I picked up my KS10s early this week. Since I paid for them and the order was entered just before the stop-sell order was issued by Costco, mine are likely among the last KS10s sold. (Since the problems were known by the time my order was processed, I’m told mine were thoroughly tested. I’m not sure that makes a difference.)
I discussed the matter with my fitter, and what he described sounded a lot more like a software bug regarding charging than any hardware issues with charging.
According to the fitter, the ‘fix’ is to simply do a reboot. (Described on p. 49 of the instruction booklet.) Just press and hold the bottom button for 15 seconds. The manual says it doesn’t matter if the aid is on or off, but my fitter said (I think) to turn the aid off first. And to press and hold for a good 20 seconds. Perhaps because there is no tone or light indicating that anything is happening or not.
Then with the charger plugged in, put the aid in the charger. Some time within 30 seconds the aid should start blinking green, indicating it’s ready for use. (At whatever state of charge it had when it glitched.)
So while the fix is not hard, not having your HAs ready when planned could be a pretty major surprise. If that’s an issue, planning ahead should be part of your fix.
Disclaimer: I’m new to all this and still haven’t experienced a glitch. Just passing on what I’ve been told.