At what power (how many watts) does the 30 seconds apply?
To replace the battery only the two orange 2.5mm screws need to be removed in this step.
No, you don’t need that. You can just remove the clutch cover as explained in the comment by fei ro.
I have proposed an updated to the guide explicitly describing how to position the hinges and then slide the clutch cover and then lift it off without tools. But that improvement to the guide has been denied by Jeff Suovanen. Not so much wiki over this website anyway…
Good observed. That comment really helped me to open up to the hinges… Thank you so much