The Wii U Gamepad is good and certainly very useful if one wants to play a game “off TV”. But the darn battery just isn’t very good and that’s rather annoying, especially since the thing seems to be required to stay on, even when streaming video using Netflix or other services.
To deal with this issue I purchased a Nyko Uboost extended battery for the Wii U Gamepad, which has significantly improved the total charge of the Gamepad. It’s not a replacement battery – it fits over the existing battery and provides additional power.
Surprisingly, it’s compatible with the original Gamepad charging dock and is very inexpensive at just under $15.
As a backup for longer gaming sessions I also purchased a Gamepad charging cable. It can’t charge the Uboost itself (the Uboost only charges on the dock connections) but the Uboost doesn’t prevent me from being able to easily access the more traditional charging port on the Gamepad. The charging cable also appears to be compatible with a USB extension cable I already had, which works well for a player position farther away from the Wii U or a power outlet. I chose to purchase the additional charging cable so I wouldn’t have to move the existing cable is connected to the Gamepad charging dock.