How many batteries are drained in one day?

As I wrote above. You probably have a defective battery. I always have a full charge for at least one day.

One last question and you only have the home screen with an hour and a battery? No backlight if you press a key?

and where can I report a defective watch battery?

I sent the application, we'll see how it ends.

When I look at your watch, I envy you that it keeps you for so long.

So you say it is NORMAL to have 221d battery left time? On mine currently there is 171d but that seems far too much still. Truth is I have everything possible disabled, but still is this estimation RIGHT??

The number of days displayed is an estimate. If the watch had been exposed to so many hours in the sun. On average, I add 3% of the battery in 6 hours in the sun, so it's real, if that's the case. As soon as the sun does not shine, the estimate is immediately shortened.

Not with mine. Since yesterday my display shows 'infinity' although the battery icon shows that the battery is not full. This is not normal, it should display the remaining days correcponding to the battery charge.

The endurance of Instinct Solar is fantastic. The last charge was on September 15, tonight I'm charging them on October 18. I had a 5% battery. So for another one or two days, the watch would last. But I need a GPS tomorrow. So the fantastic 33 days lasted! GPS activity only one, about 2 hours. 10 indoor activities without GPS. The sun has hardly shone for the last 14 days. Watch 24/7 HR, oxygen measurement switched off. Daily monitoring, sleep, heart rate, alarm clock, etc ..

Even though I was saving my watch as much as possible, I only achieved 17 days and you used the alarm clock, 10 workouts and it lasted 33 days (a mega achievement). I will advertise the watch based on your post.