7.2V 8.4Ah 18650 Ultra-Low Temp Lithium Battery (-40°C Operation)

  • Ultra-Low Temperature Operation (-40°C to 55°C)
  • High-Capacity 8.4Ah Lithium-Ion Design
  • Fast Charging with 0.2~0.5C Current Support
  • Built-in BMS for Overcharge/Discharge Protection
  • Customizable Dimensions & Connectors
  • Lightweight 330g Construction
  • 500+ Cycle Lifespan

Specification

Parameter Battery Specification Cell Specification
Rated Capacity 8400mAh (8.4Ah) 2800mAh (Typical)
Voltage 7.2V (2S3P Configuration) 3.6V (Nominal)
Max. Charge Current 0.2–0.5C 6A (Max)
Discharge Cut-Off Voltage 5.0V (Pack) 2.5V (Per Cell)
Dimensions 604075mm (Customizable) 18650 Standard Cell
Weight 330g 48g (Per Cell)
Cycle Life 500 Cycles (25°C) N/A
Operating Temperature -40°C to +55°C -40°C to +60°C
Energy Density N/A 610 Wh/l (Volumetric)
Max Discharge Current 35A (Per Cell) 35A (Continuous)

Application

Polar Research Equipment Power Supply

This 7.2V 8.4Ah lithium-ion battery is engineered to sustain critical operations in polar regions, powering data loggers, environmental sensors, and communication devices in temperatures as low as -40°C. Its ultra-low temperature resilience ensures uninterrupted energy for long-term research expeditions.

Arctic Rescue Operations & Emergency Gear

Ideal for frigid-zone rescue equipment like GPS trackers, medical devices, and survival tools, this battery delivers reliable performance in extreme cold. Its high capacity (8.4Ah) and fast-charging capabilities reduce downtime during life-saving missions.

Industrial Cold Storage Monitoring Systems

Optimized for cold-chain logistics and freezer monitoring, this battery supports temperature sensors, alarms, and IoT devices in sub-zero environments. The wide operating range (-40°C to 55°C) ensures stability across fluctuating industrial conditions.

Technical Advantages

  • Ultra-Low Temperature Resilience: Operates flawlessly at -40°C, outperforming standard Li-ion batteries.
  • High Energy Density: 610 Wh/l (volumetric) and 220 Wh/kg (gravimetric) for compact, lightweight power.
  • Fast Charging: Supports 0.2–0.5C charge rates, minimizing downtime.
  • Advanced Safety: Built-in BMS protects against overcharge, over-discharge, and short circuits.
  • Customizable Design: Flexible dimensions (60x40x75mm default) and connectors (XH2.54, PH2.54, DC5521).

Why Choose This Battery?

  • Reliability in Extreme Cold: Engineered for -40°C environments with minimal capacity loss.
  • Long Lifespan: 500+ cycles at 25°C, reducing replacement costs.
  • Safety-Certified: Robust BMS ensures stable operation in harsh conditions.
  • Adaptable: Customizable size and connectors for seamless integration into specialized equipment.
  • Efficient Power: High 8.4Ah capacity supports prolonged use in energy-intensive applications.

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