10.8V 6400mAh High Temperature 18650 Battery Pack with UN38.3 Certified
CMB’s CMB03020233 is a high-capacity, rechargeable 10.8V 6400mAh lithium-ion battery pack, purpose engineered for applications that demand stable and reliable discharge performance in elevated temperature environments ranging from 60℃ to 80℃. This high temperature battery is an ideal power source for outdoor controls, remote monitoring stations, industrial field devices, and other equipment that must operate under continuous or intermittent high-thermal stress.
Certified with UN38.3, the 10.8V 6.4Ah high temp battery CMB03020233 ensures safe transportation by air and sea, making it a trusted choice for global supply chains. Beyond transportation safety, each pack undergoes rigorous high temperature functional testing to guarantee capacity retention and cycle stability at up to 80℃ discharge.
To balance reliability with customization, CMB follows a proven design philosophy: 70% standardized modules + 30% tailored modifications. The 70% standard core – including selected high temp grade 18650 cells, BMS topology, and safety mechanisms – reduces development risk and shortens lead times. The remaining 30% allows us to adapt connectors, wiring, mechanical housings match your specific device requirements. This hybrid approach enables faster time-to-market while maintaining the performance and quality expected from a custom battery pack manufacturer.
Whether you need a drop-in solution for an existing high temperature application or a semi-customized power system for new equipment, CMB’s CMB03020233 offers the durability, safety, and thermal resilience your project demands.
Key features：
- Certified with UN38.3 transportation certification
- Operating temperature: -40℃ to +80℃ for discharge, -20℃ to +60℃ for charge
- Reliable solution for high temperature conditions
- Dimension: 75 × 56 × 38 mm (customizable)
Key Applications
Outdoor Controls & Telemetry
Solar-powered remote monitoring stations operating in desert or summer heat.
Remote Industrial Sensors
Pipeline or tank monitoring where ambient temperature exceeds 60℃.
Agricultural Electronics
Vehicle-mounted controls exposed to high engine/ambient heat.
Factory Automation
Equipment near ovens, furnaces, or high-temperature production lines.
| No. | Item | Specification | Note |
|---|---|---|---|
| 1 | Nominal Voltage | 10.8V | 3.6V/Cell |
| 2 | Nominal Capacity | 6.4Ah | @0.2C |
| 3 | Minimum Capacity | 6.15Ah | |
| 4 | Shipment Voltage | / | |
| 5 | Initial Internal Impedance | ≤150mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 12.6V | 4.2V/Cell |
| 7 | Standard Charge Current | 1.28A | @0.2C |
| 8 | Max. Charge Current | 0.6A | -20°C~0°C |
| 2A | 0°C~+60°C | ||
| 9 | Standard Discharge Current | 1.28A | @0.2C |
| 10 | Max. Discharge Current | 3A | |
| 11 | Burst Discharge Current | 10±3A | ≤50ms |
| 12 | Discharge Cut-off Voltage | 8.1V | 2.7V/Cell |
| 13 | Cycle Life | ≥350cycles | Retention: ≥70% |
| 14 | Charge Temperature | -20°C~+60°C | Standard charge |
| 15 | Discharge Temperature | -35°C~+80°C | Standard discharge |
| 16 | Storage Temperature | -20°C~45°C | ≤3 months |
| -20°C~25°C | ≤1 year | ||
| 17 | Weight | About 0.3 | kg |
| 18 | Special Request |
UN38.3 Certified 10.8V 6400mAh High Temperature Li-ion Battery Pack – FAQs
Does the 10.8V 6400mAh high-temperature battery pack support continuous discharge at 80℃?
Yes. The pack is assembled using our 3.6V 18650 3200mAh high-temperature grade cells. Please refer to the discharge curve below, which shows the cell’s performance at 80℃ under different discharge rates (0.2C, 0.5C, 1C, 2C and 10A.). The curve confirms stable capacity retention and safe operation at extreme temperatures.
Do you provide a full datasheet including discharge curves at -40℃, 25℃, 80℃ and cycle life data?
Yes, we can provide a comprehensive technical datasheet upon request. The datasheet includes:
- Discharge curves at -40℃, 25℃, and 80℃ under different C-rates
- Cycle life data at room temperature (≥500 cycles @80% DoD)
- High temperature accelerated aging test results (optional)
Please note that the full datasheet may require signing a NDA or providing your company email address for traceability.
What connector and wire options do you offer for this 10.8V pack?
We offer several standard connector and wire options for this 10.8V 6400mAh battery pack, including:
- Standard connectors: Molex, JST VH, JST XH
- Wire options: UL1007, UL1571, or UL3239 (high temperature rating up to 80℃+), available in AWG 18–26.
- Length: Customizable lead wires from 50mm to 500mm or as required.
Have you performed any thermal runaway or propagation test at high temperature?
Yes. We have performed internal thermal propagation tests on this high-temperature pack at 80℃. With BMS over-temperature protection and cell-to-cell insulation, a single cell failure did not propagate to adjacent cells. A test summary report is available upon request (detailed report under NDA).
Tailored Customization
Our design team can create custom battery designs for just about any device or machine.
Timely Delivery
Our efficient production and distribution process gets your product delivered in a timely manner.
Quality Guarantee
We stand by our products and guarantee you’ll be happy with your purchase.
