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I'm still not sure how they're claiming increased energy density. From what I know, the energy is directly proportional to the amount of lithium in a battery. In a lead-acid battery its directly proportional to the amount of lead you have. So, unless they're able to make everything else that much lighter (and IMO it doesn't seem that way), the energy density is going to be pretty close to the same. But, they're claiming almost DOUBLE the energy density. Obviously I must be missing something here.
I think the real advantage here comes from power density, which would have absolutely no benefit to small electronics.
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