4 ms·

To an 80% charge, all modern cars with super fast charging (Tesla Model 3/Y, Ioniq 5, etc) can do it in around 15-20 minutes assuming you're connected to the fa

To an 80% charge, all modern cars with super fast charging (Tesla Model 3/Y, Ioniq 5, etc) can do it in around 15-20 minutes assuming you're connected to the fastest charger available. The double time to full (vs. just to 80%) is pretty comparable to other batteries though, where that remaining 20% takes almost as long as the first 80%. So, it's a lot faster. That said, I'd be interested in lifespan. They claim 'high cycle life' but don't actually put any figures around that. The article states that the capacity figure is just a 'goal', not something they've actually achieved... if I'm reading it right, so it's a bit meaningless at the moment.

annoyingnoob 4y ago
"Enovix, based in Fremont, California, announced that it demonstrated in electric vehicle (EV) battery cells the ability to charge from 0% to 80% state-of-charge in as little as 5.2 minutes and to achieve a greater than 98% charge capacity in under 10 minutes. The cells also surpassed 1,000 cycles while retaining 93% of their capacity." They claim is went past 1000 cycles with 93% capacity remaining.
- b112 4y ago
  You'd need 4x the power to charge 4x as fast though.
bigiain 4y ago
> That said, I'd be interested in lifespan. Yep. I used to fly electric rc planes back when NiCads were the best battery available. Most of the cells we used were rated for a 0.1C charge and a 14 hour recharge at that rate. If you bought the right brand and model cells, it was possible to recharge them at 10C and fully charge them from total empty in just over 8 minutes. (Usually about 7 minutes with the low voltage cutoff in the speed controllers I used.) You'd get noticeable degradation in a pack after 50 or so cycles, and some would become unusable at 100 cycles. (Which was a decent tradeoff, since a catastrophic battery destroying crash was reasonably likely to occur well within 100 flights, at least with the sort of plane and flying me and my friends engaged in...) For a while I was flying 7 cell Sanyo AR 500mAhr packs and since I owned 3 of them I'd charge them at about 14C (7A, the highest my charger would go) which would let me relaunch every 5 mins (I'd get maybe 3.5mins of mostly full power flying time from a pack, so I'd basically fly until I got bored of landing/swapping-batteries/relaunching, or I'd crashed and broken it again.) Kids these days with their LiPo packs and brushless motors don't know how good they have it <shakes fist at cloud>

annoyingnoob 4y ago

"Enovix, based in Fremont, California, announced that it demonstrated in electric vehicle (EV) battery cells the ability to charge from 0% to 80% state-of-charge in as little as 5.2 minutes and to achieve a greater than 98% charge capacity in under 10 minutes. The cells also surpassed 1,000 cycles while retaining 93% of their capacity." They claim is went past 1000 cycles with 93% capacity remaining.

b112 4y ago
You'd need 4x the power to charge 4x as fast though.

bigiain 4y ago

> That said, I'd be interested in lifespan. Yep. I used to fly electric rc planes back when NiCads were the best battery available. Most of the cells we used were rated for a 0.1C charge and a 14 hour recharge at that rate. If you bought the right brand and model cells, it was possible to recharge them at 10C and fully charge them from total empty in just over 8 minutes. (Usually about 7 minutes with the low voltage cutoff in the speed controllers I used.) You'd get noticeable degradation in a pack after 50 or so cycles, and some would become unusable at 100 cycles. (Which was a decent tradeoff, since a catastrophic battery destroying crash was reasonably likely to occur well within 100 flights, at least with the sort of plane and flying me and my friends engaged in...) For a while I was flying 7 cell Sanyo AR 500mAhr packs and since I owned 3 of them I'd charge them at about 14C (7A, the highest my charger would go) which would let me relaunch every 5 mins (I'd get maybe 3.5mins of mostly full power flying time from a pack, so I'd basically fly until I got bored of landing/swapping-batteries/relaunching, or I'd crashed and broken it again.) Kids these days with their LiPo packs and brushless motors don't know how good they have it <shakes fist at cloud>