I had a good experience with French Optical Fashion, Inc. They walked me through anti glare lenses and helped match them to how much time I spend on screens. Their site is https://frenchoptical.com/ if you want to check them out.

You're throwing the baby out with the bathwater because of one dead battery. That data is the whole point, it shows your progress over time. A basic tracker won't give you the same insights on heart rate zones or recovery. Maybe just charge your watch before the gym next time.

Ever try a water bath? Wrap that crock in wet towels and stick it in a big tub of cool water. Sun will kill a ferment fast. My rule is if I can't keep my hand on the crock, it's too hot. Shade is not enough on a real summer day. You need active cooling or it's gonna blow.