Researchers build aluminum battery that can be charged in one minute

The aluminum-graphite battery being displayed in the video (and in the post) sounds a little too good to be true. It's flexible, safe even if drilled, rechargeable in minutes, made of environmentally safe materials, and theoretically cheap.

I assume somehow it'll be found to kill puppies every time your recharge it.

Something has to be wrong with a battery like that, right?