Smoke Detector Battery

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Enegitech CR123A 3V Lithium Battery, 123 3 Volt Lithium Battery, for Home Security Alarm System Sensor Doorlock Smok Carbon Monoxide Alarm Non-Rechargeable (CR123A 2 Pack)

Enegitech CR123A 3V Lithium Battery, 123 3 Volt Lithium Battery, for Home Security Alarm System Sensor Doorlock Smok Carbon Monoxide Alarm Non-Rechargeable (CR123A 2 Pack)

Enegitech CR123A 3V Lithium Battery - 2 Pack. Reliable power for home security alarms, smoke detectors & door locks. Long-lasting, non-rechargeable design ensures consistent performance. Shop now for dependable backup!

4.6 (1,300)
$6.99
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CR123A Battery Guide: Uses, Lifespan, and How to Choose the Best
January 24, 2026
CR123A Battery Guide: Uses, Lifespan, and How to Choose the Best

Discover everything about CR123A batteries: their uses in home security, lifespan, and how to choose the best 3V lithium battery for your alarms and sensors. Get expert tips.