21700 5500mAh Rechargeable Lithium Ion Battery Cell 3.636V High Capacity Cylindrical Cell
21700 5500mAh Rechargeable Lithium Ion Battery Cell
This 21700 cylindrical lithium-ion battery cell is designed for professional battery pack development and integration projects. With a nominal voltage of 3.636V and a minimum standard discharge capacity of 5500mAh, it provides a high-capacity cell option for compatible rechargeable battery applications.
The cell features a 4.2V charging voltage, CC-CV charging method and an initial AC impedance of no more than 15mΩ under the specified test conditions. Its defined discharge capability includes up to 2C continuous discharge and 3C non-continuous discharge, subject to the cell specification and application conditions.
Key Product Features
- 21700 cylindrical cell format
- Minimum 5500mAh standard discharge capacity
- 3.636V nominal voltage
- 4.2V charging voltage
- CC-CV charging method
- Maximum 2C continuous discharge rate
- Maximum 3C non-continuous discharge rate
- Initial AC impedance: 15mΩ maximum
- Maximum cell weight: 74g
- Maximum dimensions: Ø21.78 × 71.00mm
Battery Pack Integration
This cell can be evaluated by professional battery pack manufacturers and system integrators for suitable lithium-ion battery projects. Final application suitability depends on pack configuration, current requirements, thermal management, protection design and supplier approval.
B2B Project Cooperation
YIFANG welcomes inquiries from battery pack manufacturers, distributors and industrial customers. Please provide your target application, required quantity, battery pack specifications and project timeline for technical evaluation.
| Specifications | Details |
|---|---|
| Product Type | Rechargeable Lithium-ion Cell |
| Cell Format | 21700 Cylindrical |
| SDI Model in Source Document | CC5563F101 (Ver. A) |
| Nominal Voltage | 3.636V |
| Standard Discharge Capacity | Min. 5500mAh |
| Charging Voltage | 4.2V |
| Standard Charging Current | 0.2C |
| Maximum Charging Current | 1C |
| Charging Method | CC-CV |
| Charging Time | 7 hours (standard charge) |
| Discharge Cut-off Voltage | 2.50V |
| Maximum Continuous Discharge Rate | 2C |
| Maximum Non-continuous Discharge Rate | 3C |
| Initial AC Impedance | Max. 15mΩ |
| Maximum Cell Weight | 74g |
| Maximum Diameter | 21.78mm |
| Maximum Height | 71.00mm |
| Charging Temperature | 0°C to 45°C |
| Discharging Temperature | -20°C to 60°C |
| Cycle Test Reference | Min. 4136mAh after 500 cycles under specified test conditions |
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21700 5500mAh Rechargeable Lithium Ion Battery Cell
This 21700 cylindrical lithium-ion battery cell is designed for professional battery pack development and integration projects. With a nominal voltage of 3.636V and a minimum standard discharge capacity of 5500mAh, it provides a high-capacity cell option for compatible rechargeable battery applications. The cell features a 4.2V charging voltage, CC-CV charging method and an initial AC impedance of no more than 15mΩ under the specified test conditions. Its defined discharge capability includes up to 2C continuous discharge and 3C non-continuous discharge, subject to the cell specification and application conditions.Key Product Features
- 21700 cylindrical cell format
- Minimum 5500mAh standard discharge capacity
- 3.636V nominal voltage
- 4.2V charging voltage
- CC-CV charging method
- Maximum 2C continuous discharge rate
- Maximum 3C non-continuous discharge rate
- Initial AC impedance: 15mΩ maximum
- Maximum cell weight: 74g
- Maximum dimensions: Ø21.78 × 71.00mm
Battery Pack Integration
This cell can be evaluated by professional battery pack manufacturers and system integrators for suitable lithium-ion battery projects. Final application suitability depends on pack configuration, current requirements, thermal management, protection design and supplier approval.B2B Project Cooperation
YIFANG welcomes inquiries from battery pack manufacturers, distributors and industrial customers. Please provide your target application, required quantity, battery pack specifications and project timeline for technical evaluation.Product Benefits
1. High Capacity in a 21700 Format
With a minimum standard discharge capacity of 5500mAh, this cylindrical cell provides a high-capacity option for compatible battery pack designs.
2. Defined Electrical Performance
The 3.636V nominal voltage and 4.2V charging voltage provide clear electrical parameters for battery pack engineering.
3. Low Initial AC Impedance
The initial AC impedance is specified at a maximum of 15mΩ, measured under the conditions stated in the product specification.
4. Defined Discharge Capability
Supports up to 2C continuous discharge and 3C non-continuous discharge under specified conditions, helping engineers evaluate current requirements during pack design.
5. Compact Cylindrical Structure
The 21700 format, with a maximum diameter of 21.78mm and maximum height of 71.00mm, supports integration into compatible cylindrical cell battery packs.
6. Professional Battery Pack Evaluation
Suitable for technical evaluation by battery pack manufacturers and system integrators. Final use requires appropriate BMS, thermal management and safety protection design.
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What products does YiFang offer?
YiFang specializes in batteries, chargers, battery packs, and power solutions, including Li-ion, LiMn (IMR), Ni-MH, and LiFePO₄ batteries.
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Yes, we offer flexible OEM and ODM customization, including product design, specifications, and packaging to meet your exact requirements.
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Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
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What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What warranty and after-sales support does YiFang offer?
We provide 6–12 months warranty, responsive customer support, and global insurance coverage for long-term reliability and customer peace of mind.
