take the thing apart wtf that tech would end fossil fuels just think one for the house one for the car and only needing one forever oh oh and you don't need to charge it back up....  this is crazy,(reply>), @wesnxs well yes, the lithium ion battery would charge, same problem, it would take many months for it to charge an electric car to full. It won’t work at all. There isn’t a practical use at all.,(reply>), @Ryan S what about using them to recharge li-ion polymer battery cells  in passenger cars like an over night charger   the total amount of discovered copper to date is 2.8 billion metric tons,(reply>), @wesnxs you would need a way bigger version of this to get enough electricity for a house, the amount of power it can provide is way less than you think. It may even be worse for the environment, how will you get all the zinc and copper. It’s a step down from what we have now. If you want clean energy for your house, you can get solar panels and large batteries from Tesla’s website, and it doesn’t take multiple millions of dollars. Really the technology in that battery isn’t amazing. It’s just a old battery that’s powering a really tiny mechanism. There isn’t enough zinc and copper on earth to switch a small town from fossil fuels to batteries like this, let alone the world. It isn’t practical at all.,(reply>), @Ryan S I'm thinking more like the size of shed for power use in the home or again to be sized up for use in cars even if all it did was power a small slow charger for the battery doing the real work like a over night charge,(reply>), @wesnxs it still wouldn’t be better than regular batteries. If you were to increase the size enough until it does, it would be impractical. There is no way this can power anything useful until it is the size of multiple backpacks.