BHL21700-5000-HR High-Rate Low-Temperature Lithium-Ion Cell | Features & Applications
Ⅰ. Core Product Advantages
1. Extreme Wide-Temperature Discharge with Stable High and Low Temperature Performance
Operating temperature range: charging 0℃~45℃, discharging -40℃~55℃.
The cell retains ≥95% capacity at 55℃ high temperature, delivers full rated capacity at 25℃ room temperature and maintains 95% capacity at 0℃, while keeping no less than 80% capacity under -40℃ extreme cold conditions. No external heating module is required, enabling direct operation of outdoor equipment in northern winters, polar regions and cold storage environments. It effectively simplifies the overall thermal control structure and reduces equipment R&D costs.
2. 5000mAh Large Capacity & 10C High-Rate Continuous Output
The 21700 large-size design delivers an ultra-high capacity of 5000mAh for significantly extended single-cycle endurance. It supports 10C continuous high-rate discharge with sufficient instantaneous peak current to meet the instant high-power startup demands of various devices. With specially optimized internal conductive structure, the cell surface temperature is controlled below 60℃ during charging and ≤70℃ during discharge. It resists aging under long-term frequent pulse operation, balancing durable endurance and powerful instantaneous output performance.。
3. 1000 Stable Cycles & Low Self-Discharge for Maintenance-Free Operation
The cell maintains over 80% rated capacity after 1000 standard charge-discharge cycles and retains sufficient residual capacity after 30-day full-charge static storage at room temperature with ultra-low self-discharge rate. For long-term storage, a 10%~35% state of charge is recommended. It only requires occasional supplementary charging after one-year storage at -20℃~35℃, making it ideal for unattended and intermittently operated high-power field equipment and reducing inspection and replacement frequency.
4. Full-Scale Strict Safety Certification with Zero Thermal Runaway Under Extreme Conditions
The cell has passed comprehensive rigorous safety tests including overcharge, deep overdischarge, external short circuit, 135℃ thermal shock, high-low temperature alternation, three-axis swept vibration and six-direction drop, with zero fire or explosion throughout all tests. The integrated silver-gray steel shell provides excellent extrusion and impact resistance. Matched with a dedicated protection board, it achieves triple protection against overcharge, overdischarge and overcurrent, fully complying with safety standards for military-grade and industrial high-power equipment.
5. Standard 21700 Specification for Efficient Bulk PACK Assembly
Adopting universal standard 21700 dimensions of 21.4×70.3mm with a single-cell weight ≤68g, cells from the same batch feature voltage difference ≤20mV, minor internal resistance deviation and internal PACK temperature difference ≤5℃. Only resistance welding and laser welding are permitted, while tin welding is prohibited. It supports flexible series-parallel configuration and adopts standard 100-piece shockproof inner box packaging. No customized molds are required, greatly improving mass production and assembly efficiency for equipment manufacturers.
Ⅱ. Industry Application Scenarios
High-Power RC Models & Surveying UAVs
The 10C high-rate discharge perfectly meets the high-current instantaneous takeoff demand, while the 5000mAh large capacity effectively extends flight duration. It maintains stable power output without power attenuation at -40℃, suitable for cold-region surveying and industrial drone applications.
Low-Temperature Vehicle Emergency Starting Power
The large-capacity energy reserve supports one-click vehicle ignition in extreme cold winters and delivers stable short-term high-power output, serving as an ideal backup starting module for northern RVs and engineering vehicles.
Industrial Pulse High-Power Equipment
Applicable to low-temperature impact wrenches, cutting equipment and portable high-power mining detectors. It maintains stable cycle performance under frequent start-stop conditions and operates reliably in cold storage and outdoor factory environments.
Polar & Cold-Region High-Power Energy Storage Equipment
Ideal for high-power field monitoring base stations and large-capacity energy storage power supplies for winter camping. It supports all-weather operation across high and low temperatures and reduces maintenance costs with low self-discharge performance.
Individual High-Power Emergency Equipment
Suitable for low-temperature rescue lighting and outdoor high-power rescue devices. Combining large capacity and high-current output, it provides sufficient endurance for long-term outdoor duty missions.
Ⅲ. Product Summary
The BHL21700-5000-HR features core competitive advantages of 5000mAh ultra-large capacity, 10C continuous high-rate discharge and stable -40℃ ultra-low-temperature performance. It also integrates five key strengths: 265Wh/kg high energy density, 1000-cycle long service life, full-range safety protection, superior weather resistance and universal 21700 standard size. Custom-developed for high-power low-temperature special equipment, it is equipped with complete charge-discharge specifications, professional PACK assembly guidelines and one-year process warranty, serving as the optimal lithium cell solution for large-capacity high-rate low-temperature applications.
