Nikon D780 Reference Manual page 863

2
After confirming that the camera is off, connect
the charging AC adapter and plug the adapter in.
EH-7P Charging AC Adapter
1
•
Insert the plug straight into the socket rather than at an
angle.
•
The charge lamp lights amber while charging is in
progress. The charge lamp turns off when charing is
complete.
•
The battery will not charge while the camera is on.
•
Note that although the camera can be used while
connected, the camera will not draw power from the
charging AC adapter while the camera is on.
Charge lamp
2
Technical Notes
817