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VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
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Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#72To clarify some misconceptions regarding what they do and don't have in their current motorcycles, as of Feb 2026:
All of current existing Verge motorcycles have a "traditional" lithium ion ~20kWh battery pack[0], very much on par with competition in all specs. They do exist and a few indeed appear to be in owners' hands (according to Facebook Verge fangroup posts and pics), and they can be test ridden. One of their showrooms is in Valley Fair in San Jose, CA. I have tested one of them. It feels and seems to perform well, as advertized and as physics allow, despite the hubless engine and skepticism around that. However, the test ride was ~30 minutes and there's so few of those bikes out there, that there's virtually no data on longevity.
What currently does not exist is a Verge motorcycle with the battery that they claim to be testing here. They have announced that all their offerings will feature their solid state battery later this year, increasing the energy capacity to ~30kWh. That remains to be seen.
[0] https://web.archive.org/web/20260223173926/https://www.verge...
Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#73Here's the CEO Marko Lehtimäki selling his magic AGI: https://www.youtube.com/watch?v=ilgJKjiDLV8 :D He's been a busy beaver!
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Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#74Let me clear some things up as I have experience with places like VTT (but not VTT specifically) in my career. VTT is a company that you pay to run tests for you. You bring them a product, tell them what tests you need done, and then they do them with honesty and expensive well calibrated gear. Frequently you also send engineers along with your product to provide on the spot support for the testing. It's very likely…
> It's incredibly suspect that in a battery capacity test ...
They would probably say this is because it's not a "battery capacity test" but a "charge performance test"
But I agree, when they eventually do have VTT perform a capacity test, how can we be sure that it's the same cell from the charge performance test?
Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#75Apart from metrics like energy density and cycle life, shouldn't we also consider idle self-discharge rate or charged-state longevity when evaluating batteries? No one seems to be talking about that in this case.
Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#76Earlier quoted context omitted.
It's disappointing that this merry band of serial scammers are tarnishing Finland's reputation.
Can you plase give more information about the scams(not opinions about scam but actual scams where he was exposed) this guy committed?
Who has the burden of proof here?
This is absolutely a scam.
Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#77Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#78Let me clear some things up as I have experience with places like VTT (but not VTT specifically) in my career. VTT is a company that you pay to run tests for you. You bring them a product, tell them what tests you need done, and then they do them with honesty and expensive well calibrated gear. Frequently you also send engineers along with your product to provide on the spot support for the testing. It's very likely…
> It's incredibly suspect that in a battery capacity test ... They would probably say this is because it's not a "battery capacity test" but a "charge performance test" But I agree, when they eventually do have VTT perform a capacity test, how can we be sure that it's the same cell from the charge performance test?
> how can we be sure that it's the same cell from the charge performance test?
I would imagine they will run the same tests again. Light testing for specific things during development or scaling, increased testing as you feel more confident in the product.
Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#79Apparently the first 3rd party test was on fast charging and the 3rd party is VTT, which is the government affiliated(owned?) "VTT Technical Research Centre of Finland" The people listed on this report appear to be on LinkedIn, so I guess it will be easy to confirm if the test document is authentic. The announcement of the test: https://youtu.be/d2QU_LpkSPs Hopefully, soon we will find out if this seemingly "too good…
Careful though, this test explicitly only tests the charge and discharge capabilities of the battery, not whether it's a solid state battery or not. According to ChatGPT, these results would in theory also be possible with a normal Li-ion battery. I am really hoping this is real though! And waiting for further tests.
FPV lipo batteries can charge at 5c all day, you might be able to get away with 11c for a few charges before degradation or becoming spicy. Agree that this proves nothing useful.
Re: VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
#80First report for Donut lab battery is out. Here is the TLDR Specs 26 Ah nominal capacity at 1C discharge rate 94 Wh nominal energy with 3.6V nominal voltage Operates within 2.7V – 4.15V recommended range (max charging to 4.3V) What was verified 5C charging (130A): 0-80% in ~9.5 minutes, 0-100% in ~13.5 minutes 11C charging (286A): 0-80% in ~4.9 minutes, 0-100% in ~7.3 minutes Successfully delivered 98.4-99.6% of char…
> Energy density: No weight and volume was mentioned
Note that the report includes some photos of the battery, so we can assume that it's not, like, several orders of magnitude larger than what they advertised.
EDIT: Honestly, I'm pretty excited. Even if their promises on cost and materials don't pan out and the lifetime turns out to be terrible, what they've just demonstrated is already a game-changer.