Originally Posted by
duke_of_hazard
Thanks for all the replies, I take it the answer to my question below is no.
Is the charger smart enough to know to only charge the dead one and not overcharge the already charged one?
A charger that charges cells in pairs, takes the pair connected in series. A smart charger will usually figure out that something is wrong and refuse to charge or will switch to a trickle mode. It has no means of disconnecting those cells from each other. The dumbest fast chargers have only a time cut-off and will try to proceed with an unclear outcome.