⚡ Bicycle Motor Works — Curated Performance Line Featuring BAK 45D Cells
The Curated Performance Line continues our mission to deliver the most advanced, American-built eBike batteries for riders who demand intelligent, reliable, and powerful energy systems.
Curated 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 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 9 Ah (14S 2P) — 6.5 × 4 × 3” • Traditional Encasement
52V 13.4 Ah (14S 3P) — 12.25 × 3 × 3.1” • Traditional Encasement
52V 18 Ah (14S 4P) — 12.25 × 4 × 3” • Traditional Encasement
52V 22.5 Ah (14S 5P) — Shark Series • Lock + Mount System • 14.5 × 3.8 × 6.2”
72V Options
72V 9 Ah (20S 2P) — 9.25 × 4 × 3” • Traditional Encasement
72V 13.5 Ah (20S 3P) — 13.75 × 3 × 3.75” • Traditional Encasement
72V 18 Ah (20S 4P) — Shark Series • Lock + Mount System • 14.5 × 3.8 × 6.2”
⚙️ BAK 45D Cell Highlights
4.5 Ah nominal capacity (minimum ~ 4.4 Ah) in the 21700 format
60 A continuous discharge / high-pulse burst capability, ensuring stable, high-power output
Ultra-low internal resistance ≤ 5 mΩ, reducing voltage sag and heat buildup under heavy load
Lightweight and efficient — ~ 68 g per cell for optimized weight-to-power ratio
Wide operating range: performs from –20 °C to +60 °C, maintaining strong cold-weather reliability
Advanced tabless (or low-tab) design for improved conductivity and thermal control
High cycle life: ~ 600 cycles @ 80% DOD, retaining ≥ 60% capacity
Industrial-grade certifications: UN38.3 / UL1642 / IEC62133 compliance for safety and traceability
💡 Why Choose the Curated Performance Line Featuring BAK 45D Cells
Consistent high-current output for power-hungry eBike motors and demanding rides
Cooler operation with less voltage drop under sustained load
Durable, long-life design for high-frequency commuters and performance enthusiasts
Compact power density that maintains a lighter footprint without sacrificing output
Hand-curated builds ensure each pack meets Bicycle Motor Works’ exacting performance and quality standards
🧠 Built by Experts, Trusted by Riders
From precision assembly to real-world testing, each pack 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.
Curated 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.