Pack of 12 (6 x 2) Duracell DL123A 3V Lithium 123A Batteries (packaging may vary) - TheBatterySupplier.Com
Duracell CR123A 3V Lithium Battery - (2-Pack) 004133366192 - The Home Depot
Amazon.com: Duracell CR123A 3V Lithium Battery, 6 Count Pack, 123 3 Volt High Power Lithium Battery, Long-Lasting for Home Safety and Security Devices, High-Intensity Flashlights, and Home Automation : Health & Household