Suitable for charging 2-4 AA or AAA, 2-4 C or D and 1 x 9v Battery. Charger features LED charge indication and offers six hour charging time for standard batteries. Why would you chose this product? Suitable for the user that is looking for an inexpensive and easy to use battery charger from a reputable brand. This battery charger is compatible with all normal rechargeable batteries including AA, AAA, C, D and 9v. Excellent solution for security industry or for devices that use D size batteries. Most modern compact charges do not accommodate D size batteries due to the batteries overall size and capacity. How easy is it to use? Charger is very simple to use. Utilises spring charge slots that allow for charging of any size battery (AA, AAA, C, D and 9v). The charger LED status indicator will change from red to green when the battery is charged. Charger operates off standard AC power.