Aputure Battery Vertical Grip BP-D80 for Nikon D80, D90, Replacing Nikon MB-D80 Multi Power Battery Pack
The Aputure Battery Grip is a powerful, versatile, and comfortable. It extends the battery life of your DSLR camera, offers a secondary shutter release button for vertical and portrait photography, and includes special function buttons for more shooting options. It comes with a tripod mounting thread as well. Whatever you get with your original brand's battery grip, you get with the Aputure Battery Grip, at a much more attractive price.