⚡ Bicycle Motor Works — 72v 15ah Ampace JP50 Winter-Ready, High-Current eBike Battery Power

Introducing the next evolution in high-output American-built eBike batteries — the Winter-Ready Series.

Precision-engineered in Bethlehem, Pennsylvania, this line embodies the perfect union of raw current capability, thermal stability, and engineering excellence.

Each pack in the Winter-Ready Power Series is powered by genuine Ampace INR21700-JP50 cells — advanced high-drain lithium-ion cells that deliver an incredible 5,000 mAh capacity and up to 60 A continuous discharge. The JP50 represents the future of compact, high-power energy systems — designed for riders and builders who push the limits of performance, endurance, and reliability.

🔋 This Model: 72V 15Ah (20S 3P) — 13.75 × 3 × 3.75 in • Traditional Encasement

⚙️  Ampace JP50 Cell Highlights

• True 5,000 mAh nominal capacity (≥ 4,950 mAh minimum) for extended range and endurance

• 60 A continuous discharge capability — delivering serious current for demanding eBike systems

• Ultra-low internal resistance (≤ 4 mΩ) for efficient current transfer and minimal heat buildup

• Wide operating range from –40 °C to +80 °C for four-season reliability

• Tabless high-rate design enhances conductivity, reduces heat, and improves cycle longevity

• 3.6 V nominal / 4.2 V max charge voltage — standard lithium-ion architecture for compatibility

• High energy density (~5 Ah per cell) within the lightweight 21700 format (~67 g per cell)

• Long cycle life (~600 cycles @ 80% DOD retaining ≥ 60% capacity)

• Certified & traceable: UN38.3 / UL1642 / IEC62133 compliant

• Designed for ultra-high-drain applications — ideal for performance eBikes, light EVs, and power tools

💡 Why Choose the Winter-Ready Series, by Ampace JP50

• Exceptional torque delivery and sustained power for high-performance eBike systems

• Cooler operation and minimal voltage sag under heavy acceleration or long climbs

• Reliable all-weather performance with superior temperature tolerance

• Precision-built in limited runs using pure copper busbars and advanced high-discharge BMS

• Designed for builders, commuters, and performance enthusiasts who demand dependable power

🧠 Innovative Power. American Precision.

Every pack is hand-crafted in Bethlehem, Pennsylvania, where advanced engineering meets American craftsmanship.

Designed for performance commuters, off-road riders, and custom EV projects, these batteries embody Bicycle Motor Works’ enduring commitment to power, integrity, and innovation.

Innovative Power. Crafted for Performance.
Only from Bicycle Motor Works — The Original American eBike Battery Manufacturer.

⚠️ Safety Guidelines

Please read our eBike Battery 101 Guide before use. Lithium-ion batteries must be handled with care.

Always:

• Charge with the correct lithium-ion charger

• Charge in a fireproof or metal container

• Store in a cool, dry environment

Never:

• Modify connectors or wiring

• Charge unattended or near flammables

• Use if damaged or wet

Improper handling can cause fire or injury — consult a professional if unsure.

🚚 Shipping Information

• Built to order in Bethlehem, PA

• Ships within 6 – 10 business days

• Tracking provided upon shipment

• U.S.-based support available

🏆 Why Choose Bicycle Motor Works

🇺🇸 Proudly Built in the USA Since 2014
👨‍🔧 Family-Owned & Operated
🔋 Certified 21700 Cells Only – No Rewraps or Recycled Cells
⚙️ Copper Busbar Engineering for Maximum Efficiency
🚴 Trusted by eBike Builders & Riders Nationwide

Bicycle Motor Works – Premium American-Made eBike Batteries.
Engineered for Power. Built to Last.]