⚡ Bicycle Motor Works — Innovator Series Featuring BAK 45D Cells
The Innovator Series continues our mission to deliver the most advanced, American-built eBike batteries for riders who demand intelligent, reliable, and powerful energy systems.
Engineered in Bethlehem. Built for the world.
Each pack in this series is powered by genuine BAK 45D 21700 cells, engineered for 4.5 Ah capacity per cell and up to 60 A of continuous discharge — a remarkable balance of energy density, low resistance, and sustained power delivery. Every battery is precision-built in limited production runs using Grade-A cells, pure copper busbars, and a high-current BMS, ensuring peak output and safety under load.
🔋 Available Configurations
52V Options
• 52V 9Ah (14S 2P) — 6.5 × 4 × 3 in • Traditional Encasement
• 52V 13.4Ah (14S 3P) — 12.25 × 3 × 3.1 in • Traditional Encasement
• 52V 18Ah (14S 4P) — 12.25 × 4 × 3 in • Traditional Encasement
• 52V 22.5Ah (14S 5P) — Shark Series • Lock + Mount System • 14.5 × 3.8 × 6.2 in
72V Options
• 72V 9Ah (20S 2P) — 9.25 × 4 × 3 in • Traditional Encasement
• 72V 13.5Ah (20S 3P) — 13.75 × 3 × 3.75 in • Traditional Encasement
• 72V 18Ah (20S 4P) — Shark Series • Lock + Mount System • 14.5 × 3.8 × 6.2 in
⚙️ BAK 45D Cell Highlights
4.5Ah nominal capacity (minimum ≈ 4.4 Ah) in 21700 format
60 A continuous discharge / high-pulse burst capability for stable power delivery
Ultra-low internal resistance ≤ 5 mΩ → reduced heat and voltage drop
Lightweight (~68 g per cell) for optimized weight-to-power ratio
Wide operating range (–20 °C to +60 °C) for cold-weather reliability
Advanced tabless design for improved conductivity and thermal control
High cycle life (~600 cycles @ 80% DOD retaining ≥ 60% capacity)
Industrial certifications: UN38.3 / UL1642 / IEC62133 compliant
💡 Why Choose the Innovator Series Featuring BAK 45D Cells
Consistent high-current output for power-hungry eBike motors
Cooler operation and reduced voltage sag under load
Durable, long-life design for frequent commuters and performance riders
Compact power density that maximizes energy while minimizing size
Hand-built craftsmanship ensures each pack meets Bicycle Motor Works’ standards
🧠 Built by Experts, Trusted by Riders
From precision assembly to real-world testing, each pack in the Innovator Series is crafted in Bethlehem, PA, using the latest in high-current lithium technology.
Ideal for high-performance eBikes, commuter builds, and custom EV projects, these batteries redefine reliability and performance.
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.