Battery - Lithium 3V CR2 PIR Wireless Door Contact 27x15mm Part No: BA34-4
6 months - lifetime warranty
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The CR2 3V Lithium Battery is a compact, high-energy cell designed to power small yet power-demanding devices such as PIR motion sensors, wireless door/window contacts, digital cameras, and laser sights. With a 27mm height and 15mm diameter, this cylindrical battery delivers consistent 3V output and high capacity in a lightweight form factor, making it ideal for security and smart home applications.
Built using lithium manganese dioxide (Li-MnO) chemistry, the CR2 offers a typical capacity of 750850mAh, ensuring long-lasting performance and a low self-discharge rate. It provides reliable operation even in extreme temperatures, and its leak-resistant, mercury-free design guarantees safety and environmental compliance.
The CR2 is often used in wireless PIR sensors, door contacts, rangefinders, and tactical flashlights, delivering dependable power in critical situations. Whether for alarm systems or compact electronics, it's a go-to choice for professionals and home users alike.
Key Features
| Feature | Details |
|---|
| Battery Type | CR2 Lithium Cylindrical |
| Voltage | 3V |
| Capacity | 750850mAh (Typical) |
| Chemistry | Lithium Manganese Dioxide (Li-MnO) |
| Dimensions | 27mm (H) × 15mm (D) |
| Shelf Life | Up to 10 years |
| Leak-Resistant | Yes |
| Mercury-Free | Yes |
| Ideal Applications | PIR sensors, wireless door contacts, cameras, optics |
Technical Specifications
| Parameter | Specification |
|---|
| Model Number | CR2 |
| Nominal Voltage | 3 Volts |
| Capacity | 750850mAh |
| Dimensions | 27mm (Height) × 15mm (Diameter) |
| Weight | Approx. 11 g |
| Operating Temp Range | -20°C to +70°C |
| Shelf Life | Up to 10 years |
| Certifications | CE, RoHS, ISO9001 |
