Unfortunately, I have had poor battery life after the March update. Mostly from Google Play services. I turn off autosyncing, denied location request from most apps and even cleared cache and data. It went from using 2-3% of battery to using 10-16%.
PS. Deleting the data on google play services forces you to reset your galaxy watch so back up your watch data on wearable before you do it.
PS. Deleting the data on google play services forces you to reset your galaxy watch so back up your watch data on wearable before you do it.