B01N6WYX80 Green Extreme Multi Power Battery Grip (MB-D15 Replacement) for Nikon D7100 & D7200 DSLR Camera, Holds EN-EL15 Battery or 8 AA Batteries

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Battery Grip – AA Battery Clip – 1 Year Warranty
Professional camera grip for horizontal or vertical photography
Intelligent link to camera functions
Matches design and feel of your camera
Double the power with twin battery chamber