Hi
The new + sign which tells us the battery is now charging on Koreader will be helpful.
I also found the use of the "refresh" button on KSM 07 (as described above) to be quite convenient.
I will resume testing as soon as the level of my battery falls under 40% so as to eliminate the possibility of any borderline effect (like "testing the charge"). Now it's 56%...
I will also count the number of pages turns needed before getting a refresh of the battery indicator.