G70 Hailong 52V 15Ah 21700 Lithium Ion Ebike Battery Pack
Summary of Hailong 52V 15Ah 21700 Battery Pack
The Hailong 52V 15Ah 21700 Lithium-Ion E-Bike Battery Pack is built for riders who demand maximum energy, efficiency, and reliability. Featuring 5000mAh 21700 cells, this battery delivers an impressive 780Wh of total energy—the highest possible capacity achievable in the standard Hailong G70 casing. Designed with low internal resistance, high charge/discharge efficiency, and a smart BMS with full protection features, it supports up to 20A continuous discharge—perfect for 1000W e-bikes.
With customizable voltage, capacity, and discharge options, 4-level LED power indicator, and a sturdy anti-theft case, this battery offers the ideal combination of performance, safety, and versatility for any modern e-bike setup.
Hailong Battery 52V 15Ah Parameters
Battery Model: INR21700 14S3P
Battery Type: Lithium-ion Battery
Battery Cell: 21700 5000mAh
Nominal Voltage: 52V
Charge Voltage: 58.8V
Cut-off Voltage: 37.8V
Nominal Capacity: 15Ah
Minimum Capacity: 14.5Ah
Energy: 780Wh
Max Continuous Discharge Current: 20A
Peak Discharge Current: 40A
Max Charge Current: 5A
Cycle Life: ≥500 Cycles @80% DOD
Weight: 3.8kg
Size: 90.5*109.6*367.5mm
Charging Temperature: 0°C to 50°C
Operating Temperature: -20°C to 65°C
Storage Temperature:
- -20℃~25℃: 12 months
- -20℃~45℃: 3 months
- -20℃~60 ℃: 1 month
Key Features – Ebike Battery 52V 15Ah
🔋Exceptional Energy Density – Up to 780Wh
Powered by high-capacity 21700 5000mAh lithium cells, this pack offers one of the highest energy levels in its class. This configuration achieves the maximum possible energy under the Hailong G70 shell, setting a new standard for compact e-bike batteries.
Total energy: 52V × 15Ah = 780Wh
Longer riding distance per charge
Perfect for long-range commuters and performance riders
🌡️Low Internal Resistance & High Efficiency
Engineered for optimal conductivity and thermal control:
Low internal resistance ensures stable voltage output
Minimal heat generation during discharge
Higher charge/discharge efficiency, extending battery life
🛡️ Advanced Protection Board (BMS) for Complete Safety
Integrated Battery Management System (BMS) includes:
Overcharge & Overdischarge protection
Overcurrent & Short circuit protection
Overtemperature protection
This ensures safe operation, even during heavy loads or extreme conditions, protecting both the rider and the e-bike.
🚴 Powerful Output – Up to 1000W Motor Support
With a 20A continuous discharge rate, this battery can handle:
Up to 1000W motors with ease
Smooth, consistent power delivery for acceleration and hill climbing
Excellent balance between power and runtime
Ideal for city e-bikes, mountain bikes, and high-torque models.
⚙️Fully Customizable Design
Tailor your power pack to meet your exact needs:
Available in 36V, 48V, and 52V configurations
Choose 18650 or 21700 cells for different capacities
Custom BMS discharge current, connectors, and power ratings
💡Built-in 4-Level LED Power Indicator
Stay informed at a glance, Never run out of power unexpectedly on your rides.
Four LED lights show real-time charge status
Quick visual reference for battery level and maintenance planning
🧱 Robust Hailong G70 Case with Anti-Theft Lock
Durable and secure by design:
Constructed from high-strength ABS + aluminum shell
Integrated lock mechanism prevents theft
Mounted on the downtube for low center of gravity, improving stability and comfort
❓Frequently Asked Questions (FAQ)
Q1: What type of cells are used in this battery?
A: The pack uses premium 21700 5000mAh lithium-ion cells, known for high energy density and low resistance.
Q2: Is it compatible with my e-bike?
A: Yes. The Hailong G70 casing fits most downtube-mounted e-bike frames and supports common controller voltages (36V, 48V, or 52V).
Q3: What is the maximum motor power it supports?
A: Supports up to 1000W motors, making it ideal for high-performance e-bikes.
Q4: Can I customize the voltage and capacity?
A: Custom options are available for different voltages (36V, 48V, 52V) and capacities using 18650 or 21700 cells.
Q5: Is it waterproof?
A: The Hailong G70 case is water-resistant, providing protection against rain and splashes. Avoid full submersion for best longevity.
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