Coin cell battery Varta CR2032 3V Ø20×3.2 mm non-rechargeable

Varta CR2032 is a single-cell, non-rechargeable lithium coin cell with a nominal voltage of 3V and dimensions Ø20 × 3.2 mm. Designed for compact, low-drain electronics, this coin battery delivers a stable voltage output and extended shelf life, making it suitable for periodic-use devices where long-term reliability is required. The compact, flat form factor allows simple replacement in battery compartments and holders commonly found in watches, calculators, key fobs and small motherboard memory backup circuits.

Advantages

The Varta CR2032 offers consistent 3V performance over its service life and a long shelf life when stored under recommended conditions. Its thin, round profile fits standard coin-cell holders and makes installation straightforward without additional adapters. The chemical stability of the lithium chemistry ensures low self-discharge, while the construction provides dependable operation in low-drain applications. The single-cell format is lightweight and reduces the need for frequent replacement in devices with intermittent usage patterns.

Suitable for

• Wristwatches and fitness trackers with coin-cell compartments
• Calculators and small electronic toys
• Key fobs, remote controls and car entry systems
• Motherboard CMOS/BIOS memory backup and RTC modules
• Medical devices with low power requirements (e.g., glucose meters)

Key specifications

• Cell type: Lithium manganese dioxide coin cell
• Nominal voltage: 3 V
• Typical dimensions: 20 mm diameter × 3.2 mm height
• Form factor: CR2032 coin cell
• Usage class: Primary (non-rechargeable) battery for low-drain devices
• Storage behavior: Low self-discharge, extended shelf life when stored at moderate temperature

How to use

Ensure the device is powered off before replacing the coin cell. Observe polarity markings in the battery compartment and align the positive side (+) of the Varta CR2032 with the corresponding contact. Press the cell gently into the holder until it sits flush; avoid using metal tools that could short the terminals. After installation, power the device on and verify normal operation. Dispose of used batteries according to local battery recycling regulations and do not attempt to recharge or disassemble the cell.

Usage recommendations

Store unused batteries in a cool, dry place away from direct heat and moisture. Replace coin cells promptly when device indicators show low voltage to avoid data loss in memory-backed circuits. Keep batteries out of reach of children; if swallowed, seek medical attention immediately. Do not expose the cell to fire or high temperatures, and avoid mixing new and used batteries in the same device.