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Energizer 123 Lithium Batteries (2-Pack), 3V Photo Batteries EL123APB2 - The Home Depot
Duracell 123 3V Lithium Battery, 6 Count Pack, CR123A 3 Volt High Power Lithium Battery, Long-Lasting for Home Safety and Security Devices, High-Intensity Flashlights, and Home Automation : Amazon.ca: Electronics