The installation went smoothly and easily from the hand. After the first battery charge then you could also play longer than the original battery pack. However, there were some abnormalities. Yet precisely the level indicator showed 3 bars, one half an hour later quickly got the hint to connect the charging cable. Indeed, you do so, the battery is probably loaded, but sometimes the charging indicator was after half an hour again (unlikely that he was already fully charged). Another phenomenon was, sometimes when you turn the console, launched only the Gamepad, the console did not materialize. In a renewed attempt it worked. My guess regarding this behavioral abnormalities: The charging electronics in the gamepad has a problem read the correct level of the battery and to respond accordingly. Too bad. Articles sent back and ordered the original battery from Nintendo. Is more expensive but it also would have to work without any problem.