🔋 36V 48V 52V Hailong eBike Battery – 15Ah & 20Ah  

Powerful, Long-Lasting Battery for Bafang & Custom eBike Builds

Give your eBike the power it needs with a Hailong-style lithium-ion battery available in 36V, 48V, and 52V configurations with 15Ah or 20Ah capacity options.

Designed for compatible eBike systems and popular Bafang BBS02, BBS03, and BBSHD motor setups, this battery is a practical choice for commuters, trail riders, delivery riders, and custom eBike builders.

⚡ Choose Your Voltage & Capacity

Available configurations include:

• 36V 15Ah

• 36V 20Ah

• 48V 15Ah

• 48V 20Ah

• 52V 15Ah

• 52V 20Ah

The higher-capacity 20Ah options provide more stored energy than the 15Ah versions when comparing batteries at the same voltage.

🔋 Hailong Lithium-Ion Battery

The Hailong-style battery design provides a convenient solution for many eBike applications while keeping the battery securely mounted to the bike.

Features

✅ 36V, 48V & 52V options
✅ 15Ah & 20Ah capacity options
✅ Lithium-ion battery technology
✅ Hailong-style battery housing
✅ Compatible with selected Bafang motor systems
✅ Designed for eBike and electric mobility applications
✅ Suitable for commuting, recreation, and custom builds
✅ CE-certified according to the supplied specifications

🚲 Compatible Bafang Motors

This battery is listed for use with:

• Bafang BBS02

• Bafang BBS03

• Bafang BBSHD

Other Applications

The supplied specifications also list applications including:

• Electric bicycles

• Electric scooters

• Scooters

• RV applications

• Trolling motors

• Custom electric builds

Compatibility depends on the complete electrical system. Always verify voltage, connector type, mounting dimensions, controller requirements, and battery specifications before ordering.

📋 Product Specifications

🔧 Before You Order

Please verify that the battery matches your eBike system.

Check:

Voltage: 36V, 48V, or 52V
Capacity: 15Ah or 20Ah
Motor: Confirm compatibility with your Bafang system
Connector: Make sure the battery connector matches your controller
Mounting: Compare the Hailong mounting system and dimensions with your existing setup
Charger: Use a charger specifically designed for your battery's voltage and chemistry

⚠️ Important: Do not select a battery based on motor wattage alone. Your battery voltage must be compatible with your controller and motor system.

🔋 Power Your Next Ride

Whether you're upgrading an existing eBike, replacing an aging battery, or building a custom electric bike, this Hailong lithium-ion battery gives you multiple voltage and capacity options to match your project.

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Power Your Ride. Charge Anywhere. Ride Longer.

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Dear customers and friends,

Hello! Welcome to our shop:

*The battery in this store supports proxy purchasing/wholesale/group purchase!

*If you need preferential prices, please pay attention to our store and contact customer service to inform your needs; we will try our best to give you the biggest discount!

Hailong E-Bike Battery 36V 48V 52V 20Ah 30Ah BMS Electric Bicycle Downtube Lithium Battery Pack for 1000W 750W 500W 250W Motor

Lithium battery features:

1. The service life is twice as long as that of lead-acid batteries, and the weight is lighter

2. No memory effect, rechargeable, longer battery life

3. Safer and more environmentally friendly, free of heavy metals and harmful substances.

4. The built-in IC chip can prevent the battery pack from overcharging, overdischarging, overcurrent, overheating, and short circuits.

5. Avoid mechanical accidents caused by vibration.

Electric bicycle battery specifications:

Model: Sea Dragon

Nominal voltage: 36V/48V/52V

Nominal capacity: 15Ah/20Ah

Battery color: black

Applicable motor: 200w 250w 350w 500w 750w 1000w

Battery size: 370*90*110mm ±0.2mm

Standard discharge: 15A-30A, 15-30A continuous 60A peak

Battery management system functions: overcurrent protection, overdischarge protection, overcharge protection, short-circuit protection, balancing.

Lithium battery features :

1. High energy density, fast charging.

2. Lightweight, small size, no pollution, and environmental protection.

3. Long cycle life; it extends its cycle life to 600-800 cycles.

4. With a short-circuit protection function, safe and reliable.

5. Large overcharge tolerance, good safety performance, and longer battery life.

6. Simplifies the battery management system (BMS, such as overcharge/discharge, overcurrent, short circuit, overtemperature, and balancing) and battery charger.

Precautions :

1. Do not reverse the positive and negative poles.

2. Do not connect the battery poles to the power outlet.

3. Do not throw the battery into a fire or heater.

4. Do not use or place the battery near heat sources such as fire or heaters.

5. Do not short-circuit, overcharge, or overdischarge the battery pack.

6. Do not knock, step on, or throw the battery.

7. Do not directly solder the battery or pierce the battery with nails or other sharp objects.

8. Do not directly connect the positive and negative poles with metal objects to short-circuit the battery.

9. Do not transport or store the battery together with hairpins, necklaces, and other metal objects.

10. When charging, use a dedicated charger, constant current constant voltage (CC/CV) lithium-ion (Li+) battery charge controller.

11. Do not immerse the battery in water or seawater, and store the battery in a cool and dry environment for backup.

12. If it is left for a long time, it is recommended that the battery be charged regularly (even if it is not used), and it must be charged at least once every three months.

【 About Logistics 】

1. Some delivery logistics methods of our store are not displayed in the order details. You can check the tracking information on this website at https://www.17track.net/zh-cn /;

As the battery is a special product, we will choose different channels to send the package according to your purchase order amount or product weight (some channels have no tracking information).

2. Due to the different shipping channels in different countries, the delivery time will vary. Generally, you can receive the goods within 10-50 days. If you can't find the tracking information, please contact online customer service. Do not worry!

IMPORTANT NOTICE: Please do not give us bad reviews. Please contact our customer service as soon as possible before giving us a bad review. We will try our best to help you solve this problem!

If you are satisfied, please give us five-star praise and encouragement. Thank you very much!

The capacity of our product is 15 - 40ah. The certification is CE. The product is original from CN (origin).

 36V, 48V, 52V Hailong: the best ebike battery you can find on the market; the ebike battery will never be out of date.

 To provide more power and speed for your electric bicycle. No need to worry about overcharging, over-discharging, overcurrent, and short circuits.

Durable:

The battery is made of high-quality ABS material, which is durable and has a long service life. 

Excellent packaging, excellent communication with the seller. overall good battery.

Feel free to reach out if you have any more questions or need further information. We look forward to providing you with exceptional products and service to enhance your electric bike experience.