52v 20ah Molicel P50B Series Li-ion eBike Battery

⚡ USA-Made 52V 20ah eBike Battery – High Current 14S4P Pack

Molicel P50B 21700 Cells | 20Ah 1040Wh | 15Ah 780Wh | Built for Extreme Performance

Experience premium American engineering with the Bicycle Motor Works High Current 14S4P eBike Battery Pack, built by hand in Bethlehem, Pennsylvania.
This pack delivers massive continuous current, exceptional thermal stability, and high-efficiency performance for demanding riders and high-power mid-drive systems.

Designed with Molicel P50B 21700 cells, each rated for 60A continuous output, this battery is the ultimate upgrade for CYC Motors, BBSHD Ludicrous builds, and high-current ASI BAC setups.

🔋 Key Specifications

• Voltage: 52V (14S4P configuration)

• Capacity Choice: 20Ah (1040Wh) 

• Cell Type: Molicel P50B 21700 – 60A continuous rated cells

• BMS: 60A continuous / 100A+ capable

• Dimensions: Approx. 12.25” × 4.25” × 3” 

• Output Wiring: 10AWG silicone leads for high current draw

• Weight: Compact and balanced for performance builds

• Build: Safely sealed, protected, and tested before shipment

⚙️ Performance Highlights

• High-Current Power Output – Delivers over 100A continuous without overheating

• Perfect for Mid-Drive Motors – Ideal for CYC X1, BBSHD Ludicrous, BAC & ASI setups

• Superior Heat Dissipation – Tight-frame design minimizes trapped heat

• Long-Lasting Power – Over 700+ charge cycles with minimal impedance growth

• Low Voltage Sag – Copper and nickel busbars ensure smooth, stable output

• Custom U.S. Manufacturing – Built in-house for quality control and reliability

This pack is engineered to run cooler, last longer, and perform harder — giving you consistent torque and faster throttle response even during extended rides or climbs.

🧠 Engineered for Safety and Longevity

Each cell and series is individually tested before assembly.
The advanced Battery Management System (BMS) provides:

• Overcharge & over-discharge protection

• Active cell balancing for long-term health

• Temperature protection for consistent operation

Solid copper/nickel busbars ensure maximum conductivity and minimal energy loss.
Every pack is sealed for protection against vibration, dust, and debris — ready for real-world riding.

⚠️ Safety Guidelines

Lithium-ion batteries are powerful energy systems and must be used responsibly.
Always use an approved lithium-ion charger and follow all safety instructions.

Do Not:

• Short-circuit, puncture, or expose to water

• Modify connectors or wiring

• Leave unattended while charging

• Continue use if damaged or wet

Charge in a fire-safe area (metal or fireproof enclosure recommended).
Improper use may result in fire or injury.

Read our eBike Battery 101 Guide and Terms & Conditions before purchase.

🚚 Shipping Information

All Bicycle Motor Works eBike batteries are built to order and shipped in sequence.

• Standard lead time: 5–10 business days

• Tracking information sent upon shipment

• U.S.-based support available for product assistance

🏆 Why Choose Bicycle Motor Works

• Proudly Made in the U.S.A. since 2014

• Premium Certified Molicel 21700 Cells – no reused or rewrapped cells

• Overbuilt for Safety & Performance – copper busbars, silicone leads, smart BMS

• Exceptional Customer Service – from a family-owned American company

Power your ride with proven, American-built performance.
Bicycle Motor Works – Premium eBike Batteries. Built Right. Built Here.