User blog comment:Xilinoc/Ch. 580 - THE LIGHT/@comment-24913480-20140514092956/@comment-11051098-20140514212058

Yeah, but even though Shinigami can take much more damage than humans and survive, Kenpachi would be too OP if he could survive a lightning strike that might surpass 1 million volts for all we know, + a powerful punch right into the ground, and STILL being able to fight. Especially considering that he was already injured after the fight with Gremmy.

Even Kenpachi has a limit, although what kind of attacks drove him across it could be questionable. Either way it seems he won't fight again for a couple of chapters.