Energizer Super Heavy Duty Carbon Zinc Chloride 6-Volt Batteries in the 6-Volt Batteries department at Lowes.com
Amazon.com: Duracell 28A 6V Alkaline Battery, 1 Count Pack, 28A 6 Volt Alkaline Battery, Long-Lasting for Cameras, Medical Devices, Garage Door Openers, and More : Health & Household