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How big does a Li-Po battery has to be to absorb a lightning bolt?

  1. Jul 15, 2012 #1
    What I'm asking is not strike and dissipate, I'm asking really capturing and storing the energy for later use. I mean are we talking more than cubic kilometers?

    I know a thunderbolt is just regular, really high power DC but if 220V@10,000W can be bottled in a less-than-half-a m³ UPS, why is it more than just a matter of scaling the system up?

    I also know that lightning doesn't strike the same point twice but at a big size, a so called "big battery" can have like thousands of antennas and sit in a place like Canada where it rains a lot.
  2. jcsd
  3. Jul 15, 2012 #2


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    Staff: Mentor

    If you forget about all technical problems you can get a crude estimate by dividing amount of energy in the lightning by the battery energy density - something in the range of MJ per liter.

    Not that it makes you any closer to really storing the lightning energy.
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