Button battery RENATA CR2450N 3V 540 mAh — coin cell for electronics

RENATA CR2450N is a 3V lithium button (coin) cell with a nominal capacity of 540 mAh, designed for reliable power delivery in small electronic devices. The cell provides a stable voltage output and long shelf life, making it suitable for low-drain and intermittent-use applications. Its compact coin shape and standardized dimensions allow straightforward installation in compatible holders and compartments for replacements and maintenance.

Advantages

The RENATA CR2450N offers consistent voltage stability throughout typical discharge cycles and a nominal capacity that supports extended operation in devices such as watches, key fobs and medical instruments. Its long storage life reduces the need for frequent replacement, and the lithium chemistry performs well in a range of ambient temperatures. The coin cell’s standardized size ensures compatibility with many device holders and simplifies swap-outs during maintenance.

Suitable for

• Watches and timekeeping devices
• Car key fobs and remote controls
• Calculators and small electronic toys
• Medical instruments and health monitoring devices (non-implantable)
• Memory backup in electronic modules and backup clocks

Key specifications

• Chemistry: Lithium manganese dioxide (Li-MnO2)
• Nominal voltage: 3 V
• Nominal capacity: 540 mAh
• Cell type: Button / coin cell
• Typical usage: Low-drain and intermittent-load devices
• Operating temperature range: suitable for common ambient indoor and portable device conditions

How to use

Before replacing a battery, power off the device if possible and observe correct polarity when inserting the RENATA CR2450N into the battery holder. Use a clean, dry tool or gloves to avoid contamination of the contacts. Ensure the cell sits flat and contacts are secure before closing the compartment. Dispose of used lithium coin cells in accordance with local battery recycling and waste regulations.

Recommendations

Store unused RENATA CR2450N cells in a cool, dry place away from direct sunlight and metal objects. For devices requiring continuous operation or high current draw, verify suitability as lithium coin cells are optimized for low-drain applications. Replace cells at the first sign of reduced performance or device memory warnings to avoid data loss.