[xienze]

Fairly important bit here at the end:

> This project included independent charging performance tests on the energy storage devices supplied by the customer, which the customer identified as solid-state battery cells.

> which the customer identified as solid-state battery cells.

[bizzleDawg]

It's almost like there an implied "wait for part 7 guys and remember to like and subscribe"

[make_it_sure]

why?

[xienze]

Because that's not independent verification that the device tested actually _is_ a solid state battery. Just that whatever was tested had certain charging characteristics.

[taneq]

Tbh the exciting part isn’t so much the composition but whether it can actually meet the claimed performance. It could be made of wet gym socks for all I care if it can do 100k charge cycles at 90degC with comparable energy density and specific power to LiFePO.

[xienze]

But that’s the point I’m making. You’re taking the claims that Donut Labs is making about it being a new type of battery at face value. Having someone verify charging characteristics isn’t that helpful without simultaneously verifying that the battery actually is what they’re claiming.

[audunw]

How is he taking it at face value? He’s saying it doesn’t matter. Which it really doesn’t.

The reason solid state is exciting is the promised high energy density, and in some cases better safety. We shouldn’t care if it’s really “solid state” or not. That’s just marketing fluff. It doesn’t even really have a good definition as some chemistries are somewhere in between (sometimes described as semi-solid state).

This test confirms the charging speed and basically confirms the energy density (estimates people have done based on the video/report put it in the ballpark of what’s claimed)

You and I should really not demand a test that it’s actually solid state. That just doesn’t matter. We need energy density tests, cycle life tests, puncture tests, etc. If all those specifications are confirmed, whether it’s solid state or not becomes completely moot.

And in the end what truly matters is if it can be mass manufactured at low cost, which can’t be tested anyway. All these social media demands for tests are kind of ridiculous, since the only thing publishing the tests does is give Donut more PR. They’re basically laughing all the way to the bank considering how easy it has been to manipulate YouTube, Reddit and HackerNews into giving them free press. We will have another round in a week when the next test is published. I’m honestly impressed.

Personally I reserve all judgement until the promised bikes are on the road and torn down by third parties.