I can charge the keyboard, only via the original Surface Charger, which came with the device. For me its unacceptable that none USB-C docking stations, is not enough for it. I would expect that I can decide that if the wattage is enough to charge surface, the surface should re-charge the keyboard, when its on 100% at least. But not.
MS is not doing any usc-c docking stations, I had the older surface speaker dock, and which is directly from MS, Surface line, and this works even worse than to compare to HP or DELL usb-c docks.
The whole Surface Pro 11, and the flex keyboard is a terrible experience.