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
Amazon.com : STK EN-EL14 EN-EL14a Battery Pack for Nikon D3200 D3400 D3500 D3300 D3100 D5100 D5200 D5500 D5600 D5300 EL14 EL14A ENEL14 ENEL14A EN EL 14 14a D 3200 3300 3400 3500 3100 5100 5200 5500 5600 Grip : Electronics
Amazon.com : Nikon MH-24 Charger for Nikon EN-EL14 Li-ion Battery Compatible with Nikon D3100 DSLR, D5100 DSLR, and P7000 Digital Cameras + Bonus Items! : Electronics
Amazon.com: UltraPro Nikon D3100 Digital Camera Battery Charger (110/220v with Car & EU adapters) - UltraPro Replacement Charger for Nikon MH-24 Charger : Electronics