Duracell CEF22-UK, Nickel-Metal Hydride (NiMH), 9v, AA, AAA, C, D Duracell CEF22-UK. Compatible battery technologies: Nickel-Metal Hydride (NiMH), Compatible battery sizes: 9v, AA, AAA, C, D. Product color: Black, LED indicators: Charging. Input voltage: 230 V, Output voltage: 9 V. Width: 7.87" (200 mm), Depth: 4.13" (105 mm), Height: 2.56" (65 mm)