The Nikon MH-22 Quick Charger is a Dual Bay Battery Charger for Nikon EN-EL4 & EN-EL4a Rechargeable Lithium-Ion batteries. It will charge two batteries simultaneously, and the charger is capable of being used internationally.
* Accept 100-240V AC power (auto-switching).
Reviews Nikon MH-22 Dual Quick Charger for EN-EL4 / EN-EL4a (Nikon D2x D2h D2Xs D3)