⚡ 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