NIKON EH-7P AC ADAPTER
The EH-7P is a charging AC adapter that is used to charge the EN-EL15c an EN-EL15b rechargeable Lithium-ion battery while it is in the camera’s battery compartment and the camera is connected to the charger.
EH-7P charging AC adapter is also used with the MH-33 charger, compatible with EN-EL18d, EN-EL18c and EN-EL18b batteries.
The EH-7P cannot be used to charge an EN-EL15 or EN-EL15a Li-ion battery. Those batteries must use the MH-25a battery charger.
While connected to the EH-7P Charging AC Adapter, if the camera is switched on, it will operate under battery power only.