How to: Change the Dualshock4 battery and make it last longer (by natemir) - Wololo.net
Amazon.com: Starnovo 1800mAh 3.7V Rechargeable Battery Compatible with Sony Playstation 4 PS4 Dualshock 4 Wireless Controller CUH-ZCT2, CUH-ZCT2U New 2016 Version(with small Connector) : Video Games
How to replace a PS4 controller battery | Android Central