I have a power aid and custom mold in my right ear; a custom mold in my left. The right is heavier than the left. When I put my aids in the charger, the left (lighter) aid always gives a consistent green blinking light. The (heavier) right will initially show a green blinking light, that most often will stop after a few seconds. the weight of the mold will unbalance the battery connection and stop the charge. I’ll most often (!) have to fiddle with the balance to keep the right aid charging. For example, I’ll put something under the mold to hold its weight. then, it charges as normal.
I wonder if something like this isn’t behind the issue. It’[s not the charger. it’s loss of contact with the aid with the charger. The magnet holding the connection isn’t strong enough. Users see the green light when they put their aids in the charger, and don’t wait to see the connection has failed.