The 21700 Waterproof E-bike Battery for Hailong G80 Electric Bicycle is developed for electric bicycle manufacturers and distributors requiring a practical, reliable and easy-to-integrate power solution.
Designed with a detachable Hailong-style battery case, the pack allows convenient installation and removal for charging and maintenance. The integrated lock system improves security during daily riding, while the waterproof housing helps protect internal components from common outdoor conditions.
According to different riding requirements, Yideng can configure the battery pack with optimized 18650 and 21700 cylindrical cells to balance capacity, discharge performance and overall pack size.
| Model | Parameter | Permutation | Cell Capacity | Fit Motor Power | Dimensions |
| 48V20AH | 48V20AH | 13S4P | 21700-5AH | Below 1000W | 368×127×90mm |
| 48V21AH | 13S6P | 18650-3.5AH | Below 1000W | 368×127×90mm | |
| 48V17.5AH | 48V17.5AH | 13S5P | 18650-3.5AH | Below 1000W | 368×109×90mm |
| 48V20AH | 13S4P | 21700-5AH | Below 1000W | 368×109×90mm | |
| 36V 21AH | 36V 21AH | 10S6P | 18650-3.5AH | Below 1000W | 362×92×90mm |
| 48V14AH | 13S4P | 18650-3.5AH | Below 1000W | 362×92×90mm | |
| 52V14AH | 14S4P | 18650-3.5AH | Below 1000W | 362×92×90mm |
Unlike general lithium battery packs, 21700 Waterproof E-bike Battery for Hailong G80 Electric Bicycle is designed around the actual requirements of electric mobility equipment.
The detachable housing design improves user convenience, while the compact structure allows easier installation on different bicycle frames. The combination of 18650 and 21700 cells provides flexible energy configuration, helping manufacturers achieve different riding ranges and power requirements.
For commuting bicycles, mountain e-bikes and fat tire bikes, stable power output and reliable mechanical protection are essential. Yideng optimizes battery structure and cell arrangement according to application requirements to achieve better overall performance.
The built-in BMS continuously monitors battery operating conditions and provides protection functions including:
- Over-charge protection
- Over-discharge protection
- Over-current protection
- Short circuit protection
- Temperature protection
During acceleration, climbing and long-distance riding, the battery management system helps maintain stable discharge performance and improves overall battery safety.
Yideng provides customized e-bike battery solutions based on different vehicle designs and market requirements.
Customization options include:
- Battery voltage (36V / 48V / 52V)
- Capacity configuration
- Cell combination
- Connector type
- Communication interface
- Packaging design
From prototype samples to large-volume production, Yideng supports global e-bike manufacturers and distributors with complete battery development services.
- Parrot lithium batteries adopt a mixed assembly of 18650 and 21700 cylindrical cells, balancing compact layout, stable power output and energy density. They are most widely applied to electric bicycles including fat tire bikes and mountain e-bikes, supporting 36V, 48V and 52V drive systems for commuting and off-road travel. Besides, these battery packs fit electric scooters and lightweight electric motorcycles, delivering steady power during acceleration and climbing.
- They also serve portable outdoor equipment such as portable power stations and high-power garden power tools. Some customized versions can be used for inspection robots and small unmanned devices. The 18650 cells offer flexible arrangement for limited inner space, while 21700 cells boost overall capacity and continuous discharge performance. Equipped with intelligent BMS, the packs can meet diverse power demands of light electric mobility and outdoor portable devices, making them popular among OEM and ODM buyers.
We provide standard export carton packaging, and can also offer custom packaging solutions based on your specific requirements.
For shipping, we support multiple delivery methods.
International courier services such as UPS, DHL, FedEx and TNT are available, with an estimated delivery time of 3 to 15 working days. Air freight is another option, typically taking around 7 days in transit.
For larger or less urgent orders, ocean freight can be arranged, with a shipping period of approximately 30 days.
Once we receive your payment and confirm the final packaging plan, we will arrange shipment within 4 to 25 working days.
A1: Yideng can provide different voltage solutions including 36V, 48V and 52V versions according to motor systems and customer requirements.
A2: Yes. Yideng supports OEM customization including capacity configuration, connector selection, wiring design and battery structure adjustment.
A3: The battery adopts a waterproof housing design suitable for outdoor electric mobility applications. Specific waterproof levels can be customized according to project requirements.
A4: MOQ depends on battery specifications, customization requirements and order quantity. Sample orders are available for testing before bulk production.
A5: Yideng can configure the battery pack with selected 18650 and 21700 cylindrical lithium cells according to required capacity, discharge performance and application conditions.
A6: Yes. Yideng provides certification documents according to product requirements, including UN38.3, CE, RoHS, IEC62133 and other relevant compliance materials.
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Xin'an Village industrial Park, Yonglejiang Town, AnrenCounty, Chenzhou City, Hunan Province, China
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