Hey @Cosmicwee ,
It's hard to say without hands on it. However, I would happily take a look at this. Can you let the battery drops under 50% from a full charge and send us a screenshot of the battery usage? You can get this by following these steps: launch the Galaxy Wearable app > About Watch > Tap the Battery icon in the circle > Take a screenshot of the graph and top 5 apps and send this in.