4 X Cr2 Panasonic Industrial 3 Volt Lithium Batteries - Walmart.com
Energizer CR2 3V Lithium Battery
Duracell Lithium battery Lithium Cr2 Digital Camera Batteries (2-Pack) in the Device Replacement Batteries department at Lowes.com
Amazon.com: Duracell CR2 3V Lithium Battery, 2 Count Pack, CR2 3 Volt High Power Lithium Battery, Long-Lasting for Video and Photo Cameras, Lighting Equipment, and More : Electronics