The BAT-HA10 is a ten-pack of AA-sized alkaline batteries made by Rayovac. They are designed to provide a reliable source of power for common everyday devices such as remote controls, toys, and flashlights. These batteries come pre-charged and are mercury and cadmium free. They are 1.5 Volts and measure 50mm in length and 14.5mm in diameter. They have a shelf life of up to five years, providing a long-lasting source of power.