Naruto 538

I've just finish reading Naruto chapter 538 and the kyuubi has replenisht his chakra from the looks of it aswell.
He was reduced due a state of chakra loss that he startet to lose his skin..

This makes me wonder, the chakra naruto stole.
does this amount refill sort of or does it run out and he will have to start all over again en steal chakra from the kyuubi again??

Naruto Chapter 538

You can read it online at MangaStream