10.8V 2900mAh 18650 Battery Pack with UN38.3 Certification
It can be hard for companies that make small industrial devices, portable instruments, and mission-critical equipment to find a power option that works well in a wide range of temperatures and doesn’t take up too much space. To complete this job, our client needed a small, light battery pack that would work reliably in both sub-zero and high-temperature settings, without sacrificing safety or long-term durability.
CM Batteries worked closely with the client’s engineering team to create a 10.8V 2900mAh 18650 lithium-ion battery pack that met all UN38.3 transport standards and was fully tested and approved. The final solution ensures dependable energy output, operational safety, and temperature stability in a lot of different industry situations.
Key features：
- 2.9Ah rated capacity with high energy density
- Compact 3S design built to fit strict 20 × 55.8 × 73 mm device spaces
- Reliable operation from –40°C to +85°C, ideal for harsh environments
- Supports 3A continuous / 10A burst to handle peak loads
- UN38.3 certified for safe global transportation
| No. | Item | Specification | Note |
|---|---|---|---|
| 1 | Nominal Voltage | 10.8V | 3.6V/Cell |
| 2 | Nominal Capacity | 2.9Ah | @0.2C |
| 3 | Minimum Capacity | 2.8Ah | |
| 4 | Shipment Voltage | / | |
| 5 | Initial Internal Impedance | ≤150mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 4.2V | 4.2V/Cell |
| 7 | Standard Charge Current | 0.58A | @0.2C |
| 8 | Max. Charge Current | 1.4A | |
| 9 | Standard Discharge Current | 0.58A | @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 | Capacity retention ≥70% |
| 14 | Charge Temperature | -20°C~0C(0.29A); 0C~+60°C(1.4A) | Max charge |
| 15 | Discharge Temperature | -40°C ~+85°C | Standard discharge |
| 16 | Storage Temperature | -20°C~45°C | ≤3 months |
| -20°C~25°C | ≤1 year | ||
| 17 | Weight | About 0.15 | kg |
| 18 | Special Request |
Related Battery Pack Cases
10.9V 2900mAh 18650 Battery Pack FAQs
Can this battery pack be upgraded to meet IEC 62133 or UL2054 certification?
Yes. The electrical design already supports compliance with higher safety standards. We cooperate with your team and testing labs to assist with the required certification process.
Can the size or shape of the battery pack be adjusted?
Yes. The pack was originally designed within strict space constraints, and we can re-engineer its dimensions to match your device housing.
Is the battery pack suitable for environments below –20°C?
Yes. It supports –40°C discharge, making it suitable for extreme cold applications such as outdoor devices, industrial instruments, and remote sensors.
What is the typical lead time for custom battery projects?
Development time varies by complexity, usually 3–6 weeks for engineering samples, followed by certification and mass production scheduling.
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.
