The MB-D15 is a Multi-Power Battery Pack for the D7100.
Neewer Vertical Battery Grip Replacement for MB-D15 Works with EN-EL15 Battery or 6 Pieces AA Batteries for Nikon D7100 D7200 Digital SLR Camera
Nikon MB-D11 Multi Function Battery Pack for D7000 - Special Deals at KEH Camera at KEH Camera
Battery Grip Nikon Mb D15, Battery Grip Nikon D300s
Nikon MB-D15 Multi Battery Power Pack - 27096 The MB-D15 is a Multi-Power Battery Pack for the D7100. The MB-D15 Multi-Power Battery Pack can be powered either by six AA batteries (Alkaline or Ni-MH or Lithium), or EN-EL 15 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.
Nikon MB-D15 Multi Power Battery Pack for D7100
Used Nikon MB-D15 Battery Grip
Nikon MB-D15 Multi-Power Battery Pack - Accessory – Kamerastore
Nikon MB-D15 Battery Grip for D7200 and D7100 for Sale in Dallas, TX - OfferUp
Multi Power Battery Grip (MB-D15 Replacement) For Nikon D7100 & D7200 DSLR Camera, Holds EN-EL15 Battery or 8 AA Batteries
Battery Grip Bundle F/Nikon D7100, D7200: Includes MB-D15 Replacement Grip, 1-Pk EN-EL15C / EN-EL15 Replacement Long-Life Battery, UltraPro Accessory Bundle : Electronics