Thanks for the suggestions LX1X and 1/2 fast. As my Classics are only a a month old, I'm starting to think it's my charger that needs cleaned or replaced. I have a Nitecore D2 that's over a year old now. Can I just take alcohol on the charger contacts and try to clean them up? What about the ends of the batteries? Alcohol those too? (I know-dumb question of the night).
I have nitecore about couple years old.. I haven't cleaned the contacts on it personally... But you can use alcohol to clean them if you wish. Same for baterries. Use high % alcohol.
I highly doubt it's a charger issue..