Ah okay, so something that somehow hops over his defence would NOT count towards his stacks of Charged?
Correct. Anything like that wouldn't be a direct attack, and would be something like a psychic attack or otherwise affect Void in a way his powers wouldn't be able to protect him against.
Just as a note, if hit with multiple attacks on the turn where
Void Burst was activated it's possible for Void to get stacked with even more stored energy. When facing an opponent with a gatling gun, for example, Void might be hit with five strength 4 attacks, none of which would get through his defences but all of which would
Charge him, giving a total of 20 stored energy.
The other important thing is when sending the healing pulse Void wouldn't be affected by it himself, since the pulse would be pushing out from his body, not being directed into it.
You could alter the power slightly to give the choice for Void to absorb the energy into himself as a self-heal ability, but the rest of the team wouldn't benefit. Since you went for the Energy cost of 8 for the ability I'd be willing to give a double elf-heal effect if the stored energy was used in this way.