I would like an answer to this question also. Surprising and a little disappointing that the question is two years old and there is no response.
There has been a lot of discussion related to this, However, it is unlikely that you will get an official answer from Garmin here. If you want this feature, you can submit your request using the Share…
Same here. Most probably very easy to implement. What are you waiting for Garmin? please add the watch battery status in Connect and Connect IQ
I recommend reaching out to Product Support through their website at https://support.garmin.com.
Or suggest it to Garmin at Share Ideas | Garmin