52v 8-16ah Ampace JP40 Lithium ion E-Bike Battery

⚡ 52V Premium eBike Battery – Featuring the Advanced Ampace JP40 21700 Cells

Available in 8Ah, 12Ah, or 16Ah Models | Made in the USA | High-Current | Cold-Weather Ready

🔋 The Next Generation of High-Performance eBike Batteries

Experience next-level power and reliability with the 52V Ampace JP40 eBike Battery, custom-built by Bicycle Motor Works in Bethlehem, Pennsylvania.

As a family-owned manufacturer since 2014, we handcraft each pack using only premium, Grade-A cells — ensuring superior performance, safety, and durability.

Powered by the Ampace JP40 21700 cell, the most advanced lithium-ion technology on the market, this pack delivers exceptional discharge rates, cold-weather endurance, and ultra-efficient thermal control for the most demanding eBike setups.

💥 Ampace JP40 – The Cell That Redefines High-Current Performance

The Ampace JP40 is the new benchmark for high-current 21700 lithium-ion cells, outperforming industry favorites like Molicel P42A, P45B, and P50B in every measurable way.

They are superior in high-current applications in several ways:

• ⚡ Highest-performing 21700 cell by discharge rate

• ❄️ Exceptional cold-weather performance – No loss of capacity down to -20°C (-4°F)

• 🔩 Tabless “all-tab” design – Delivers up to 140A peak current (5-second bursts per cell)

• 🔥 Outperforms Molicel P42A, P45B, and P50B in energy delivery and heat control

• 🧪 Proven durability – Survived 100-cycle stress tests (30A continuous / 5A charge) with only 2% capacity loss

These cells are purpose-built for extreme eBike power, offering reliable high output, efficient cooling, and consistent performance — even under heavy throttle or steep climbs.

⚙️ Choose Your Power Level

Each pack includes:

• 10AWG silicone output wiring

• XT-90S anti-spark discharge connector

• XT-60 heavy-duty charge connector

• Temperature-protected BMS

• Double shrink-wrapped rubber armor for impact protection

🚴 Performance Highlights

• ✅ 52V = More Power on Any 48V System – Plug-and-play upgrade for more torque & range

• ⚙️ Handles 80A+ Continuous Output – Ideal for CYC X1, BBSHD Ludicrous, and BAC ASI setups

• 💨 High Efficiency & Low Resistance – Custom copper/nickel busbars for smooth current flow

• 🧊 Superior Heat Dissipation – Tight internal structure prevents trapped heat

• 💪 Compact, Rugged Design – Tough rubber exterior for vibration and water resistance

• 🔋 Long Cycle Life – Up to 1000 charge cycles with consistent performance

This pack is engineered to deliver more torque, throttle response, and sustained power, even under heavy load — with minimal heat buildup for long-lasting reliability.

🧠 Built with Care. Tested for Excellence.

Every Bicycle Motor Works battery is hand-assembled, spot-welded, and tested for voltage, balance, and resistance.

Each unit includes:

• Precision cell-matching and balancing

• Solid nickel and copper connections for efficient current delivery

• 80A continuous BMS with integrated temperature protection

• Smart balancing circuit for extended cell life and performance consistency

Our compact frame design improves heat transfer and safety by minimizing internal air gaps — ensuring every ride stays cool and reliable.

⚠️ Safety Guidelines

Lithium-ion batteries are powerful devices and must be handled responsibly.

Please follow these precautions:

• Use only the correct lithium-ion charger

• Never short, puncture, or modify the pack

• Do not charge unattended or near flammable materials

• Avoid use if wet, swollen, or physically damaged

• Charge in a fireproof or metal container

• Read our eBike Battery 101 Guide for detailed safety and care tips

Improper use can result in injury or damage — if in doubt, consult a professional.

🚚 Shipping Information

• Built to order and shipped in sequence

• Typical lead time: 5–10 business days

• Tracking provided upon shipment

• Ships from Bethlehem, Pennsylvania

• U.S.-based support available for all customers

🏆 Why Riders Choose Bicycle Motor Works

• 🇺🇸 Proudly Built in the USA since 2014

• 👨‍🔧 Family-Owned, Quality-Focused Craftsmanship

• 🔋 Premium Certified 21700 Cells Only – Never Rewrapped

• ⚙️ High-Performance Engineering for Real Riders

• 🧰 Trusted Nationwide by Builders & Enthusiasts

Bicycle Motor Works – Premium American-Made eBike Batteries. Engineered for Power. Built to Last.