if you are new to charging or dont kow how to organise your batteries to know which are charged or uncharged, then just dont use step (ctx) charge mode. the benifits are minimal (if at all) whereas the downside is huge if done wrong.
anyway, just dont remember not to use the ctx mode for repeaking. if you name your profiles right it should never happen.
alternatively just repeak the batteries while the heat before yours is half way thru, then re-peak should take at most about 200mah (2minutes at 6amps) so whilst its repeaking you watch the UP/DOWN voltage arrow.