I just read the following over at Latino Review:
In “Crank 2,” Chelios faces a Chinese mobster who has stolen his nearly indestructible heart and replaced it with a battery-powered ticker that requires regular jolts of electricity to keep working.
I really enjoyed Crank. Sure it was a bit dumb but it was one of the funnest movies I’ve seen in a long time. Since reading this I have been trying to decide whether to shake my head or to laugh out loud. There really is no other way to keep both the story and Chev Chelios running. Yes, it is very dumb but hopefully they manage to keep the same pace of the first one without it becoming too stupid. I’ll definitely give it the benefit of the doubt based on the first one and if it does suck I can always go back to the time when Chelios just needed adrenaline to stay alive.