Replacement Coin Cell Battery CR2440

Reliable power for compatible electronics

The Rome Tech CR2440 is a 3V lithium coin cell for compatible compact electronics. It is non-rechargeable. With a nominal capacity of 480 mAh and an operating temperature range of -20 to +60°C, it is intended for compatible compact electronic devices.

Suitable for backup power and low-power electronics

Typical applications include key fobs, clocks, memory backup and other compatible compact electronics. Its 24.5 mm diameter × 4.0 mm height format is intended for holders or assemblies compatible with CR2440; confirm the required battery dimensions and electrical specifications before use.

Features

• Nominal voltage: 3V

• Nominal capacity: 480 mAh

• Operating temperature: -20 to +60°C

• Chemistry: Lithium Manganese Dioxide (Li/MnO2)

• Dimensions: 24.5 mm diameter × 4.0 mm height

• Battery type: Primary, non-rechargeable

• Nominal discharge current (approximate): ≈0.2 mA

• Typical weight (approximate): ≈5.3 g

• Annual self-discharge (reference/estimate): Reference: <2%/year at 20°C

Choosing the right battery

Confirm your device’s voltage, current, battery holder or mounting method, and operating temperature requirements before installation. Actual capacity and service life depend on load, temperature and device conditions. For use near the stated temperature limits, contact Rome Tech for application guidance.

Do not recharge, short-circuit, disassemble or solder directly to the cell. Keep coin batteries away from children.

Datasheet