Nikon Multi-Power Battery Pack MB-D15 for D7100 & D7200

The MB-D15 is equipped with a shutter-release button, AE/AF lock button, multi selector, and main- and sub-command dials for improved operation when taking photographs with the camera vertically oriented. The MB-D15 Multi-Power Battery Pack can be powered either by six AA batteries (Alkaline or Ni-MH or Lithium), or EN-EL15 rechargeable Li-ion batteries. To use the MB-D15 with AA batteries, use the MS-D14 AA Battery Holder. When using EN-EL15 batteries to power the MB-D15, use the MS-D14EN Battery Holder.