Congratulations for the use of a very unusual word: D I S T I N C T I F I E S . According to the Urban Dictionary, the word distinctify is: "A totally logical conjugation of the word distinctive that is not included as part of the English language so that assholes can feel intelligent by correcting people about something trivial." I knew you were highly knowledgeable about tools, Catus, but your extensive lexicon is also quite impressive.
Wouldn't be surprised to learn it is one and the same. A lot of things are multi branded by the same manufacturer.....somewhere in the bowels of China.
Never even occurred to me to worry about it. I don't use it every day and my batteries last between 3 and 4 years. Literally. I have the 9v laying around anyway since I use them in older smoke detectors in my home.