Finally, a battery grip for use with Nikon D3100 and D3200 DSLR. This grip takes one or two EN-EL14 batteries. Effectively double your shooting time and make a small camera body easier to hold. This grip comes with a shutter-release button to make vertical shooting easy and comfortable . A short cable connects the battery grip to the Nikon D3100's remote port to provide this functionality.
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Reviews Phottix BP-D3100 Battery Grip for Nikon D3100 & D3200 Digital SLR Camera