He is an INTP.
He is usually typed as an ENTP.I was wondering why ENTP...
Principally because of the notoriously scattershot Dr. David Keirsey. In his typology, ENTP is the "inventor", and it probably would look ungainly for the king of inventors to be tagged as anything else. As a matter of fact, his son concedes that under MBTI typology, Tesla would come out as an INTP.
Real Idea Men | Please Understand Me
That said, I don't get the INTJ arguments for him, either. Is it because of the first two letters of his first and last names? The Ni is defensible, but what evidence is there of Te?!?!
With the possible exceptions of DaVinci and Einstein, no one springs to mind quicker when Ti-dominance comes up as a topic of discussion. Unlike his pal Edison and others whose inventorial methods resembled little more than blindfoldedly throwing darts and hoping for a bullseye, Tesla was more wont to do all the nitty-gritty in his head. Didn't hurt that he was a math whiz, but still.
Oh, and what self-respecting ENTP would be celibate by choice? If you're a believer in the snowflake theory and that an Ne>Ti>Si>Fe strain of ENTP exists, then maybe...