Amazon.com: Battery Grip Bundle for Nikon D3100/D3200/D3300 Includes Vertical Battery Grip, 1 ENEL14A Long-Life Battery, Charger, More : 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 : BM Premium 2 Pack of EN-EL14A Batteries and Dual Bay Battery Charger for Nikon D3100, D3200, D3300, D3400, D3500, D5100, D5200, D5300, D5500, D5600, DF Coolpix P7000, P7100, P7700, P7800
Amazon.com : BM Premium Pack of 2 EN-EL14A Batteries and Charger for Nikon D3100, D3200, D3300, D3400, D3500, D5100, D5200, D5300, D5500, D5600, DF, Coolpix P7000, P7100, P7700 Digital SLR Cameras :
Amazon.com : Battery and USB Battery Charger for Nikon D3100, D3200, D3300, D3400, D3500 Digital SLR Camera : 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