Phottix Battery grip for the Nikon D3100 or D3200 - YouTube
D3100 battery grip to use on d3200?: Nikon DX SLR (D40-D90, D3000-D7500) Talk Forum: Digital Photography Review
Xit XTNG3100 Pro Series Battery Power Grip for Nikon D3100/D3200 Digital SLR Cameras (Black) - Walmart.com
Neewer Multi-Power DSLR Vertical Battery Grip and Cable for Nikon D5100 D5200 | eBay
Canon Battery Grip BG-E4 (BP511, BP-511A) at KEH Camera
Jupio Battery Grip for Nikon D3100/D3200/D3300/D5300 + Cable | Photography - VL Camera Photographic Store
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
Battery Grip For Nikon D5300, D5200, D3300, D3200 - YouTube
NEEWER Vertical Battery Grip for NIKON Work with EN-EL14 - NEEWER – neewer.com
Vertical Grip Holder for Nikon D5300 D3300 D3200 D3100 DSLR Camera K1E1 | eBay
Multi-Power Battery Grip With 2-Pc EN-EL14a Battery For Nikon D3100 D3200 - Walmart.com