Introduction and Application Guide for -40℃ Low-Temperature Lithium Batteries

Low-temperature lithium batteries can be categorized into high-temperature, low-temperature, and wide-temperature types based on their operating temperature range. Common cylindrical models include 18500, 18650, 21700, 26650, 26700, and 32700, while polymer models are even more diverse.  

Low-temperature lithium batteries are designed with special materials and manufacturing processes for extreme cold environments. They are widely used in national defense, aerospace, deep-sea equipment, polar research, exploration devices, cold-region emergency response, and heated clothing and footwear.

1. Features of Low-Temperature Lithium Batteries  

Low-temperature lithium batteries offer the following advantages:  

-  High Energy Density : Provides longer runtime.  

-  Excellent Room-Temperature Performance : Superior charge/discharge efficiency at normal temperatures.  

-  Low-Temperature Stability : Maintains high performance even at -40℃.  

-  High-Temperature Resistance : Stable performance in high-temperature environments.  

-  Long Lifespan : Durable and reduces replacement frequency.  

-  High Safety : Advanced technology ensures safe operation.  

-  Chemical Corrosion Resistance : Suitable for harsh environments.  

-  Eco-Friendly : Meets green energy standards.  

Technical Parameters :  

- Charging Temperature: 0℃~+45℃  

- Operating Temperature: -40℃~+55℃  

- Discharge Capacity at -40℃ (0.5C): ≥85%  

Applications :  

- Rugged Laptops  

- Special Industrial Computers  

- Polar Research Equipment  

- Emergency Response Devices in Cold Regions

2. Differences Between -40℃ Lithium Batteries and Room-Temperature Lithium Batteries  

Compared to room-temperature lithium batteries, -40℃ lithium batteries have the following unique advantages:  

1.  Simpler Charging Process : Designed for higher charging efficiency.  

2.  Higher Energy Density : Provides longer runtime, ideal for extended operations.  

3.  High Chemical Stability : Maintains stable performance in extreme cold.  

4.  Enhanced Safety : Suitable for high-demand applications such as vehicles and personal communication devices.  

3. How to Charge Correctly at -40℃  

Charging low-temperature lithium batteries in extreme cold requires special attention:  

1.  Voltage Drop Issue : A significant voltage drop occurs during charging in low temperatures, requiring specialized chargers.  

2.  Power Requirement Assessment :  

  - Regular lithium batteries offer 3-6 months of runtime, while low-temperature lithium batteries may only last 2 hours in extreme cold. Choose the appropriate model based on actual needs.  

3.  Charging Safety :  

  - Avoid charging in high-temperature environments to prevent internal chemical reactions that may damage the battery structure.  

  - Ensure the charger can withstand low temperatures to avoid equipment failure.  

4. Applications of Low-Temperature Lithium Batteries  

Low-temperature lithium batteries are widely used in the following fields:  

-  National Defense : Military equipment, aerospace power systems.  

-  Polar Research : Power supply for polar exploration devices.  

-  Emergency Response : Emergency power in cold regions.  

-  Industrial Equipment : Special industrial computers, rugged laptops.  

-  Consumer Electronics : Heated clothing and footwear.  

We specialize in providing high-performance, safe low-temperature lithium battery solutions to meet power needs in extreme environments.