1.5 Volt

Fenix ARB-L14-1600U USB rechargeable battery at 1600mah Provides an alternative to an AA battery. Operates at 1.5Volt and can be used in a wide variety of consumer electronics devices such as Blood Pressures, Business & Home portable appliances, Cameras, Electronics, Flashlights , Radio Clocks, Remote controls , Toys, Video Game Controllers , Wireless Desktop Sets, Wireless Keyboards, Wireless Mice.