charging 2-12v batteries (non parallel/non-series using a 24v charger

[SuperChief]

I have been all over the web to answer this question. It pertains to separate non connected 12v batteries that I can charge with a 24v charger (2-10 amp). These batteries are in separate cases with the series connections somewhere in the internal wiring of a mobility scooter. I know is not the right forum for scooters but in theory seem to be a question for this thread. I want to maintain balance on the batteries. If I make a sort of bus-bar to put these two connectors on the battery cases into series would this work?. I am trying to make this make sense for electrical gurus on this forum.