Nikon MB D 10

With the included MS-D10 AA battery support, users can power the camera with 8 AA batteries. You can also use the NIKON EN-EL4 or the EN-EL4a battery (sold separately) in combination with the cover of the optional BL-3 Camera battery and get a higher shooting rate (8 frames per second on the D300) than the EN-EL3e battery can provide.

The MB-D10 also provides a comfortable vertical grip with an additional shutter release and scroll wheel for easy access to camera functions when taking pictures in portrait orientation. It is also quite compact, with dimensions of 5.9 x 2.9 x 1.7" (15 x 75 x 45 mm).