Replacement Coin Cell Battery ML1220

Reliable power for compatible electronics

The Rome Tech ML1220 is a 3V rechargeable lithium coin cell for compatible compact electronics. It is rechargeable. With a nominal capacity of 18 mAh and an operating temperature range of -20 to +70°C, it is designed for use in compatible rechargeable backup circuits.

Suitable for backup power and low-power electronics

Typical applications include RTC backup, memory backup and other compatible low-drain rechargeable battery circuits. Its 12.5 mm diameter × 2.0 mm height format is intended for holders or assemblies compatible with ML1220; confirm the required battery dimensions and electrical specifications before use.

Features

• Nominal voltage: 3V

• Nominal capacity: 18 mAh

• Operating temperature: -20 to +70°C

• Chemistry: Li-Al Alloy-Manganese Dioxide/Organic Electrolyte (Li-Al/MnO2)

• Dimensions: 12.5 mm diameter × 2.0 mm height

• Battery type: Secondary, rechargeable

• Nominal discharge current (approximate): ≈0.01 mA

• Typical weight (approximate): ≈0.7 g

• Annual self-discharge (reference/estimate): Estimate only: 1–3%/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.

Use only in equipment designed for this rechargeable battery chemistry and with a suitable charging circuit. Do not short-circuit, disassemble or solder directly to the cell. Keep coin batteries away from children.

Datasheet