The Digipower PGR-NKD11 Multi-Power Battery Grip is compatible with the Nikon D-SLR D7000 D-SLR camera model. It is designed to double your shooting time by housing an additional Digipower BP-NKL15 or Nikon EN-EL15 battery. The PGR-NKD11 battery grip provides stability when capturing scenes in the vertical format. The PGR-NKD11 gives you the the option to power your Nikon D-SLR camera with 4 x AA batteries when using the included AA battery cartridge.