASI setups
Custom 72V conversions and performance eBikes
Riders demanding long-range capability and consistent high discharge
Builders who want a secure, locking, high-current pack that’s made to last
🧠 Built for Safety & Longevity
Every Bicycle Motor Works pack undergoes strict testing and assembly standards:
Each cell and series is individually tested for voltage and resistance
Spot-welded copper busbars for efficiency and safety
Tight internal structure for superior heat management
Temperature-protected 80A BMS for reliability under extreme conditions
We don’t overpromise — we overbuild. That’s why every pack we ship is made to perform safely and efficiently for years.
⚠️ Safety Information
Please read our eBike Battery 101 Guide before use.
Lithium-ion batteries are powerful and must be handled with care.
Always:
Charge with a compatible lithium-ion charger
Charge in a fire-safe or metal container
Store in a dry, cool environment
Consult a professional installer if unsure
Never:
Modify connectors or wiring
Charge unattended or near flammable materials
Use a wet or damaged pack
Disassemble or hardwire directly to controllers
Failure to follow proper precautions can result in damage, fire, or injury.
🚚 Shipping & Lead Time
Built to order in the U.S.
Ships within 6–10 business days (in order received)
Tracking provided upon shipment
Customer support available for all orders
Super Shark 72v 20ah Molicel P50B eBike Battery Pack
Our policies must be read, understood and agreed upon before making a purchase, which include eBike Battery 101, Privacy Policy, Store Policies and Terms of Use. All of these materials and access to our manuals are available on our website, under Resource Center.