1) sorry, you can not change the batteries without removing the rubber feet. It remains to find the right batteries for the future. 2) eating over the keyboard is not recommended, just like over a laptop) 3) I was very upset by the inability to customize the keys for switching between devices (I thought I would push the 1st by default to screenshots, and the 2nd and 3rd to switch devices). But everything turned out to be more trivial, the button with the camera icon is responsible for this. ctrl+photo = run joxi , yay. It remains to develop a reflex. I would not refuse a touch bar, as in a macbook, well, or a couple of keys with led screens, into which you can shove your icon and a combination on them. In general, an excellent keyboard, unlike its pair of mice. We are waiting for the 4th mouse model.