The MuRata CR2032 is a primary lithium coin cell based on Lithium Manganese Dioxide (Li-MnO₂) chemistry. Known for reliability, high energy density, and long shelf life, it is one of the most popular coin batteries in consumer electronics.

With a nominal capacity of ~220mAh, this coin cell provides consistent power output for a wide range of low-to-medium drain applications, including car key fobs, real-time clocks (RTC), glucose meters, medical sensors, security devices, and IoT modules.

It features excellent leakage resistance, low internal resistance, and stable discharge characteristics even under varying load conditions. Its compact 20mm diameter × 3.2mm thickness design makes it suitable for slim and portable devices.

Compared to higher-capacity options like CR2450 (620mAh) or CR2430 (285mAh), the CR2032 remains the industry standard for compact power solutions due to its balance of size, energy, and availability.