Nikon MH-22 Quick Charger for D3 Charges EN-EL4a battery
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* because it can accept 100-240V AC power (auto-switching).
* Use outside North America requires an adapter plug (not supplied).
