CR2032 Premium 3V Button Cell Battery (2-Pack) | Energizer

Energizer CR2032 – Premium 3V Button Cell for Smart Home & Home Automation

The Energizer CR2032 is a reliable 3V lithium coin cell battery with a capacity of 235-240 mAh , sold in packs of two (cut from a larger bulk pack). This coin cell is known worldwide for its long-lasting performance and reliability in various electronic devices.

Technical specifications

• Voltage : 3.0 Volt
• Dimensions : Diameter 20 mm, thickness 3.2 mm
• Type : Lithium-manganese dioxide (Li/MnO₂) button cell
• Weight : 3.0 grams per piece
• Temperature range : -30°C to +60°C
• Self-discharge : Approximately 1% per year, shelf life up to 10 years
• Certifications : CE marking, mercury free

Smart home and home automation applications

The CR2032 is the most commonly used lithium coin cell and is frequently used in:

• Smart sensors such as motion, door and window sensors
• Smart home hubs and remote controls for Zigbee, Z-Wave and RF devices
• Smart thermostats and climate sensors
• CMOS memory in computer motherboards and RTC (real-time clock) backup
• Car keys with keyless entry, calculators, scales, pedometers and medical devices

Performance & reliability

Energizer is known as a global A-brand with excellent puncture resistance and high energy density. In independent tests by Test Aankoop (2025), the Energizer Ultimate achieved a top score, with performance up to 5% better than the winner, the Varta CR2032. The battery delivers stable voltage over a wide temperature range and lasts up to 5x longer than standard alkaline batteries in comparable applications.

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