BHL18650-3500 Low-Temperature Lithium-Ion Cell | Features & Applications
Ⅰ. Core Product Advantages
The BHL18650-3500 is a standard 18650 steel-shell high-capacity low-temperature power cell, specially developed for high-power low-temperature equipment. It integrates large capacity, 6C high-rate output and stable discharge performance from room temperature down to -20℃, effectively solving common industry pain points of conventional lithium batteries, including low-temperature capacity loss, excessive heat generation under high-power operation and poor durability in outdoor harsh conditions.
Basic Parameters: Rated 3.7V/3500mAh with an energy density of 264Wh/kg in a universal standard 18650 dimension. It supports 6C high-rate discharge with a maximum continuous discharge current of 21A and adopts 0.2C CC/CV standard charging. Equipped with a depleted cell pre-charging mechanism, the cell delivers excellent batch consistency and controllable internal temperature difference after PACK assembly.
1. Stable Output at -20℃ with Balanced High-Low Temperature Performance
Operating temperature limits: charging 0℃~40℃, discharging -20℃~55℃.
The cell retains ≥95% capacity at 55℃ high temperature, releases full rated capacity at room temperature and maintains 95% capacity at 0℃, while reserving over 80% capacity at -20℃ low temperature with a low-temperature discharge cut-off voltage of 2.3V. No additional heating components are required, enabling reliable operation for winter outdoor and northern open-air equipment and reducing overall thermal control costs.
2. 6C Ultra-High Rate & 21A Continuous High-Power Discharge
Supporting 6C high-rate discharge and up to 21A continuous high current, the cell features strong instantaneous load capacity to meet the instant high-current demands of power tools, high-power energy storage and vehicle starting equipment. Optimized internal conductive structure ensures controllable temperature rise under high-current operation, with surface temperature below 60℃ during charging and ≤70℃ during discharge, effectively preventing accelerated aging during long-term high-power operation.
3. Large Capacity with Stable Cycle Performance & Low Self-Discharge
The 3500mAh high capacity greatly extends single-operation endurance of equipment. It maintains over 80% rated capacity after 600 standard charge-discharge cycles and retains ≥85% residual capacity after 30-day full-charge static storage at room temperature. The ultra-low self-discharge rate eliminates frequent supplementary charging for long-term idle equipment, making it ideal for intermittently operated outdoor and industrial devices.
4. Multiple Safety Certifications for Reliable Performance in Harsh Conditions
The cell has passed comprehensive safety tests including overcharge, deep overdischarge, external short circuit, 135℃ thermal shock, high-low temperature alternation, three-axis vibration and six-direction drop, with zero fire and explosion throughout all tests. The integrated 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 industrial and outdoor equipment.
5. Superior Weather Resistance & Convenient Standardized Assembly
After 10~55Hz three-axis vibration, 40℃/95RH damp-heat and 1-meter drop tests, the cell presents no deformation or liquid leakage and retains over 95% capacity. Cells from the same batch feature voltage difference ≤20mV, minor internal resistance deviation and internal PACK temperature difference ≤5℃. Adopting universal 18650 specifications with standard inner box packaging of 100 pieces, the cell supports only resistance welding and laser welding. Flexible series-parallel design requires no customized molds, ensuring high efficiency for mass PACK production.
Ⅱ. Industry Application Scenarios
Northern Outdoor High-Power Electric Tools：Suitable for winter lithium wrenches, electric drills and garden power equipment. It delivers stable 6C high-rate output and normal power performance at -20℃, with large capacity extending single-operation working duration.
Outdoor Portable Energy Storage & Vehicle-Mounted Power Supplies：Ideal for camping energy storage, RV parking power supplies and small vehicle-mounted emergency starting power sources. High energy density reduces equipment volume and ensures stable power supply for outdoor winter scenarios.
Low-Temperature Industrial Detection Equipment：Applied to inspection instruments for northern factories, open-air monitoring terminals and cold chain supporting handheld devices. Featuring high and low temperature resistance and low self-discharge, it effectively reduces maintenance frequency.
Lightweight Special Power Supply Equipment：Perfect for field lighting, portable emergency power supplies and small surveying equipment. The high-power performance supports instantaneous load demands and adapts to winter field operating environments.
Civilian High-Power Energy Storage Modules：Used for household backup energy storage and small photovoltaic supporting batteries. The standardized 18650 size lowers assembly costs while ensuring high safety performance.
Ⅲ. Product Summary
The BHL18650-3500 low-temperature cell features core competitive advantages of 3500mAh large capacity, 6C high-rate discharge and stable -20℃ low-temperature performance. It also integrates five key characteristics: 264Wh/kg high energy density, 600-cycle long lifespan, full-range safety protection, superior environmental weather resistance and universal 18650 standard size. Custom-developed for northern outdoor high-power equipment, electric tools and portable energy storage devices, 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 high-capacity low-temperature high-power applications.
