Bicycle Motor Works SUPER PACK Locking Collection
The Ultimate 52V 25ah Molicel P50B High-Current, Long-Range eBike Battery – Built in the U.S.A.
 
Meet the Super Pack Locking Collection – the most powerful, high-current 52V battery system ever produced by Bicycle Motor Works.
Built by hand in our Bethlehem, Pennsylvania facility, every pack represents precision engineering, premium components, and unmatched American craftsmanship.
Unlike overseas suppliers, we are the manufacturer — which means every cell, connection, and weld is verified for safety, reliability, and performance. When you buy from us, you know exactly what’s inside your pack.
 
⚡ Product Overview
Model: 52V Super Shark – The Ultimate High-Current, Long-Range Pack
Cell Type: Molicel P50B – 52V 25Ah
Continuous Rating: 300 Amps
This battery is built for serious riders who demand extreme power output, long-range performance, and thermal efficiency. It delivers smooth, consistent energy under heavy load — ideal for high-torque eBike builds and long-distance rides.
 
🔋 Key Features
Built in the USA – Hand-assembled at our Bethlehem, PA facility
Premium Molicel P50B Cells – 52V 25Ah configuration (14S5P)
70 Genuine 21700 Cells – Grade-A certified for durability and consistency
Custom Copper Busbars (0.5mm thick) – Rated for 300+ continuous amps
Low Resistance, High Efficiency – Minimal voltage sag and reduced heat
80A BMS with ON/OFF switch – Controls input and output with protection
Push-button charge level indicator for quick status checks
Integrated lock system – Includes 2 keys for added security
Reinforced metal cradle – Adjustable anchor points for versatile frame fit
Direct-wire 10AWG leads – More reliable and efficient than cradle contacts
Weight: ~14 lbs
Size: 14.5” x 3.8” x 6.2”
Not ideal for full suspension frames – check dimensions before purchase
 
🧠 Engineered for Power and Reliability
Our custom copper busbars are rated to carry over twice the current you’ll ever need.
This overbuilt design means:
Less resistance and heat buildup
Higher sustained current with smoother power delivery
Minimal voltage drop even under max load
Each cell and series is tested before assembly, and the BMS (Battery Management System) actively protects against overcharge, over-discharge, and imbalance — ensuring long-term stability and peak efficiency.
 
⚠️ Safety Information
Lithium-ion batteries must be charged and handled with care.
Use only the approved lithium-ion charger for this pack.
Do Not:
Modify wiring, connectors, or casing
Leave unattended while charging
Expose to water or physical damage
Continue use if the pack becomes damaged or wet
If the pack is compromised, dispose of it properly through your local hazardous waste facility. Always charge in a fire-safe location (metal box, BBQ grill, or fireproof enclosure recommended).
Read our eBike Battery 101 Guide and Terms & Conditions before purchase.
Consult a professional if you are unsure about installation or handling.
 
🚚 Shipping Information
All eBike batteries are built to order and shipped in the order received.
Typical lead time: 6–10 business days
Tracking provided once shipped
Contact us anytime for order or product support
 
🏆 Why Choose Bicycle Motor Works
Made in the USA since 2014 – trusted nationwide for premium eBike power
Genuine, certified 21700 cells – never reused or rewrapped
Overbuilt for performance and safety – copper, nickel, and precision welding
Responsive customer service from experienced U.S. technicians
 
Ride farther, faster, and with total confidence — powered by American-built precision.
Bicycle Motor Works: The Future of eBike Power, Made in Bethlehem, PA.