Don't believe the Jeda hype when it comes to its charging speeds and compatibility with the Pixel 4. The fastest I ever got was close to 3 watts. I tried two different socket chargers, battery banks, desktop and wall chargers but no such luck. I was concerned I had a defective unit so I contacted them and they were responsive for about two emails and after they had me do some troubleshooting they went ghost. I haven't heard from them since and I've contacted them on a daily basis and even submitted a new request on their website. Its unfortunate because their USB Hub is awesome but after this experience I wont be giving them any more of my heard earned money.
I also bought the Nomad to test the charging speed with my Pixel 4 and it does charge it slightly faster but not fast enough to charge it to full while in use, it'll keep it charged at about the same level you start with. After doing a bit of research (I wished I would of done this before hand), I found out that although the Pixel 4 is not restricted like the Pixel 3 was regarding 3rd party wireless pads it does require a charging pad to support Extended Power Profile or EPP for short.
According to the
Wireless Power Consortium, neither the Jeda, Nomad, or Tesla pad support EPP. Although, according to the consortium a new Tesla pad that supports EPP will be coming soon.