I put my Sense 2 on charge and removed it once it was 100% charged, it lasted several days without having to charge it. I was doing 2 walks per day that were automatically picked up and recorded and used the ECG function 3 times, however, after charging the Sense 2 again at 7% to 100% and repeating my same exact routine, I got an alert via email the next morning that my battery was low 8%. This was less than 24 hours from charging it, I recharged it to 100% again and this time it lasted 3 days going down slowly for 2 days 100% to 80% then on the third day 80% to 5% in 24 hours? After charging again the battery was at 100% after several hours and a Walk the battery was at 96% then just before bedtime, I got an email that the battery was low 12%. This is not logical; I can do the exact same thing each day and get different battery longevity results every time. What is going on? I am on the latest Firmware 1.184.52.
I have noticed that sometimes when I look at my exercise the map is incomplete, where the GPS started logging late, and I have also noticed that after exercise the Sense 2 does not always Stop and record the exercise, it just pauses it for hours sometimes and for minutes at other times, my only suggestion is maybe the Sense 2 is pausing the exercise instead of stopping it and it keeps the GPS on until the exercise is either automatically terminated or manually terminated. This may account for the randomness of the battery life, or something is happening to it overnight.
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