3V CR2 LiMnO2 Battery for cameras, sensors, medical and security devices
| Item | Parameters |
|---|---|
| Capacity | 800mAh, 900mAh, 1000mAh |
| Discharge current | 20mA |
| End Voltage | 1.5V |
| Open circuit voltage | 3.00V~3.40V |
| -20°C discharge (20mA/1.5V) | >600mAh |
| Operating temperature | -40℃~70℃ |
| Storage temperature | 5℃~40℃ |
| Weights | 11g |
| Dimensions (diameter * total height) | (Φ15.3 ±0.3) * (26.5 ±0.5) mm |
| Storage life | 10 years |
Small CR2 3V cells store substantial energy despite their compact volume.
Higher open-circuit voltage supports efficient storage and rapid power delivery.
Performs reliably across diverse environments and temperature conditions.
Provides consistent voltage and current for reliable device operation.
Low Self-Discharge: At 25C, annual capacity loss is below 1%.
At 25C, annual capacity loss is below 1%.
With proper storage, CR2 lithium batteries can last over ten years.
Small cylindrical shape suits devices with limited internal space.
Safety features help prevent overcurrent and reduce leakage risk.
Top CR2 li-MnO2 Batteries Manufacturers in China
VTCBATT is a professional manufacturer of CR2 Li-MnO2 batteries, known for compact size, high energy density, stable 3.0V output, and long shelf life. With advanced production systems and consistent quality management, VTCBATT provides reliable large-volume supply for B2B customers in cameras, flash units, flashlights, laser devices, wireless sensors, security systems, smoke detectors, and medical electronics. Supported by strict quality control, international compliance standards, and flexible OEM/ODM service, VTCBATT is a dependable partner for businesses seeking high-performance CR2 lithium manganese batteries with scalable manufacturing capability.
Complete Guide to CR2 Lithium Batteries
CR2 batteries are known for delivering high energy in a compact form factor, making them ideal for devices that need strong power in limited space. From digital cameras and flashlights to medical instruments, CR2 cells play a critical role across many applications. Their long shelf life means they remain ready when you need them most. With a stable 3.0V output and typical capacities from 800mAh to 1000mAh, CR2 lithium manganese batteries provide dependable and consistent performance. This guide helps you choose the right CR2 battery for your device while highlighting key safety practices for storage, handling, and disposal. Use the right battery, follow proper safety steps, and get reliable power with confidence.
CR2 LiMnO2 Test Charts
These test charts show how a CR2 LiMnO2 battery performs under different loads, temperatures, and storage conditions. In the constant-current discharge graph, higher current (for example, 1000 mA) causes faster voltage drop and lower usable capacity, while low current (20 mA) maintains a longer, more stable voltage plateau and delivers higher capacity. The pulse-discharge graph highlights temperature sensitivity: performance is strongest at high temperature(60°C), acceptable at room temperature (20°C), and clearly reduced at low temperature (-20°C). The voltage-versus-temperature graph confirms that output voltage and discharge capability improve as temperature increases. The aging discharge chart compares initial performance with cells stored for 200 days at 60°C, showing reduced voltage platform and earlier cutoff after thermal aging. Overall, the figure demonstrates the battery’s practical strengths and limits in high-load use, wide-temperature environments, and long-term reliability evaluation.
CR2 Battery Safety Tips
CR2 3.0V lithium manganese batteries are compact and powerful, but safe handling is essential for reliable performance. Store batteries in a cool, dry place away from direct sunlight, heat sources, water, and open flames. Never attempt to recharge CR2 primary cells, as charging can cause overheating, leakage, or rupture. Prevent short circuits by keeping battery terminals away from metal objects such as keys, coins, or tools. Do not mix old and new batteries or different brands in the same device, and replace batteries as a complete set when required. Avoid crushing, puncturing, disassembling, or dropping batteries, since physical damage may trigger chemical leaks or thermal hazards. Inspect batteries regularly for swelling, corrosion, or leakage, and remove damaged cells immediately. Keep batteries out of reach of children and pets to prevent accidental swallowing. Dispose of used batteries through authorized recycling channels according to local regulations to protect people, equipment, and the environment.
Why Choose VTCBATT?
VTCBATT not only focuses on customized design and excellent service to meet the diverse demands of different customers, but also devotes itself to precise and standardized manufacturing in every process to ensure the highest-quality batteries. Meanwhile, VTCBATT will provide comprehensive support from pre-sales to after-sales, focusing on customers’ feedback to establish long-term and win-win cooperation. VTCBATT professional sales and technical engineer teams will be your best custom battery experts to assist with reliable and fast services at any time.
From the raw materials mixing to the cell test, VTCBATT adopts an automatic manufacturing process to maximize production efficiency and enhance the batteries quality, safety, and reliability. The entire manufacturing process is monitored and 100% tested before flowing to the next procedure to ensure zero defects before delivery.
Over the past 20 years, VTCBATT has built strong partnerships with customers in more than 50 countries worldwide. With reliable quality, responsive service, and tailored battery solutions, we have earned the trust of our clients—many of whom have maintained long-term cooperation and lasting friendships with us for over a decade. Together, we continue to grow and move forward toward a brighter future.
Application
The CR2 3V LiMnO2 battery is widely used in cameras, flash units, tactical flashlights, laser devices, wireless sensors, smoke detectors, and other compact electronics where stable voltage and long shelf life are essential. With its small cylindrical form and high energy density, it delivers reliable power in space-limited designs and is a practical replacement for standard CR2 primary cells in high-drain and intermittent-use devices.
The cell provides a nominal 3.0V output, low self-discharge, and often up to 10 years shelf life under proper storage. LiMnO2 chemistry also offers good leak resistance and dependable performance across a broad temperature range. As a non-rechargeable lithium primary battery, the CR2 is designed for safe, stable, and consistent operation in both consumer and professional applications.
