I had a slightly different issue. I had a Samsung Smart Watch (Samsung Gear Live) the charger was a cheap custom POGO pin cradle. After a month of use the cradle assembly cracked. I contacted Samsung for a warranty repair and they were going to charge over $50 to replace. I decided not to get it replaced and sold the device on eBay.

Couldn't they just use a standard USB micro interface or Qi standard charger?

I have not purchased a Samsung device since.