Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

donutlab.com

Post reply on HN
Print view View original

101–110 of 279 posts

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#101

Post by bee_rider »

MBCook wrote: post #27
cloudfudge wrote: post #13

From the donutlab page: > It can be charged to full in just five minutes without limiting charging to 80%, and supports full discharge safely, repeatedly, and reliably. From the motorcycle youtube video[1]: > delivers up to 370 miles (600 km) of range and adds up to 186 miles (300 km) in under 10 minutes One is claiming 100% in 5 minutes, and the other is claiming ~50% in 10 minutes. Why are their claims so different…

Don’t bigger batteries allow faster charging because they can absorb current faster? Perhaps the problem is the size of the battery being limited in a motorcycle.

The first quote gives it in terms of the capacity, “to full,” and for the second cloudfudge has helpfully computed that for us.

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#102

Post by [deleted] »

stonogo wrote: post #96
senordevnyc wrote: post #91

Earlier quoted context omitted.

It's fine, those folks can just get angrier and angrier as the market makes their ICE cars more and more difficult and expensive to own.

I'm still waiting for the EV that's a car instead of some kind of techbro reimagining of personal transportation with a 27" tv glued to the dash. So far the plug-in hybrid market is figuring that out first -- the Mazda CX90 is a real car. The VW ID3 gets close, but it still feels like someone tried to design a B-movie space ship. There's a great market out there willing to buy B-movie space ships, but if EVs are goin…

[deleted]

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#104

Post by john01dav »

ex-aws-dude wrote: post #103

I don’t understand, why would this debut only in a motorcycle? Wouldn’t there be a much bigger market and investor interest in putting it in a car initially?

A guess: existing charging infrastructure is too slow/low power to charge this fast enough to be useful over currently standard batteries for car sized batteries

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#105

Post by jfengel »

ninkendo wrote: post #99
cosmic_cheese wrote: post #81

Earlier quoted context omitted.

Even as things currently stand, some folks just have a bone to pick with EVs. Even if future models have an 800mi range, can charge to 100% in 5 minutes, and have useful lifetimes as long or longer than ICE counterparts, some will figure out some reason to get angry about them.

It’s range anxiety and it’s real. And it’s not entirely unjustified. Where I live in the Midwest I have literally never seen a public charging station. I know they exist because I can search for them on maps app and I see dots, but it speaks to their general small numbers that I’ve never seen one in person that I can remember. Now, prior to this, I lived in California for many years from 2011 until 2019, and I saw to…

I suspect that the causation runs the other way. They think EV owners, Californians, and anyone who doesn't smell like petroleum is crazy. Therefore they won't buy electric cars and so nobody builds charging stations.

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#106

Post by sneak »

ex-aws-dude wrote: post #103

I don’t understand, why would this debut only in a motorcycle? Wouldn’t there be a much bigger market and investor interest in putting it in a car initially?

I would assume it’s a capacity/scaling thing, plus bizdev. Car companies source things on much longer timescales and build many many more units.

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#107

Post by driverdan »

jjcm wrote: post #48

One of the things I haven't seen discussed yet in the comments is this claim: Clay-like design freedom They're claiming this not only can fit custom geometries, but can be part of the structure itself. Would love to see what they're building this out of. I expect we'll see some people dissecting the verve cycle batteries soon enough.

That's only good if they can maintain easy repairability. We don't need more expensive disposable electronics.

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#108

Post by jfengel »

nine_k wrote: post #45
slaw wrote: post #43

Earlier quoted context omitted.

1 MW chargers don't look any bigger than standard chargers. https://insideevs.com/news/761403/byd-thousands-megawatt-cha...

The thickness of the cables is often due to their water cooling. Transferring 1 MW at 99.9% efficiency means 1kW escaping as heat.

That's about the same as a hair dryer. Maybe I can save time by charging my car and setting my 'do simultaneously.

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#109

Post by markbao »

sneak wrote: post #106
ex-aws-dude wrote: post #103

I don’t understand, why would this debut only in a motorcycle? Wouldn’t there be a much bigger market and investor interest in putting it in a car initially?

I would assume it’s a capacity/scaling thing, plus bizdev. Car companies source things on much longer timescales and build many many more units.

+1. There’s also more upstart motorcycle makers than car makers willing to take a bet on new tech. Plus the difficulty of scaling manufacturing to serve much larger capacity car batteries.

Re: Donut Lab’s all-solid-state battery delivers 400 Wh/kg of energy density

#110

Post by verdverm »

ninkendo wrote: post #99
cosmic_cheese wrote: post #81

Earlier quoted context omitted.

Even as things currently stand, some folks just have a bone to pick with EVs. Even if future models have an 800mi range, can charge to 100% in 5 minutes, and have useful lifetimes as long or longer than ICE counterparts, some will figure out some reason to get angry about them.

It’s range anxiety and it’s real. And it’s not entirely unjustified. Where I live in the Midwest I have literally never seen a public charging station. I know they exist because I can search for them on maps app and I see dots, but it speaks to their general small numbers that I’ve never seen one in person that I can remember. Now, prior to this, I lived in California for many years from 2011 until 2019, and I saw to…

Most current EV owners charge at home for daily needs, you really only need charging stations for long distance and owners w/o options where they park (i.e. renters or street parking only) Even with street parking, I see lots of people running cables across the sidewalk (with safety / step covers thankfully)

I drove across the country and accounted for midwest charging. Generally the rocky mountain states are minimal, but I was not without a charger ever 30-40 minutes of travel time through the midwest. Most of them are either in Big Store parking lots or at gas stations like Casey's. You need far fewer of them than gas stations, so we should expect to see fewer of these vehicle refill stations in the future anyway

Post reply on HN