328
The Sodium-Ion Battery Revolution Has Started (cleantechnica.com)
submitted 1 year ago by to c/technology@lemmy.world
77 comments fedilink hide all child comments
 

" 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. "

you are viewing a single comment's thread
view the rest of the comments
[–] 12 points 1 year ago (3 children)

I keep my car charged to 80% to help with battery degradation, and here's why:

  • Most days, I don't use more than 30% of my battery capacity (roughly 75 miles/120km). Even that's high. I don't care if that means I go from 100%->70% or 80%-50% when I'll charge back up again overnight

  • It's not a permanent setting! If I do go on a longer trip, I'll bring it back up to 100% and not sweat it!

From what I've heard, charging beyond 80% increases the degradation rate, meaning time spent at that level is an important part of the equation. If I keep my phone plugged in overnight and at my desk, I have a lot of time at full charge that I'm not really using, but if I know I'm flying that day or running errands all day I can pop it up to 100% and it will be a non-degraded 100%

I've had my S20 far longer than my car and never did limit its charge. It's fine for me, but the battery is sure showing its age.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 3 child comments
    •
  • [–] 1 point 1 year ago (2 children)

    I don’t see this as a valid comparison.

    • replacement phone batteries are really not that expensive. Don’t overthink it. Is it really a problem you might spend $50-$100 in three years to replace the battery?
    • car batteries are not just much more expensive but they’re also overkill. Charging to 80% is more than enough for almost everyone’s daily driving on most vehicles, so why charge more?
  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 1 point 1 year ago* (1 child)

    Maybe user replaceable phone batteries are making a comeback, but with the way my phone is pretty much sealed up I wouldn't trust myself to not break it. I'd also be leery of a third-party replacement lithium battery of unknown quality (let's be honest, that's what you'll probably end up with) charging right next to my head while I sleep. Saying that as someone whose friend had a lithium battery fire with her laptop.

    Point is, the argument of "why would you try to save your battery by not using it when it has the same net effect of less battery?" is pretty short-sighted.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
  • [–] 1 point 1 year ago* (last edited 1 year ago)

    User replaceable batteries would be actual cheap, would be nice. But iPhone 15 pro battery replacement at Apple is $100, and I’d expect that to be one of the more expensive battery replacements. Many phones will be cheaper, third parties will be cheaper. While I’d rather do it myself, it’s really not that much for once every three years to keep it above 80% health, and 9% of phone replacement cost.

    the argument of “why would you try to save your battery by not using it when it has the same net effect of less battery?” is pretty short-sighted.

    The argument is

    • why try to save your phone battery when it’s critical to last the day and eventual replacement is cheap?
    • it’s much more important to save your car battery because you won’t miss reduced range on normal days, you want max range available for road trips, and replacing the battery is very expensive
  • permalink
  • fedilink
  • source
  • parent