MiBoxer is supposed to be having a new charger coming out, the C2-4000, that will do 4 x 26650 at 2A each charge rate.
It should also do 4 x 2A discharge rate & show capacity & IR on all 4 slots from what I have been led to believe.
They have just started a thread about it in the charger forum although the pictures do not show Miboxer new charger release C2 4000 & there is no spec listed as yet.
It might be worth looking at for those that want to charge 4 x 26650”s simultaneously & at 2A.