Vivoactive 3 updated to v 6.3. Battery drain unacceptable. It used to last 5-6 days. With all the latest software dates it now lasts 30 hrs....no changes made to my settings. All notifications turned off, sync turned off, wrist monitor HR set to smart, all other sensors off, all 3rd party software deleted, backlight set to 20% only on touch. I do not use it ever for getting calls, messages, weather, music control, etc. From full charge 30 hrs ago I am now down to 16%. My product is 16 months old since new and I have always used it in such a way that I rarely use the GPS function, never notifications, low backlight setting on button push and I would get the 5-7 days Garmin claimed. I only charged it when less than 10%. Surely not a battery failure since this problem suddenly occurred with software update. Please fix it and restore my watch Garmin. Let me go back to the earlier software version. My wife's Fitbit is looking mighty tempting if you can't support a product that can only last 36 hrs between charges. I'm guessing if I turned on notifications and took a jog with GPS it would last only 3-4 hours from 100% charge.