Amazon.com : Nikon MH-24 Quick Charger EN-EL14 Li-ion Battery Compatible D3100 DSLR, D5100 DSLR, and P7000 Digital Cameras : 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