OK, thanks for info about in-correct battery information, so waiting to be corrected...
Maybe there is also an other bug I found...
In Avast Account page, going to Reward/Badges and mouse-over, there is a white rectangular box poping up... "without any text in it"...
Some boxes show "install" in green, but no other text at all...
Could this be related to some minimal needed flash or java-version to be installed?
I beleve to have seen there was also text before last week... now this text is not showing any more.