Amazon.com : Nikon MH-24 Quick Charger for EN-EL14 Li-ion Battery compatible with Nikon D3100 DSLR, D5100 DSLR, and P7000 Digital Cameras : Electronics
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 : BoxWave Charger Compatible with Nikon D3100 (Charger by BoxWave) - Digital Camera Battery Charger, Car Charger for Camera Batteries for Nikon D3100, Nikon D3100 | Coolpix P7000 : Digital Camera
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 Battery Grip Kit for Nikon D3100 D3200 D3300 D5300 Digital SLR Camera - Includes BG-N12 Battery Grip Replacement + Qty 1 EN-EL14 Battery + Battery Charger : 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