The 21700 3.6V 6500mAh Low-Temperature Lithium-Ion Cell is a high-capacity rechargeable battery specially engineered for reliable performance in extreme cold environments. Utilizing advanced low-temperature electrolyte technology and optimized internal materials, this lithium-ion cell maintains stable discharge efficiency and power output even under freezing conditions.

With its large 6500mAh capacity, high energy density, and excellent low-temperature performance, the battery is ideal for outdoor electronic equipment, energy storage systems, intelligent monitoring devices, and other products operating in harsh climates.

• High capacity of 6500mAh for extended operating time
• Excellent low-temperature discharge performance
• Stable voltage output
• High energy density with compact 21700 cylindrical design
• Low internal resistance and high efficiency
• Low self-discharge rate
• Reliable safety performance and thermal stability
• Suitable for continuous and high-load applications

• Wildlife monitoring cameras
• GPS tracking devices
• Outdoor communication equipment
• Cold-region solar energy systems
• Portable power stations
• Medical devices in low-temperature environments
• Smart sensors and industrial monitoring systems
• Electric transportation: Electric motorcycles, EV, electric scooters, electric bicycles

At time of shipment, the cells' state of charge shall be 20±10% of its rated capacity or less. The violent vibration, impaction or squeezing should be avoided in the transport process; neither is exposed in the sunlight nor rain. The cells shall be shipped by normal transportation such as by road, by ocean or by air.

Storage temperature and humidity (within 3 months):
Cells should be stored in a stable environment characterized by low-humidity (less than 70% RH), free of corrosive gasses, and an ambient temperature between -20℃ and 40℃. To prevent rust, avoid conditions that can create condensation such as rapid fluctuations in the ambient.

Long duration storage:
When long duration storage cells should be stored in a stable environment characterized by low-humidity (less than 70% RH), free of corrosive gasses, and an ambient temperature between 0℃ and 20℃.