Although this post is dated, I figured I would continue on, instead of creating a new thread.
With the release of Gen3 and one of my Gen2 coming up to end of warranty I figured I would see if I could assess the battery health and wear level on my 2 CM45 smart modules.
Using the adb command I side-loaded an Android smartphone app called AccuBattery on to both my CM45s.
https://accubatteryapp.com/
Watch #1 went into service ~ August 2017
This watch is my daily driver(heavily used and abused). I wear this watch; surfing, offshore fishing, golf, crossfit, lawn/pool maintenance along with just everyday wear. It gets a lot of exposure to saltwater, sand and sea air. It has had a lot of charge cycles. I am charging more than every other day so definitely more than 500 cycles so far. You can see below a heavily used watch is showing about a 10% loss over > 2.5 years if it started @ 400mah.
When I can I am now only charging this watch to 80% to extend battery life, but overall I am very happy with the battery health of this watch.
View attachment 954172
Watch #2 went into service ~April 2018
This watch is mainly worn for business, business travel, social occasions & etc. I am only charging this watch 1 - 2 times a week and sometimes it is powered off for several days. At this point I am probably ~250 charge cycles at almost 2 years. I need to get a few more charge cycles on this but I am pretty happy with the results. I think this is also a good illustration where some components perform beyond specs.
View attachment 954189
I am going to keep monitoring both watches to end of life to see how well these Gen2 hold up. As long as we keep getting WearOS and app updates I am thinking my #2 watch might go another 3 years.
Hope this gives some other Gen2 users some incite into battery health and wear while they continue to enjoy their Gen2 CM45.
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