Unplug the HyperX ChargePlay Duo PS4 Controller charger power cable plug to reset the base. Plug the power cable back in and inspect the controllers on the base. Check that the controllers are seated properly and register when they are plugged in to charge. 

HyperX is committed to stand behind our products and the release thereof. To ensure innovation and quality while seamlessly validating they are free from defects in material and workmanship.

The following HyperX product is covered by this warranty and extended to the original end user customer for a duration of two years from the date of purchase: ChargePlay™ Duo.

If you experience difficulty during the installation or subsequent use of the ChargePlay™ Duo, please contact HyperX Technical Support for assistance.

We provide free technical support to our customers worldwide (English).
For support over the Internet, visit https://hyperx.com/pages/support
HyperX Technical Support in the United States and Canada can be contacted directly by calling. 
1 (844) 464-9737