The problem with debating the article, which is, IMO a good one, is that people having a different opinion "know" they are right, even if they are not. You have the people that know little or nothing that often quickly believe that what's wrong is right. There have been numerous articles written by battery manufacturers and testing labs that long ago provided the data references for the articles like the one you linked to be built upon. There are no new findings in the article and barring a couple of inconsequential opinions it's a re-write of all that has gone before. However, it is very simplified in order to permit those with less advanced reading skills to comprehend what they are being told.