Energizer CR2 Lithium Batteries (2-Pack), 3V Photo Batteries EL1CR2BP2 - The Home Depot
Procell High Power CR2 3V Lithium Battery (12-Pack) - Roush Hardware
Amazon.com: EBL CR2 Lithium Battery, 3 Volt 800mAh Photo Battery for Mini 25, Mini 50, Golf Rangefinder, Flashlight, Electronic Toys, Alarm Systems ( CR2-8 Count) : Health & Household