Hailong Polly E-Bike Battery 36V/48V (13Ah - 25Ah) | Long Range Lithium Pack for 250W-1500W Motors | Fits Bafang BBS01/BBS02
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Includes all key accessories and simple setup instructions for quick start!
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Delivery 5 To 8 Days
Power your commute or off-road adventure with the Hailong Polly Series Electric Bike Battery. Designed for versatility and longevity, this lithium-ion battery pack is the perfect upgrade or replacement for your e-bike build. Whether you are running a 250W commuter or a powerful 1500W off-road beast, we have a voltage and capacity configuration to match your motor.
Key Features:
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Universal Compatibility: Engineered to work seamlessly with popular mid-drive and hub motors, including Bafang BBS01, BBS02, and Tongsheng conversion kits.
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Premium Cell Options: Choose between high-value standard cells or premium Panasonic/Samsung/LG (18650/21700) cells for maximum energy density and lifespan.
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Smart Battery Management System (BMS): Built-in protection prevents overcharging, over-discharging, short circuits, and overheating, ensuring a safe ride every time (20A - 30A continuous discharge depending on model).1
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Durable Hailong Case: The sleek, water-resistant Polly case mounts securely to your bike's downtube, keeping the center of gravity low for better handling. Includes a locking mechanism to prevent theft.
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Easy Charging: Includes a dedicated charger (42V or 54.6V) to get you back on the road quickly.
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Long Cycle Life: Rated for 800-1000 charge cycles, providing years of reliable service.2
What's in the Box?
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1x E-Bike Battery (Hailong Polly Case)
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1x Battery Mount/Base Plate
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1x Charger (US Plug/region specific)
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2x Keys
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User Manual
Technical Specifications
| Feature | Specification |
| Voltage Options | 36V / 48V |
| Capacity Options | 10Ah - 25Ah (Configurable) |
| Cell Type | 18650 or 21700 Lithium-Ion |
| Cell Brand Options | Generic (G2500/G3000) or Panasonic/TSL |
| Compatible Motor Power | 250W / 350W / 500W / 750W / 1000W / 1500W |
| BMS Continuous Current | 20A (36V) / 30A (48V/52V) |
| Charger | 42V 2A (for 36V) / 54.6V 2A (for 48V) |
| Cycle Life | 800 - 1000 Cycles |
| Operating Temp | -20°C to 65°C |
| Dimensions | Approx. 360 x 90 x 90mm (varies by capacity) |
| Weight | 3.0kg - 4.5kg |
| Certification | CE |
