Sick Of The Wii U GamePad's Weak Battery Life? Nyko Is Your Friend | Nintendo Life
Somehow managed to fit a 10,000mAh battery inside of my Wii U game pad! Battery life from around 2 hours to (so far) more than 13 hours at full brightness. See captions, charging level/power on console all works as it should. : r/WiiUHacks
Was the Wii U GamePad's Short Battery Life Planned? — The Indy Gamer
CES: Nyko fixes the sucky Wii U GamePad battery problem – Destructoid
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Wii U GamePad battery life gets a boost from new Nyko accessories - Polygon
Guide to the Best Wii U Replacement GamePad Battery - Nerd Techy