this post was submitted on 23 Oct 2025
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" CATL has thrown its hat into the ring with the Naxtra sodium-ion battery, with 175 Wh/kg and 10,000 lifetime cycles along with operation from -40°C to 70°C. CATL is planning a start-stop battery for trucks using the technology. It has the potential to replace lead-acid batteries. CATL has announced battery pricing at the cell level in volume at $19/kWh. "

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[–] khannie@lemmy.world 79 points 1 month ago (29 children)

For anyone wondering what "10,000 lifetime cycles" means, it's full charge / discharge to the point that the batteries are at 80% of original capacity so 10,000 is to me an absolutely incredible number.

A typical phone battery is rated for about 500 (you can massively improve this by not charging it beyond 80%).

[–] DupaCycki@lemmy.world 13 points 1 month ago (9 children)

A typical phone battery is rated for about 500 (you can massively improve this by not charging it beyond 80%).

This 80% thing is incredibly simplified and not even always accurate. Personally I charge to about 95% and my phone batteries remain at 98-100% condition after 2 years of everyday use.

Limiting yourself to 80% doesn't really make sense. You're losing 20% capacity instantly, instead of losing it slowly over a few years. To be fair, a lot of people treat their devices so poorly that they may hit the 80% in less than 12 months, so I guess there's that.

[–] village604@adultswim.fan 3 points 1 month ago

Not to mention that your phone is already taking these things into consideration.

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