MB-D10 Multi-Power Battery Pack - for D300
The MB-D10 multi-power battery pack increases the maximum frame advance rate to 8 frames per second * and extends autonomous operating time when using batteries. It is ergonomically designed for improved grip with the camera in the vertical shooting position and is powered by eight AA-size standard batteries or a specific Nikon battery. Features alternative shutter-release button, multi-selector and AF start buttons for use when holding the camera in the vertical shooting position, as well as secondary main- and sub command dials.
MB-D10 Multi-Power Battery Pack for D700 & D300 includes MS-D10EN for use with EN-EL3e battery (sold separately), and MS-D10 for use with 8 AA batteries (not included; accepts 1.5 V LR-6 (Alkaline), Lithium (FR6), Ni-MH (HR6) or Ni-Mn (ZR6))
Can use EN-EL4/EN-EL4A (sold separately) with optional BL-3 Battery Chamber Cover
EN-EL4/EN-EL4a batteries require BL-3 Battery Chamber Cover (sold separately) and either the MH-21 or MH-22 Quick Charger (both sold separately)
EN-EL4a/EN-EL4 and AA batteries support higher frame advance rates (8 Frames per second in the D700 & D300) than the EN-EL3e