The CR2032 Lithium Manganese Dioxide Coin Cell Battery is the global industry standard, non-rechargeable button cell designed to provide long-lasting standby power for low-drain electronic memory circuits. The alphanumeric “CR2032” code directly specifies its chemistry and physical dimensions: 20 mm in diameter and 3.2 mm in thickness. It is the primary backup power source for desktop computer motherboard BIOS CMOS memory chips, real-time clock (RTC) modules, car key fobs, kitchen scales, and small digital medical devices.Â
✨ Key Features
- Global Standard Footprint: Fits into almost all standard 20mm coin cell holders found on development shields and consumer electronics globally.Â
- Ultra-Low Self-Discharge: Retains up to 90% of its original capacity even after 10 years of shelf storage, making it excellent for emergency backup systems.Â
- Stable Volumetric Energy Output: Delivers a steady 3.0V output across nearly its entire operational discharge cycle, shielding microchips from under-voltage resets.Â
- Leak-Resistant Stainless Case: Housed in an anti-corrosion steel shell that safely encapsulates the lithium chemistry, preventing chemical leaks onto expensive circuit boards.

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