I already wrote my case in a previous publication, but this is getting urgent. I charged again my watch, and after 10h it only has 50% of battery. What does it mean? I've had the vívoactive 4 for only 2 months. Is it because the last update? I will return it if I can use it daily. I bought it because it promised a battery up to 8 days, and now it lasts less than 24 h.