I recently got my new watch8 a week ago and have been using it as i normally used my watch7, although I have found that the watch8 doesn't last as long as my watch7. They're both 40mm and I'm surprised that its doing worse. I know you have to wait for it to learn your usage patterns. But it's already done that and still has worse battery life.
They say that the watch 8 watches all have different size batteries in them. If I were you, i would let the battery drain completely to it go off, then charge it to full. See if that happens to fix the drainage problem on the watch. I get about 2, maybe 3 days with my watch. But I don't have the AOD on.
