Board Thread:Naruto Discussions/@comment-9782468-20170118003542/@comment-4080775-20170118054810

Because they are clones of Naruto, their chakra would be naturally restored over time at the same rate as Naruto's. But yeah, if given enough time, their chakra would eventually be restored to the same maximum as the original Naruto. I think it would take more than an hour, but Senjutsu boosts all of the body's capabilities, so in theory, their chakra would be restored much faster. Thought the main problem lies in the quantity of natural energy within the area they absorb it from.

Kurama in the last battle against Sasuke gave Naruto all of his accumulated Natural energy within the area, so it would be logical if the same thing applied in this case.

Also, because every person can hold a certain maximum of chakra, dispersing a clone with max chakra will not give you any more chakra if you are at your max capacity for chakra. You'd simply waste it. In such a case, it would be best to simply make the clone preform the technique you wanted as to not waste your own or the clones chakra in case it was destroyed before said tech was used.