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)

Customers find these batteries work well in security systems, particularly in Vivint glass break detectors, and appreciate their fit and quantity. The battery life receives mixed feedback - while some customers report lasting power, others mention they didn't last even 24 hours. The brand compatibility also gets mixed reviews, with some customers finding them an exact match for their devices while others warn against using this off-brand product.