this post was submitted on 06 Jun 2026
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CATL claims its lithium-air battery has energy density similar to gasoline (www.arenaev.com)
submitted 4 days ago by schizoidman@lemmy.zip to c/technology@lemmy.world
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[โ€“] MalReynolds@slrpnk.net 16 points 3 days ago (1 children)

Clickbait title. Goddard's law applies to the implied question. Relevant bits...

The theoretical energy density limit for lithium-air systems is 12,000 Wh/kg. Gasoline sits at roughly 13,000 Wh/kg, and modern laboratory battery prototypes have reached more than 1,200 Wh/kg. That last number is four times higher than the 250 to 270 Wh/kg capacity found in mainstream electric cars today.

It's a pretty interesting tech, regardless of CATL.

[โ€“] Krelis_@sh.itjust.works 10 points 3 days ago

To add, modern engines can utilise about 3000 Wh/kg from gasoline