Compared with the original version of this battery lasts just half of images. However, the price is also less than 1/4. However, one is forced with this battery 1-2 battery pack if you shoot more intense. And every now and then is the camera with this battery depends on standby. Since only helps take out battery. With the original battery mine is never happened. Otherwise, there is nothing to complain about, he can be charged with the original charger.
Update May 2014. In the meantime, the battery lasts no more 100 images. Absolute scrap