Amazon.com : Neewer Professional Vertical Battery Grip Replacement for Nikon D3100/D3200/D3300/D5300 SLR Digital Camera, Works with 1 or 2 Pieces EN-EL14 Batteries : Electronics
Vello BG-N12 Battery Grip for Nikon D3100, D3200, & D3300 BG-N12
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Amazon.com : Neewer Professional Vertical Battery Grip Replacement for Nikon D3100/D3200/D3300/D5300 SLR Digital Camera, Works with 1 or 2 Pieces EN-EL14 Batteries : Electronics
Jupioshop. Connection cable for Nikon Battery Grip
Vertical Battery Grip Holder for Nikon D5300 D3300 D3200 D3100 DSLR Camera B2T5 | eBay