this post was submitted on 25 Feb 2026
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[–] UnderpantsWeevil@lemmy.world 9 points 1 day ago* (last edited 1 day ago)

TNT has 1162 Wh/kg ratio.

How do you recharge TNT?

We are hitting the limit what is doable with energy density.

I mean, we're definitely running into a problem of how you build a battery without also building a bomb. But the entire point of TNT is rapid thermal expansion. The point of a battery is very low voltage steady release of electrical charge.

I might also note that C4 has around 6 Mwh/kg. A bit of applied chemistry can go a long way to improving energy efficiency. And that's before you take advantage of geometry to focus pressure, via a shaped charge.

Point being, there's a lot of clever ways to juice a lemon. We're a long way from the end of the road on battery improvement.