According to the store's description, this battery offers up to 8 hours of use and can be easily installed using a screwdriver and included instructions.
Battery Capacity: 2550mAh / 9.2 Wh (offers up to 8 hours of use, compared to 3–5 hours with standard Wii U GamePad Battery) Battery Voltage: 3.6V
$32 U.S.
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