Lithium coin cell battery Varta CR2477 3V 650mAh

Varta CR2477 is a 3V lithium coin cell battery with a nominal capacity of 650mAh, designed for devices that require long shelf life, stable voltage and reliable standby power. The coin-shaped cell offers compact dimensions and low self-discharge, making it suitable for low-drain electronics and memory backup applications where consistent voltage over extended periods is important.

Advantages

The lithium chemistry provides a stable 3V output and a high energy density relative to size, supporting long operational time in compatible devices. Low self-discharge characteristics preserve charge during storage, while consistent voltage delivery helps maintain accurate operation of timekeeping, sensing and memory circuits. The compact form factor and standardized dimensions ensure compatibility with many coin-cell holders and consumer electronic devices.

Suitable for

• Watches and timekeeping devices
• Calculators and small handheld electronics
• Wireless sensors and remote controls
• Memory backup for electronic modules and RTC (real-time clock)
• Low-drain medical devices and measurement instruments

Key specifications

• Chemistry: Lithium manganese dioxide (3V nominal)
• Nominal capacity: 650 mAh
• Cell type: Coin / button cell
• Typical use: Low-drain and standby applications
• Storage characteristics: Low self-discharge for long shelf life
• Weight: 0.056 kg (product packaging weight as provided)

How to use

Install the battery in the device following the polarity markings (+/−) on the battery holder. Ensure correct seating in the coin-cell compartment to prevent poor contact. Replace with the same cell type when voltage falls below the operating threshold of the device; disposal should follow local regulations for lithium batteries. Avoid short-circuiting the terminals, exposure to high temperatures, crushing or disassembly.

Usage recommendations

Store unused batteries in a cool, dry place away from direct sunlight and heat sources to maintain shelf life. For devices in long-term standby, check battery condition periodically and replace before capacity decline affects device operation. Keep batteries out of reach of children and small parts away from open access to prevent accidental ingestion.