Galaxy RM-810 will not charge, new battery, new charger

I replaced the battery, the dock, the cable, and the wall charger, but my 44MM Galaxy watch shows 0%, and the red light remains on, on the dock. I had the small metal cover resealed, and the glass replaced, but eventually, the watch just got hot and stopped charging. I replaced the battery, and the new battery allowed the watch to come on and work normally. Followed the battery supplier instructions, and allowed the battery to go to zero and shut the watch off before recharging. The watch sits on the dock, the charging light (red) comes on, but the watch never charges, it sits at 0%. Eventually, it gets warm. I never let it get hot. But it never charges.