Recently I had to factory reset my phone because it'd become sluggish for unknown reasons and a fresh start has really helped.

However, in order to get it to see my watch (LG G Watch), I also had to factory reset the watch so it would pair. No big deal, right?

Except I used to have "always on" on, Brightness at 3 or 4, and I'd go to sleep after a full day with a good 40% battery left prior to reset.

Now sometimes the watch will die mid-day... today it died at 2pm after coming off the cradle at 10am!

Has anyone seen anything like this before? Any suggested course(s) of action?