3.6V 2900mAh Battery pack for Access Control

3.6V 2900mAh High Temperature Battery for Outdoor Device for Access Control

CMB takes pride in designing and manufacturing battery packs specifically tailored for high-temperature environments, especially in IoT applications. Our greatest advantage lies in our ability to provide fully custom battery pack designs based on our customers’ needs, including extreme temperature ranges, waterproofing, stable power supply, Bluetooth, and various battery shapes and sizes. Contact us today!

3.6V 2900mAh High Temperature Battery


  • High-Temperature Resilience: Engineered with cutting-edge technology, our battery operates flawlessly in extreme outdoor conditions, ensuring uninterrupted access control functionality.
  • Customized PCB Integration: Seamlessly integrated with a tailored PCB solution, optimizing power delivery and enhancing device compatibility for superior performance.
  • Long-lasting Reliability: Built to endure, our battery pack provides extended usage cycles, reducing downtime and maintenance costs for your access control systems.

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3.6V 2900mAh Access Control Battery Pack Parameter

No. Item Specification Note
1 Nominal Voltage 3.6V 3.6V/cell
2 Nominal Capacity 2.9Ah @0.2C
3 Minimum Capacity 2.8Ah /
4 Initial Internal Impedance ≤100mΩ AC 1KHZ
5 Standard Charge Voltage 4.2V 4.2V/cell
6 Standard Charge Current 0.58A @0.2C
7 Max. Charge Current 1.4A /
8 Standard Discharge Current 0.58A @0.2C
9 Max. Discharge Current 4.2A /
10 Burst Discharge Current 4~8A <10ms
11 Discharge Cut-off Voltage 2.8V 2.8v/cell
12 Cycle life(0.2C Discharge) ≥500cycles Retention: ≥70%
13 Charge Temperature -20°C~60°C -20°C~-10℃: 0.05C to 4.1V
-10°C~0℃: 0.1C to 4.1V
0°C~10℃: 0.2C to 4.2V
10°C~60℃: 0.5C to 4.2V
14 Discharge Temperature -40°C~85°C 0°C~85℃: 2.75V
-20°C~0℃: 2.5V
-4°C~20℃: 2.0V
15 Storage Temperature -20°C~45°C ≤3 months
-10°C~25°C ≤1 year
16 Weight About 65g /
How We’ll Work Together
We’ll ask questions via our inquiry form about your specific battery needs. Please provide us with the voltage, capacity, specific battery casing, and any special requirements at this time.
We’ll design the ideal battery pack for your device.
We’ll send you a contract once you sign off on your unique battery pack design.
We’ll provide you with an estimate according to the volume you require.
We’ll produce and deliver a sample product for you to test and approve.
Production and Delivery
We’ll manufacture, QC check, and deliver your custom battery order.

IoT Battery Pack Applications

3.6V 2900mAh Access Control Batteries FAQs

Does the battery support wireless communication protocols such as Bluetooth for connectivity?

Depending on your specific requirements, we can integrate batteries with communication capabilities like Bluetooth. This enables seamless connectivity for IoT devices and access control systems.

What safety features does the 3.6V 2900mAh high-temperature battery offer?

Our battery packs are equipped with built-in protection mechanisms such as overcharge protection, over-discharge protection, short circuit protection, and temperature monitoring to ensure safe and reliable operation.

Can the battery withstand exposure to direct sunlight or extreme weather conditions?

While our high-temperature batteries are designed to operate in outdoor environments, prolonged exposure to extreme conditions like direct sunlight or extreme cold may affect performance. We recommend consulting with our team for specific environmental testing and recommendations.

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.