For continuous duty, I can not yet comment too much, after a few charging cycles I will tell my experience at this point. So much in advance: The battery is at least not much worse than the EN-EL14.
Addendum to continuous power: the battery bring slightly less power than the Nikon EN-EL14 origiale. Depending on the temperature and it can use about 10 - 15% less than the allowances to EN-EL 14 Personally, I am quite satisfied with it, since he is about 50% cheaper than the original version of Nikon.
