Energizer CR1220 Button Battery, 3 V, 12.5 mm Diameter

This button battery is a lithium coin cell designed to deliver a Compact 3V power source for small electronic devices. It uses a lithium/manganese dioxide chemistry to provide stable voltage and extended shelf life across a wide temperature range, making it suitable for low-drain and intermittent-duty applications where a thin, flat-termination cell is required.

• 37 mAh nominal capacity provides sustained low-current operation
• 0.8 g weight reduces overall device mass for Compact designs
• Flat termination enables reliable surface contact in tight compartments
• Low self-discharge of ∼1% per year extends storage life
• Operates from -30°C to 70°C for varied environmental use

• Suitable for small watches requiring Compact power cells
• Used with remote sensors featuring intermittent Pulse drains
• Ideal for memory backup in Compact electronic modules
• Can be used for medical devices with low continuous drain
• Used for key fobs and small security transmitters

With a 45 kΩ continuous load the typical drain is about 0.046 mA, producing long service hours to the 2.0 V cut-off.

Simulated pulses of 2 seconds, 12 times per day, yield higher instantaneous current capability while maintaining useful overall capacity.

Maximum permissible reverse charge current is 1 μA, keeping the risk of cell damage minimal under small reverse potentials.

Energy density is approximately 153 mWh/g and 464 mWh/cc for energy budgeting in Compact systems.