72v 8ah Ampace JP40 Lithium ion E-Bike Battery

⚡ 72V 8ah Premium eBike Battery – Featuring Advanced Ampace JP40 21700 Cells
Built in the USA | High-Current | Cold-Weather Ready
 
🔋 Premium U.S.-Made eBike Power
Upgrade your ride with the 72V Ampace JP40 eBike Battery, custom-built in Bethlehem, Pennsylvania by Bicycle Motor Works, a family-owned manufacturer trusted since 2014.
Every pack is hand-assembled in the U.S. using premium certified 21700 cells, advanced materials, and high-current BMS protection for riders who demand both power and reliability.
This is not an imported, mass-produced battery — it’s a precision-built American pack engineered to perform under the most demanding riding conditions.
 
⚙️ The Ampace JP40 – The Most Advanced 21700 Cell in the World
The Ampace JP40 represents the next generation of lithium-ion cell technology, outperforming industry-leading models like Molicel P42A, P45B, and P50B in both energy delivery and thermal stability.
 
Why Riders Love the Ampace JP40:
⚡ Highest performing 21700 cell by discharge rate
❄️ Cold-weather champion – no capacity loss down to -20°C (-4°F)
🔩 Tabless (all-tab) design – peak current of 140 amps for 5-second bursts per cell
🔥 Superior energy and heat management compared to Molicel P42A, P45B, and P50B
🧪 Extreme reliability – 100 stress-test cycles at 30A continuous with only 2% capacity loss
These cells are purpose-built for high-current eBike applications, offering unmatched torque, consistent voltage, and excellent longevity.
 
 
⚡ Battery Options
Choose the configuration that matches your ride and power demands:
Model
Voltage
Capacity
Configuration
Energy (Wh)
BMS Rating
Dimensions
Weight
72V 8Ah Pack
72V
8Ah
20S2P – Ampace JP40 21700 Cells
576Wh
80A Continuous / 120A Max
9” × 4” × 3”
~7 lbs
72V 12Ah Pack
72V
12Ah
20S3P – Ampace JP40 21700 Cells
864Wh
80A Continuous / 120A Max
13.75” × 3.75” × 3.25”
~11.25 lbs
 
 
💪 Performance Highlights
✅ 72V High Voltage System – Delivers superior torque and top-end performance
⚙️ High-Current Capability – Up to 80A continuous / 120A burst
🔋 Optimized for CYC X1, BBSHD Ludicrous, and BAC ASI setups
🔥 Enhanced Heat Dissipation – Compact internal structure prevents trapped heat
💨 Low Resistance Connections – Solid nickel and copper busbars for maximum efficiency
🧊 Cold-Weather Ready – Performs flawlessly down to -20°C (-4°F)
🧠 Smart BMS Protection – Balances cells and prevents overcharge/discharge
Our tight-frame construction improves heat transfer and prevents energy loss, unlike imported packs that trap heat with excess air space.
This means cooler operation, longer lifespan, and consistent high-current output.
 
 
🧰 Construction Details
Every Bicycle Motor Works pack is meticulously designed for efficiency, durability, and safety.
 
Features Include:
Tough, rigid casing with thick dual shrink wrap and rubberized armor layer
Heavy-duty XT-90S output connectors with spark suppression
XT-60 charge connector for reliable recharging
Temperature-protected 80A BMS with active balancing
10AWG high-current silicone wiring for secure and efficient power delivery
Each cell and circuit is individually tested for voltage, resistance, and balance prior to assembly.
 
 
⚠️ Safety Guidelines
Lithium-ion batteries are powerful energy devices and must be handled carefully.
Please follow these precautions:
Charge only with the proper lithium-ion charger
Never short-circuit, puncture, or modify the battery
Do not use if wet or damaged
Never leave charging batteries unattended
Charge in a fireproof or metal container
If unsure, consult a professional before use
Improper handling may lead to damage, fire, or personal injury.
 
 
🚚 Shipping & Lead Time
All eBike batteries are built to order in the order received
Typical lead time: 6–10 business days
Tracking provided upon shipment
Ships from Bethlehem, Pennsylvania
U.S.-based support for all customer inquiries
 
 
🏆 Why Choose Bicycle Motor Works
🇺🇸 Proudly U.S.-Made Since 2014
👨‍🔧 Family-Owned & Operated
🔋 Premium Certified Ampace JP40 21700 Cells – No recycled or rewrapped cells
⚙️ High-Performance, Safety-Focused Design
🚴 Trusted by eBike Builders, Riders, and Professionals Nationwide
 
Bicycle Motor Works – Premium American-Made eBike Batteries.
Engineered for Power. Built to Last.