Battery Panasonic CR2012 3V Lithium – coin cell for watches, calculators, key fobs

Panasonic CR2012 3V lithium coin cell is a compact primary battery designed to deliver stable 3V power for small electronic devices. The cell fits applications that require the CR2012 size and nominal 3V output, offering long shelf life and consistent voltage under low-drain conditions. Its flat, coin-shaped form factor makes it suitable for tight compartments in watches, calculators, key fobs and similar portable electronics.

Advantages

The Panasonic CR2012 provides reliable, low-self-discharge performance that preserves capacity during storage and intermittent use. Its stable voltage output across typical low-current loads ensures predictable device operation, and the cell’s compact diameter and thin profile allow installation where space is limited. The chemistry and build quality support long standby life in clocks, remote controls and memory-retention circuits.

Suitable for

• Wrist watches and small timepieces
• Basic calculators and pocket electronic devices
• Key fobs, remote controls and car immobiliser remotes
• Medical monitoring devices with low power draw
• Backup and memory-retention circuits in small electronics

Key specifications

• Nominal voltage: 3 V
• Cell format: coin / button cell (thin profile)
• Chemistry: lithium (primary, non-rechargeable)
• Designed for low-drain and intermittent load applications
• Long shelf life with low self-discharge

How to use

Install the Panasonic CR2012 with correct polarity as indicated in the device battery compartment: the positive side (marked +) typically faces up. Ensure the contacts are clean and free of corrosion before insertion. Do not attempt to force the cell into a compartment that is not designed for the CR2012 size; if the cell does not fit easily, verify that your device specifies this battery type. Dispose of used batteries according to local regulations for lithium primary cells.

Usage recommendations

Store batteries in a cool, dry place away from metal objects and heat sources to minimise self-discharge and risk of short-circuiting. Replace batteries in matched pairs where applicable and remove depleted cells promptly to avoid leakage or device malfunction. Do not recharge, disassemble or expose the cell to fire.