Nikon EN-EL15 Battery Recall
Nikon has a recall on certain batches of the EN-EL15 battery, which is used in the D800, D800E, D7000 and V1 cameras.
If you have an EN-EL15 battery pack with the 9th digit of the 14 digit lot number with either the letter E or F, you should immediately stop using it and remove the battery pack from the battery compartment. EN-EL15 battery packs with which the 9th digit is an A, B, C, D, G or any subsequent letter in the alphabet are not affected and not subject to this recall.