5 ms·

This is a marketing fail. Should have claimed, 'charges to 100% in 15 minutes, and can be overcharged to 125% in further 2-3 hours'.

Al-Khwarizmi 4y ago
Actually I'd be fine with that marketing if all claims on battery life and autonomy were based on what they call 100% (i.e., the actual 80%).
rkangel 4y ago
If you do that, it skews all of your figures for "kwh per kg" and "kwh per m3". I'd suggest that those are far more important figures of merit for design of electric aircraft and vehicles.
devoutsalsa 4y ago
First commercially viable lithium metal solid state battery charges to 100% in just 15 minutes!* *using base 9
brandmeyer 4y ago
You may have meant this ironically/sarcastically, but it is entirely true. I'm a very happy owner of a fast-charging EV6. For longevity, slow overnight charging almost always just goes to 80%. I only need about 25% of the pack for my daily commute, and lithium battery degradation is dominated by time at high state-of-charge and temperature. For road trips, the battery charges up to 80% capacity in about 18 minutes on a fast charger (with some caveats when its cold). Charging rate rapidly falls off with increasing state-of-charge, so you're almost always better off just hitting the road at that point. But since you don't actually discharge all the way down to zero, the fast charge cycle realistically only takes 12-15 minutes. The only times that I've taken it to 100% (125%!) were immediately prior to a road trip segment on the overnight slow charger, or for a quarterly balancing charge. That's all with today's technology on a commercially available product. So this technology can only offer an incremental decrease in weight and/or increase in range.
teaearlgraycold 4y ago
Damn researchers being honest.
Gigachad 4y ago
Apple actually did this on the iPhones once. It was a PR disaster when someone found out charging past 100% did something.
- a_t48 4y ago
  Source on this?
- jtcruthers 4y ago
  I don't remember ever hearing this, and a quick google search comes up empty. Skeptical about this claim.
  - mavhc 4y ago
    Phones lie about being at 95-100% charged, because it's bad to keep charging them when at 100%, it stops, waits for it to go down over hours, and charges again. But then people complain it's not charged to 100% even though they left it charging all night, and because it's easier to lie to people than teach them stuff, they lie.
    - chopin 4y ago
      Or you just market your 1000 mAh battery as 950 mAh battery. But, uhhmm, honesty and marketing... If you can't charge the battery to 1000 mAh, then state so.
      - mavhc 4y ago
        You can charge it to that, but you don't want to keep it there, will cause the battery to age faster
      - fomine3 4y ago
        Note that Apple doesn't specify battery capacity spec on iPhone.
  - Tade0 4y ago
deleted 4y ago
[deleted]
8n4vidtmkvmk 4y ago
could also say it charges to tesla 3 capacity in under 5 minutes

Al-Khwarizmi 4y ago

Actually I'd be fine with that marketing if all claims on battery life and autonomy were based on what they call 100% (i.e., the actual 80%).

rkangel 4y ago

If you do that, it skews all of your figures for "kwh per kg" and "kwh per m3". I'd suggest that those are far more important figures of merit for design of electric aircraft and vehicles.

devoutsalsa 4y ago

First commercially viable lithium metal solid state battery charges to 100% in just 15 minutes!* *using base 9

brandmeyer 4y ago

You may have meant this ironically/sarcastically, but it is entirely true. I'm a very happy owner of a fast-charging EV6. For longevity, slow overnight charging almost always just goes to 80%. I only need about 25% of the pack for my daily commute, and lithium battery degradation is dominated by time at high state-of-charge and temperature. For road trips, the battery charges up to 80% capacity in about 18 minutes on a fast charger (with some caveats when its cold). Charging rate rapidly falls off with increasing state-of-charge, so you're almost always better off just hitting the road at that point. But since you don't actually discharge all the way down to zero, the fast charge cycle realistically only takes 12-15 minutes. The only times that I've taken it to 100% (125%!) were immediately prior to a road trip segment on the overnight slow charger, or for a quarterly balancing charge. That's all with today's technology on a commercially available product. So this technology can only offer an incremental decrease in weight and/or increase in range.

teaearlgraycold 4y ago

Damn researchers being honest.

Gigachad 4y ago

Apple actually did this on the iPhones once. It was a PR disaster when someone found out charging past 100% did something.

a_t48 4y ago
Source on this?
jtcruthers 4y ago
I don't remember ever hearing this, and a quick google search comes up empty. Skeptical about this claim.
- mavhc 4y ago
  Phones lie about being at 95-100% charged, because it's bad to keep charging them when at 100%, it stops, waits for it to go down over hours, and charges again. But then people complain it's not charged to 100% even though they left it charging all night, and because it's easier to lie to people than teach them stuff, they lie.
  - chopin 4y ago
    Or you just market your 1000 mAh battery as 950 mAh battery. But, uhhmm, honesty and marketing... If you can't charge the battery to 1000 mAh, then state so.
    - mavhc 4y ago
      You can charge it to that, but you don't want to keep it there, will cause the battery to age faster
    - fomine3 4y ago
      Note that Apple doesn't specify battery capacity spec on iPhone.
- Tade0 4y ago

deleted 4y ago

[deleted]

8n4vidtmkvmk 4y ago

could also say it charges to tesla 3 capacity in under 5 minutes