Property me this battery ordered, so I spare in an emergency when the original Nikon battery is traveling times empty. At first (July 2012) it worked perfectly, always alternating with the original. Now I had the camera for a few weeks in use and behold not: The low-battery, who was in the unit, was now swollen and could even be removed from the device only with difficulty. My conclusion: rather just buy the original! In the end it's cheaper and even the environment!