Chosen Solution
Bought it used a year or two ago. It worked fine until a few months ago when it stopped charging. I assumed that the battery had just gone bad. Bought a new one, installed it, and it still won’t charge. So either the new battery is faulty or something else is wrong with the watch (either from age or from when I opened it up). It is probably not possible to troubleshoot any further, or not cost-effective as the part that is probably bad would cost more to replace than the watch is worth. Thoughts? P.S. There is nothing on the display to indicate that the battery is charging. I also tried another charger to make sure that the charger was not the problem.
This gets tricky! You could have a bad battery, the induction coil is bad or the S2 SoC logic is damaged. I would get a USB power meter to put in series with the charging puck so you can see what is happening when you place the watch on the puck (start off with the puck alone) take note of the steady state of current draw. If it doesn’t change it’s likely the puck or the watches induction coils are not working. Try a second puck if that still fails then it’s likely the watches induction coil or the battery is bad.
