Amazon.com: Shentec CR2 Battery 3 Volt 1000mAh High Power 20 Pack 3V CR2 Lithium Batteries with PTC Protection for Flashlights Digital Cameras, Toys, Alarm Systems 20PCS (Non-Rechargeable) : Health & Household
Amazon.com: CR2 3V Lithium Battery, Taken CR2 Battery for Golf Rangefinder, Mini 25, Mini 50, Baby Monitor, Flashlight, Alarm Systems (12 Pack) : Health & Household