I am very happy with the battery. It works fine as the original, only 1/3 of the price. Arrived he is with a maximum charge of 5000mAh, after two complete charging and discharging it reaches the current 5246mAh, representing even a bit more than the specified 5200mAh. At full screen brightness and connect to the Wi-Fi the battery about 2 1 / 2h holds in dimmed the screen and no Internet but also to ca 4h. So far I had no problems of any kind.
Differences that are noticed to the original: the haptic effect produces a little cheaper, the Akkuleds not light up when charging but only when it expresses and the battery does not jump out by itself from the notebook when you open the shutter - you have to turn the Laptop short To remove the battery pack.
But these are very minor points considering the fact that the battery works great. I can only recommend.
