Accuracy of Body Battery after a break to charge the watch

Whenever I take my watch off to charge it, there is a gap in my Body Battery reading for the day. The gap stops when I put the watch back on. There is no 'estimated' line on the chart. To me this looks like it can't calculate my score while I'm charging the watch, but manages to do so again once I put it back on. Seems reasonable. My partner is convinced that if you take the watch off for any part of the day, the Body Battery score cannot be accurately calculated afterwards because of the missing data, and so the score after the gap is estimated or just wrong. Does anyone have any definitive evidence to clear this one up (and help me win an argument!)?

0 flocsy🤠 over 2 years ago

Sure: you can either try the following or just do it as a thought experiment:

a. charge our watch while you go sleep for 2 hours

b. charge your watch while you run a marathon (in Kipchoge's pace ;)

Now I bet that in both cases the body battery will be the same for the 1st minute after you put your watch back.

Though it would still be interesting to see the few next hours, 'cause probably the watch will then "feel' the difference (HRV, stress, etc) between the day when you slept and the day when you ran.

However the most important advice I can give you (And I am a body battery freak, I even made this datafield: https://apps.garmin.com/en-US/apps/7a946b75-69d8-4594-8efe-b68d6ef84cb0) is: take it easy. Body Battery is not a precise measure in any means even when you wear the watch 24/7