3.6V 6500mAh Special Battery 21700 Cylindrical Lithium Ion Battery Cell -40℃ to 70℃
3.6V 6500mAh 21700 lithium-ion battery with ultra-wide -40℃ to 70℃ operating range, 8C discharge rate, 319Wh/kg energy density, and 1000-cycle lifespan. Ideal for industrial, outdoor, and extreme-temperature applications with custom BMS and pack solutions.
3.6V Special Battery
,6500mAh Special Battery
,21700 Cylindrical Lithium Ion Battery Cell
The 3.6V 6500mAh 21700 Lithium-Ion Cylindrical Battery Cell is a high-capacity rechargeable battery engineered for demanding applications requiring exceptional performance across extreme temperature environments. With an ultra-wide operating temperature range of -40℃ to 80℃, this advanced lithium-ion cell delivers reliable power output, high energy density, and long service life, making it ideal for outdoor, industrial, specialized field, and energy storage applications.
This battery utilizes high-quality electrode materials and advanced manufacturing technology, maintaining excellent charge and discharge performance under both low and high temperature conditions. Its robust design ensures stable operation in harsh climates where conventional lithium-ion batteries may experience significant performance degradation.
- Ultra-wide operating temperature range from -40℃ to 70℃
- Excellent low-temperature discharge performance
- Stable high-temperature operation and safety
- High energy density
- Reliable performance in extreme environments
- Suitable for high-demand industrial and outdoor applications
| Nominal Voltage | 3.6V | Cycle Life | 1000 cycles |
| Min. Capacity | 6370mAh | Typical Capacity | 6500mAh |
| Min. Energy | 22.2Wh | Typical Energy | 23.4Wh |
| End-of-charge Voltage | 4.2V | Discharge Cut-off Voltage | 2.5V |
| Max. Pulse Discharge Current | 100A (25±2℃, 50% SOC) | Max. Continuous Discharge Current | 52A (with 80℃ temperature cut) |
| Max. Continuous Charge Current | 8A | Cell Internal Resistance | ≤ 4.5mΩ |
| Charge Temperature | -10 to 60℃ | Discharge Temperature | -40 to 70℃ |
- Outdoor monitoring and surveillance systems
- Solar energy storage systems
- Industrial IoT devices
- Defense equipment
- GPS tracking devices
- Electric mobility solutions
- Unmanned aerial vehicles (UAVs)
- Extreme-weather communication devices
- Do not short-circuit, overcharge, crush, puncture, or disassemble the battery cell
- Keep away from fire, high heat sources, and direct sunlight
- Do not immerse the battery in water or expose it to moisture
- Stop using the cell immediately if swelling, leakage, overheating, or odor occurs
- Operate within the specified temperature range for safe performance
- Avoid using cells outside rated discharge current limits
- Extreme temperatures may reduce capacity or performance temporarily
- Ensure proper thermal management in high-load applications
- Always use a suitable Battery Management System (BMS)
- Ensure proper cell balancing in series/parallel configurations
- Do not bypass protection circuits
- Regularly inspect battery pack condition during use
With this high-capacity ultra-wide temperature 21700 lithium-ion battery cell, we provide complete energy solutions tailored to demanding industrial and outdoor applications.
We assemble customized battery packs based on your requirements, including voltage and capacity configuration, series and parallel cell combinations, and compact structural design for space optimization.
We provide Battery Management System integration to ensure overcharge and over-discharge protection, short-circuit and overcurrent protection, temperature monitoring, and balanced charging for longer cycle life.
We provide complete export support including UN38.3 test reports, MSDS documentation, safe transportation packaging, and global logistics support (air/sea/express).
We assist with cell selection and configuration guidance, thermal management recommendations, performance optimization for your application, and sample testing before mass production.
