Users will be able to replace the rechargeable battery contained within the Wii U's controllers themselves.
Both the screen-equipped GamePad controller and more traditional Wii U Pro Controller contain rechargeable batteries tucked behind panels that can be removed simply with the loosening of a conventional screw, reports Shack.
This would seem like a trivial feature, but it's common nowadays for electronic devices (including PS3's DualShock 3 controller and most modern Apple devices) to contain rechargeable power packs that aren't designed to be accessible to the user. When these cells expire, users are often required to send their devices in for battery exchanges.
Nintendo estimates that the GamePad battery's usage time will be reduced to around 70 per cent after 500 charges. When you consider that Wii U's GamePad contains a screen which consumes more power than your average controller, this is a target you're far more likely to surpass than with conventional controllers which use considerably less power and thus require less charging.
In the event of battery deterioration, Nintendo will offer replacement battery packs for order directly through its customer support service, although prices are yet to be confirmed.