Amazon.com : Bevik Dual Camera Battery Charger MH-26 for Nikon D5 D4 D4S EN-EL18 EN-EL4A EL4 Canon 1D IV 1Ds III LP-E19 LP-E4 LP-E4N : Electronics
Amazon.com: Kastar EN-EL4a AC LCD Dual Fast Charger Compatible with Nikon Camera D3, Nikon Camera D3S, Nikon Camera D3X, Nikon Camera F6 : Everything Else
Original EN-EL4a Battery Charging Quick Charger MH-22 For Nikon D3 D3S D3X D2X | eBay
Amazon.com: Kastar EN-EL4a AC LCD Dual Fast Charger Compatible with Nikon Camera D3, Nikon Camera D3S, Nikon Camera D3X, Nikon Camera F6 : Everything Else