N21700CX-65E 21700 Lithium-Ion Cell – 6500mAh, 3.5V, 22.75Wh
Looking for a reliable 21700 battery with high capacity and stable performance? The N21700CX-65E is a cylindrical rechargeable lithium-ion cell from ZhengZhou BAK Battery.
It delivers 6500mAh typical capacity, 3.5V nominal voltage, and 22.75Wh typical energy. This makes it a strong choice for 21700 battery packs, power tools, energy storage, and other high-capacity applications.
We have large stock available and offer competitive wholesale pricing. Contact us for current price, MOQ, and lead time.
Key Features
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High capacity: 6500mAh typical / 6350mAh rated
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Nominal voltage: 3.5V
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Typical energy: 22.75Wh
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Cycle life: ≥80% capacity after 501 cycles
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Rate discharge: 1C 100%, 2C ≥95%, 3C ≥90%
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Low internal resistance: ≤8mΩ
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Wide discharge temperature: -20°C to 60°C
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Safety tested: GB31241 and UL1642 test items
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BAK quality: stable and reliable cylindrical cell
Main Specifications
| Parameter | Specification |
|---|---|
| Model | N21700CX-65E |
| Cell type | Cylindrical lithium-ion rechargeable cell |
| Diameter | Max 21.7 mm |
| Height | Max 71.0 mm |
| Weight | ≤75 g |
| Rated capacity | 6350 mAh |
| Typical capacity | 6500 mAh |
| Nominal voltage | 3.5 V |
| Rated energy | 22.23 Wh |
| Typical energy | 22.75 Wh |
| Charging limit voltage | 4.20 V |
| Upper limit charging voltage | 4.25 V |
| End of discharge voltage | 2.50 V |
| Discharge cut-off voltage | 2.00 V |
| Standard charge current | 3175 mA |
| Standard discharge current | 1270 mA |
| Max charge current | 12700 mA |
| Max discharge current | 19050 mA |
| Internal resistance | ≤8 mΩ (AC 1000 Hz) |
| Charge temperature | 0°C to 45°C |
| Discharge temperature | -20°C to 60°C |
| Storage temperature | 1 year: -20~25°C; 3 months: -20~45°C; 1 month: -20~60°C |
| Humidity | 0~60% RH, non-condensing |
| Shipping voltage | 3.40~3.60 V |
Performance You Can Count On
The N21700CX-65E is tested under standard charge and discharge conditions at 25±2°C.
It offers stable capacity, low internal resistance, and good cycle life. After 501 cycles, it retains ≥80% of its original discharge capacity.
It also performs well at different discharge rates and temperatures. At 3C discharge, it still delivers ≥90% relative capacity. At -20°C, it delivers ≥80% relative capacity.
Safety and Compliance
This 21700 cell has been tested for key safety and environmental conditions, including:
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Short circuit
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Overcharge
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Forced discharge
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Low pressure
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Temperature cycling
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Vibration
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Shock
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Drop
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Crush
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Impact
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130°C hot oven
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Combustion injection
Tests reference GB31241 and UL1642. The cell is designed for safe use in proper battery packs with correct BMS and protection.
Packing and Shipping
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Small box: 130 pcs cells
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Big box: 1 small box per big box
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Pallet: available for bulk orders
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Shipping voltage: 3.40~3.60 V
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Long-term storage voltage: 3.40~3.60 V
Wholesale 21700 Cells – Large Stock, Competitive Price
We supply the N21700CX-65E 21700 lithium-ion cell at competitive wholesale prices.
If you need bulk 21700 batteries, stable supply, or a long-term partner for 21700 cells, we can help. Discounts are available for large orders.
Request a Quote
Ready to buy N21700CX-65E 21700 cells? Contact us now for:
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Wholesale price
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MOQ
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Stock availability
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Datasheet
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Shipping cost
We reply quickly with price and lead time.
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