this post was submitted on 18 Sep 2025
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CATL says next-gen sodium-ion battery supports 500 km range, readies for 2026 mass production (carnewschina.com)
submitted 12 hours ago by schizoidman@lemmy.zip to c/technology@lemmy.world
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cross-posted from: https://lemmy.zip/post/48958993

energy density of 175 Wh/kg

CATL explained that sodium-ion batteries have slightly lower energy density than lithium-ion batteries but provide distinct advantages in low-temperature performance, carbon footprint, and safety.

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[–] scarabic@lemmy.world 1 points 2 hours ago (1 children)

It’s a ballpark number. It says to me “competitive with LiIon on capacity though not beating it yet.”

[–] davidgro@lemmy.world 1 points 1 hour ago

It's not though. Range is determined by how much battery is in a car, I could build a car with 500km worth of Ni-MH but it would be mostly battery.

Does the same car with 500km worth of lithium batteries have more or less trunk space than 500km of these batteries? I have no idea. I do know the sodium batteries will weigh a bit more, because the article actually gives Wh/kg - and that makes sense since sodium the metal is denser than lithium, but the headline is meaningless.