lithium ion car and motorcycle batteries

I am only speculating that the internal circuits may do this; it is by no means known to me. You would not be wise to make that a hard conclusion just because it sounds plausible. Read the links provided...... it discusses the internal circuit boards being there to equalize charge between cells that are linked in series inside a battery.... no other function is mentioned. That has nothing to do with paralleled batteries.

Time has to pass for some problems to show up and even more time for lawsuits .... so the time factor is not proof of anything.