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 Density242 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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