BJS2, drop in battery life since update

It's interesting you're hitting issues. I didn't see any big issues, and watches that I keep mostly disconnected here with standard-ish clocks (pebblepp, twotwo, anton) still seem to last around a month.

Thanks for that debugging - I do see this:

Time	Percentage	Device
18h37m6s	74.62%	LCD
12h20m34s	52.21%	HRM

So I wonder what your HRM setting are set to? One thing that did change between the KickStarter versions and now is we use the manufacturer-provided heart rate algorithm which it a lot more stable/accurate than the open source one. The poll rate for the HRM sensor may have also changed (especially if you had an early Bangle.js 2) so that could be affecting you