7.2V 4200mAh Ultra-Low Temp Li-ion 21700 Battery

Polar Research Equipment Power Solution

Designed for extreme cold environments, this 7.2V 4200mAh Li-ion battery powers scientific instruments, data loggers, and sensor arrays in Polar research. Its -40°C operating capability ensures reliable performance in sub-zero conditions, critical for long-term field studies.

Frigid Zone Rescue Gear Energy Source

Ideal for emergency beacons, portable heaters, and communication devices in frigid zone rescue missions. The battery’s ultra-low temperature resilience (-40°C) and fast-charging support enable rapid deployment in life-saving scenarios.

Cold Zone Industrial & Medical Devices

Optimized for low-temperature industrial tools, outdoor sensors, and medical equipment (e.g., defibrillators) in cold climates. The 21700 cell design ensures stable energy output even during prolonged use in harsh conditions.

Technical Advantages

• Ultra-Low Temperature Resilience: Operates reliably at -40°C, outperforming standard Li-ion batteries.
• High-Capacity & Fast Charging: 4200mAh capacity with 8.4A max charge current for rapid energy replenishment.
• BMS Protection: Built-in safety management for overcharge/discharge protection (customizable upon request).
• Lightweight & Compact: 150g weight and 46x90x25mm dimensions for easy integration into portable devices.
• Long Cycle Life: 500 cycles at 25°C with 80% capacity retention, ensuring cost-effective long-term use.

Why Choose This Battery?

• Extreme Environment Reliability: Engineered for Arctic research, rescue missions, and cold-zone industrial applications.
• Optimized Energy Density: 535 Wh/l volumetric density ensures high power in minimal space.
• Durable Performance: Withstands high discharge currents (45A continuous) for power-intensive equipment.
• Lower Self-Discharge: Maintains charge during storage, critical for emergency backup systems.