To be honest. I do not think that banning a member for making a false remark is really correct.
Afterall, mistakes do happen.
Of course it is up to the moderators in the end.
That said, microcontrollers generally will not work properly at 6.24v and can even be damaged in some cases. IIRC the absolute maximum rating for Atmel chips is 6.0v but don't quote me on it.