Charge the supplied EN-EL25 battery in the supplied MH-32 battery charger before use.
Read and follow the warnings and cautions in “For your safety” (For your safety) and “Caring for the camera and battery: Cautions” (Caring for the camera and battery: Cautions).
If the CHARGE lamp flashes rapidly (8 times a second):
If the problem persists, unplug the charger and end charging. Bring the battery and charger to a Nikon-authorized service representative.