I recently purchased a used Galaxy Gear s3 Frontier. The previous owner had the battery and the back replaced on the watch. I was told after the battery was replaced it began draining the new battery quickly. After purchasing the watch I bought another new battery as the old one would not charge past 10% before overheating. The new battery will charge to 54% no further and the watch overheats. Once the watch cools down and I power it on the battery will drain from 54% to 0% in less than 10 minutes. I've updated the watch and factory reset it with no change in performance. Any help on this matter would be greatly appreciated. I love all of my Samsung products and look forward to using this one as well.