Hi,
I have problem with some kind of HRM issue (probably). Maybe month and half ago after connecting to pc begun problem with HR sensor. Wrist HRM stopped flashing during inactivity and light is still in "on" mode even with Automatic mode. It's ok, but because of this issue, my Fenix 5X can hold only 1... maybe 1 and 1/4 of day on battery. When I disable sensor, watches have 62 % after 4 days. But when I turn sensor ON and charge them on 100 %, after 5 hours is there only around 68 %. I tried turning watch off, soft reset, hard reset, downgrade FW from 25.00 to 24.10, charge watches to 100 % and wait for recalibration of battery... but nothing help :-( I don't know what else I can do, cause my Epix (gen 1) can hold on battery for 12 days without charge.