Helped my younger daughters with a couple of temples on Wind Waker, nearly completed Link Between Worlds, and just barely started Outbuddies on the PC. Our Wii-U gamepad was dying way too often (original battery from WAY back). I swapped out the 1500mAh battery with a 4000mAh. Now we barely have to charge it. What's funny is that I never had that compartment open before. There was tons of space for the larger battery, and it was even shaped for it. Technically they could have put the larger battery in there from day one. With all the Zelda playing lately, the old Wii-U is seeing more use than the Switch at the moment.