72v 8-12ah Ampace JP40 Lithium ion E-Bike Battery

⚡ 72V Premium eBike Battery – Featuring Advanced Ampace JP40 21700 Cells

Available in 8Ah or 12Ah | 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:

💪 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.