The contents of the package: A battery which is connected to the battery cover. A German-language instructions and a screwdriver to remove the old battery cover and install the new battery.
Installation: It is very easy. With the included screwdriver to solve the two screws of the original cover, pull the plug of the battery and removes the entire battery. Then you put the new battery ... rotate the two screws (mounted in the cover) again and by pressing the button on the back to set the connection.
You should charge the battery before use again.
For capacity than the original Nintendo battery.
Setting: brightness level 3, Low Power Mode, Vibration: ON
Time Nintendo Original: 2.75 hours
Playtime Snakebyte: 5.75 hours
It is really worthwhile to buy this battery, when you play intensively with the Wii U. Absolute recommendation worth !!!