I totally get how stressful it is to never know what kind of charge you’re going to start the day with. I have Phonak Lumity Life rechargeables and have to always give the aids a little wiggle when I seat them in the charger. Just cuz the light comes on the aids, doesn’t mean they are correctly seated for recharging.
It could also be that your charging base is malfunctioning. Try plugging it into a different outlet. Is your current power outlet turned ON and OFF with a wall switch? That can be a factor if the base isn’t receiving any power.
Finally, can you possibly get a loaner pair of aids while you turn these Lumities in for repair? I have a pair of Lifes going in cuz the battery went from 17.5 hrs a day to just 13 hrs.
So your issue could be multi-factorial. Take it one step at a time and let us know if you find out the cause.