Disconnect the USB cable or unplug the Charging AC adapter and correctly connect it again, or try a back up battery. Also, connect the USB to another computer in order to charge the battery. If the problem persists you will need to send the camera and the charger to be evaluated.
Title: How do I get my Nikon product serviced?
answered 1 year, 5 months ago
1 year, 5 months ago