Found that when I place my AirPods 2 on my Mophie Charge Stream Pad+, the white light on the Mophie initially lights up but then starts flashing after a few seconds. According to the manual this indicates the Mophie has detected a foreign object such as keys and has turned the power off to protect itself. I contacted Mophie support and they replied "The charge stream pad+ is not compatible with the Apple Airpods." A shame as both devices are supposed to be Qi compatible and they even sell the Mophie in the Apple Store. I also have the older/cheaper Mophie wireless charging base and the Airpods charge okay on this.