48V 9ah Molicel P45B eBike Battery -
Bicycle Motor Works Premium 48V eBike Battery Collection
Made in the U.S.A. | Genuine Certified 21700 Cells | High-Performance Power for All-Weather Riders
Upgrade your ride with premium American-made eBike batteries from Bicycle Motor Works — designed for riders who demand performance, reliability, and safety.
Every pack is hand-built in the USA using Grade-A certified 21700 lithium-ion cells and engineered to deliver powerful, efficient performance for daily commuting, off-road adventures, and all-weather conditions.
Perfect for replacement or upgrades, our 48V packs offer the ultimate combination of lightweight design, high output, and long lifespan.
⚡ Key Features
Premium 48V eBike Battery Collection – built in the U.S.A. for performance & durability
Replacement eBike Batteries (customization consulting available)
Grade-A 21700 Cells – consistent power, longer life, and higher safety
Compact, lightweight design (under 5 lbs!) for better balance and portability
Engineered for efficiency with superior heat dissipation and protection
45A continuous / 100A max BMS – with temperature and short-circuit protection
XT-90S (no-spark) discharge connector and XT-60 charge lead
400–1000 charge cycles lifespan
Dedicated customer service and technical support always available
🔋 COMPARE & SHOP MODEL OPTIONS!
Cell & Capacity Options (48V 8Ah–10Ah)
| Cell Type | Current Rating | Ideal Use |
|---|---|---|
| Samsung 40T | Medium-High | Balanced power and range |
| Samsung 50S | Medium | Efficient for long rides |
| Molicel P42A | High | Performance-focused builds |
| Molicel P45B | Ultra-High | Extreme torque & thermal control |
| Molicel P50B | Ultra-High | Top-tier output and endurance |
📏 Technical Specifications
Size: 4" × 6.5" × 3"
Configuration: 13s2p – 26 Genuine Grade-A 21700 cells
Continuous Discharge: 45A (100A max)
Connectors: XT-90S (no spark) discharge / XT-60 charge lead
Temperature Protection: Built-in thermal safety monitoring
Cycle Life: 400–1000 full charges
Construction: Solid nickel and copper welded connections for high conductivity
Our tight-frame design minimizes empty air space, improving heat dissipation and longevity. Each cell and series is individually tested prior to assembly. The integrated Battery Management System (BMS) prevents over-charging, over-discharging, and automatically balances cells for maximum efficiency and safety.
⚠️ Safety Information
Important: Lithium-ion batteries must be charged and handled responsibly.
Always use the correct lithium-ion charger and follow all safety guidelines.
Do Not:
Leave the battery charging unattended
Short-circuit, puncture, or expose to moisture
Modify wiring, connectors, or housing
Continue using a damaged or wet pack
If damaged, contact your local hazardous waste disposal facility for proper disposal. Always charge your battery in a fire-safe area such as a metal enclosure or non-flammable container.
Failure to follow proper charging and safety procedures may cause fire, injury, or property damage.
🏆 Why Choose Bicycle Motor Works
Over 10 years of trusted U.S. eBike battery craftsmanship
Custom consulting available for replacement or performance upgrades
Built with premium cells, tested components, and safety-first engineering
Backed by full customer support and a commitment to rider confidence
Experience the difference of American-made, high-performance eBike batteries.
Bicycle Motor Works — Reliable Power. Built for Riders.
48V 9ah Molicel P45B Lithium-ion eBike Battery
Our policies must be read, understood and agreed upon before making a purchase, which include eBike Battery 101, Privacy Policy, Store Policies and Terms of Use. All of these materials and access to our manuals are available on our website, under Resource Center.