hybrid -x1
~graceful assassin~
According to GameStop, the Wii U Pro Controller can last up to 80 hours on a single charge, which is certainly a longer duration than the Wii U's main controller, the Wii U GamePad, after one charge. For the sake of comparison, an Xbox 360 controller lasts about 25-30 hours with new batteries.
Although Wii U is backward compatible with most Wii games, GameStop claims that the Wii U Pro Controller cannot be used with any Wii game; you cannot use any of Wii U's controllers to play Super Smash Bros. Brawl, for example.
The Wii U Pro Controller features the dual analog sticks and ergonomic button layout that you’ve come to expect, as well as a rechargeable battery that can last up to 80 hours on a single charge.
Source: MyNintendoNews