Apple Watch Series 2 Dies Mid Workout

Hi community,

I have recently run into some major errors with my Apple Watch Series 2. I purchased the watch a few years ago and it has been so handy that it has replaced analog watches for me. Over the past month however, my Apple Watch battery has drained significantly faster than ever before. I have gone through and changed settings to help my battery last longer, it now is at about 60% life at the end of a workday. When I get home I immediately work out and have noticed my watch dies mid workout, despite having 60% life. As soon as I put it on a charger the watch pops on and shows 50% battery life remaining. Long story short, this is getting frustrating because I am losing track of my progress since workouts are not saved when it dies! Please help!