6 Battery Charger

I’ve got a number of Ryobi 18v tools and invested in the 6 battery charger.  I’ve had it for 3 years and have kept my batteries in it without issue.  Today I went to use my 18v chainsaw and it wouldn’t stay running.  I tried a different battery with the same issue.  When I plugged the batteries back into the charger I noticed than none of the charge lights for the other batteries were on. There should be a solid green light indicating they are charged and in maintenance mode.  And when these were plugged in the low level light on them flashed indicating they were almost dead. I had just pulled them from the charger.  I pulled each battery and replaced it and the red light came on, indicating they were waiting to charge (it charges one at a time). The first one I plugged in was flashing green, indicating it was charging.

Since, one battery reached full charge and the saw now runs fine.  I placed the others on the single chargers I have so I can get them all recharged and I can do my cutting tomorrow.

So, evidently somethng happened and all the batteries were discharged while on the charger that was plugged in.

Anyone know what may have happened?

Random glitch. Hope it doesn’t become a regular thing. Sucks how disposable some electronics are designed to be.

I have the older flat 6 port charger. You have the newer model? The batteries would show solid green full charge but only charge 75% & die quicker than usual. And they would discharge when left on the charger when not plugged in. Does your charger have the blue maintenence/ reset button to restart charge cycle?  I have 2 gen 1 4ah with the red orange green fuel indicator and 2 newer 4ah with the green peg. On my single ryobi charger I have to flip it upside down while charging to get full charge on them???