BAK N21700CX-65E 21700 6500mAh Li-ion Battery Cell
The BAK N21700CX-65E 21700 6500mAh battery is a high-capacity cylindrical lithium-ion cell from Zhengzhou BAK Battery. It offers 6500mAh typical capacity, 3.5V nominal voltage, and a long cycle life of 501 cycles with ≥80% capacity retention.
Large stock available. Competitive wholesale pricing for bulk orders.
Key Benefits
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6500mAh typical capacity, 6350mAh rated – high energy for longer runtime.
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501 cycle life: ≥80% capacity after 501 cycles at 0.5C charge / 1C discharge.
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12.7A fast charge (2C max), 19A max discharge (3C).
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Low AC impedance: ≤8mΩ at 1kHz.
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Wide temperature range: discharge from -20°C to 60°C.
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Safety tested: overcharge, forced discharge, 57°C short circuit, crush, drop, impact, thermal shock, low pressure, vibration. No fire, no explosion.
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BAK brand quality and traceability.
Key Specifications
| Item | Specification |
|---|---|
| Model | N21700CX-65E |
| Brand | BAK (Zhengzhou BAK Battery) |
| Rated capacity | 6350mAh |
| Typical capacity | 6500mAh |
| Nominal voltage | 3.5V |
| Rated energy | 22.23Wh |
| Typical energy | 22.75Wh |
| Charge limit voltage | 4.20V |
| Discharge cut-off voltage | 2.5V (min 2.0V) |
| Standard charge | 3175mA CC-CV, 100mA cut-off |
| Standard discharge | 1270mA CC to 2.5V |
| Max charge current | 12.7A |
| Max discharge current | 19.05A |
| AC impedance | ≤8mΩ |
| Weight | ≤75g |
| Dimensions | Max 21.7mm diameter x 71.0mm height |
| Operating temperature | Charge: 0–45°C; Discharge: -20–60°C |
| Cycle life | ≥80% after 501 cycles (0.5C charge / 1C discharge) |
| Shipment voltage | 3.40–3.60V |
Typical Applications
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High-capacity battery packs
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Energy storage systems
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E-bikes and LEVs
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Power tools
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Backup power
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Custom 21700 battery packs
Wholesale BAK 21700 Cells in Stock
We supply BAK N21700CX-65E cells to overseas buyers, distributors, and OEM manufacturers. If you need a stable 21700 battery supplier for repeat orders or bulk production, we offer large stock and competitive pricing.
FAQ
What is the BAK N21700CX-65E?
It is a 21700 6500mAh battery with 3.5V nominal voltage, designed for high-capacity applications.
How long does it last?
Tested to 501 cycles at 0.5C charge / 1C discharge, with ≥80% capacity retention.
What is the max discharge current?
19.05A continuous, with an 80°C temperature cut-off.
Is it the same size as standard 21700?
It measures max 21.7mm diameter and max 71.0mm height, slightly larger than some standard 21700 cells.
Do you offer wholesale pricing?
Yes. Pricing depends on quantity, destination, and order terms. Contact us for current bulk pricing.
Request a Quote
Send your target quantity, application, and delivery country. We will reply with current price, stock availability, MOQ, and lead time.
🌐 Website: www.becellbattery.com
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