CR2032 3V Lithium Coin Cell – CMOS & Timer Battery

The CR2032 3V Lithium Coin Cell is a high-performance primary lithium button battery engineered to provide stable, long-lasting backup power for motherboard BIOS/CMOS memory, Real-Time Clock (RTC) modules, microcontrollers, and precision electronic timers. With a nominal voltage of 3V and exceptional discharge stability, it guarantees that critical operational parameters and accurate clock timing are maintained uninterrupted.

Key Features

• Stable 3V nominal output voltage
• High energy density in a compact coin cell form factor
• Ultra-low self-discharge rate with up to 10-year shelf life
• Leak-resistant construction for safe device operation
• Wide operating temperature performance
• Ideal backup power source for CMOS BIOS memory and RTC timers
• Non-rechargeable primary lithium manganese dioxide (LiMnO2) chemistry

Technical Specifications

Applications

• Desktop PC, laptop, and server motherboard CMOS/BIOS memory backup
• Real-Time Clock (RTC) timer circuits and microcontroller modules (DS1307, DS3231, Arduino)
• Car key fobs and remote keyless entry systems
• Digital calculators, wristwatches, and electronic scales
• Medical equipment, glucose meters, and personal diagnostic monitors
• DIY electronics and portable embedded devices

Important Notes

• Do not attempt to recharge, short-circuit, or disassemble this non-rechargeable lithium cell.
• Verify correct polarity (+ and – orientation) prior to installation in battery holders or connectors.
• Keep out of reach of children; coin cells present a serious ingestion hazard.
• Store in a cool, dry place away from direct sunlight to preserve shelf life.
• Dispose of depleted batteries responsibly according to local environmental guidelines.