@Rich, thank you. It seams that I had an old version, app did not update it, even when I have all watcher.tcz { .dep, .md5} files.
So I manually update it now from normal tc12_x86 repository, at version. 1.10.1:sudo umount /tmp/tcloop/watcher
sudo rm /usr/local/tce.installed/watcher
tce-load -iw watcher.tcz
watcher -bat BAT0
and it works now, sorry for the noise.
I did similar clean-up and fresh download for flit.tcz, from normal tc12_x86 repository. In apps info it says 1.3.2.1, but it downloaded 1.3.2.
which does not show proper battery charge: in flit is =zero, in watcher =87%B