I understood the logic, what gets me that it confused me with left to right. Since i posted this question i looked at the reviews of this charger with pictures of battery loaded chargers atcouple ofreview sites. Though all these reviewers emphasized left to right loading for bigger to smaller sized batteries but one reviewerpicture looked as if larger batteries loadedfrommy left to right and the other reviewer picture looked opposite. I wondered i am not the only one confused with this situation.
It would have been simple just tonumber the slots.