When I first got it, the battery on my Apple Watch didn’t last throughout a day. I knew that I had to charge it every night before I bought it, but I thought it would have lasted me all day. Now it does. Don’t kill the functionality that you want from an Apple Watch. Instead, pick and choose the things you don’t mind loosing, otherwise the watch might just be somewhat useless to you. So here’s a list of the things I experimented with: Put the device into Power Saving Mode: OK, so this basically kills the use of the watch. You could also put the watch into airplane mode. This stuff…