PS4 Controller with Easy-Upgrade: 2000mAh Battery for Double the Capacity
The PS4 controller comes with a 1000mAh battery by default. Simply swap out the battery (whether it’s dead or in need of an end-of-life upgrade) for a 2000mAh battery for double the charge. It’s the simple things like this that can go a long way – if nothing else it shows you that if you bought it, it’s yours, and you should be able to open it and mod it as you see fit.
Replacing the battery on a PS4 controller is easy. This also makes for better battery life by increasing the capacity from 1000 mAh to 2000 mAh. Very quick and easy, and involves removing the four screws in the bottom of the controller and prying the shell open.