@Gordon I hate to bother you again. The replacement of my Bangle2 through @Christine worked just fine. But now I got another issue with the new Bangle2.
It does not seem to charge anymore. I only had to charge it about three times until now, which worked fine.
I checked the pins on the cable, it shows 5.09 volts across the outer two pins. But the watch does not vibrate upon connecting the cable. Also Bangle.isCharging() shows false.
I updated to 2v16 before it completely drains. I turned it off so to save some juice. Is there anything else I could be checking?