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Lishui Town, Foshan, Guangdong, China
7.2V 9Ah 21700 Li-ion Battery for Ultra-Low Temp Operation
- 7.2V output with 9Ah high capacity
- -40°C to 55°C operating range
- 1.5-hour fast charging
- Integrated BMS for safety
- Lightweight (300g) and compact (48x155x24mm)
- 500-cycle lifespan
Specification
| Parameter | Battery Specification | Cell Specification |
|---|---|---|
| Capacity | 9000mAh (9Ah) | 4500mAh (per cell) |
| Voltage | 7.2V | 3.6V (nominal) |
| Dimensions | 48x155x24mm | 21700 standard size |
| Weight | 300g | – |
| Operating Temp | -40°C to 55°C | -40°C to 60°C (discharge) |
| Cycle Life | 500 cycles (25°C) | – |
| Max Discharge Current | – | 45A (45°C cutoff) |
| Impedance | – | 7mΩ (AC), 15mΩ (DC) |
| Energy Density | – | 643 Wh/L (volumetric) |
Application
Extreme Cold Climate Research Equipment
Ideal for Arctic expeditions, glacial environment sensors, and polar research instruments requiring stable power in temperatures as low as -40°C. Enhances data collection reliability in sub-zero conditions.Emergency Rescue Gear for Frigid Zones
Power source for life-saving devices, GPS trackers, and thermal imaging tools used in snowstorms, avalanche rescues, and sub-polar operations. Ensures uninterrupted performance during critical missions.Low-Temperature Industrial Monitoring Systems
Supports remote sensors, pipeline monitors, and automated machinery in cold storage facilities, oil rigs, and high-altitude installations. Built to endure harsh environments with minimal energy loss.Technical Advantages
- Ultra-Low Temp Resilience: Operates at -40°C to 55°C, outperforming standard Li-ion batteries.
- High Energy Density: 242 Wh/kg gravimetric density for compact, lightweight power.
- Fast Charging: Recharges in 1.5 hours (0.2–0.5C rate), reducing downtime.
- Advanced BMS: Built-in protection against overcharge, over-discharge, and short circuits.
- Lower Self-Discharge: Retains charge longer during storage, ideal for seasonal or intermittent use.
Why Choose This Battery?
- Proven Reliability: Tested in polar expeditions and industrial cold zones with 500+ cycles at 25°C.
- Safety-Certified: Robust BMS and 7mΩ AC impedance ensure stable discharge under extreme loads.
- Customizable Connectors: Options include X.54, P.54, DC5521, or tailored solutions.
- Eco-Friendly Design: Zero lead-acid components, compliant with global lithium battery standards.
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