Does One for All give unlimited power?
One for All gives unlimited power?

No, it doesn't. You can't just get 101% power, where is the extra 1% coming from? Out of nowhere? Nothing comes out of nothing! By 100% power, it means the power of all the successors of One for All (as far as I understood).
Thus again, it is impossible to get unlimited power.

And if you based your question (clearly you did) after watching Midoriya using One for All at 1,000,000%, I would ask you to think of it again. Can Midoriya even use 100% of One for All in his current condition?


   Clearly Midoriya can't even use or control 50% of his power (or let's just agree that he can't use his full power yet without arguing on the percentage)




Now it's time to unravel the mystery. How did Midoriya use 1,000,000% of One for All? Without saying a word, I will just post a picture of the Author explaining how he did that: