Nikon MB-D10 Multi Power Battery Pack
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))
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)
Can use EN-EL4/EN-EL4A (sold separately) with optional BL-3 Battery Chamber Cover
EN-EL4a/EN-EL4 and AA batteries support higher frame advance rates (8 Frames per second in the D700 & D300) than the EN-EL3e
The stock listed above does not take into account variances in stock levels that may occur and any items on hold.