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Play on Finnish secret technology dominance (Solid State Batteries)

J
Jan 9, 2026 · 15:24

This is my first DD so bear with me:

**TL;DR
CNT Nanotubes in batteries/super capacitor will revolutionize batteries.
Finnish deep tech industry is about to boom!
BUY $CANATU**

It all started with this weird company called Donut Labs, that announced a Solid State battery that basically has no apparent downsides here:
https://www.youtube.com/watch?v=Y-aPS2AwMbc

a**nd they will deliver motorcycles with it in Q1 this year!**
https://www.youtube.com/watch?v=cy_mXYItqXU

**HUGE NEWS right? The battery that was promised?**

| Device | Wh/kg | Cycles |
| --------------- | ----- | ------ |
| Li-ion | ~300 | 1k |
| Super capacitor | ~5–10 | 100k+ |
| Donut (claimed) | 400 | 100k |

I mean it sound like utopia and the CEO is kind of a slime-ball from his past but the company is solid?
But how can they just be better at everything? It's hard to be a scam because they are private and promising things 3 months in the future...
The thing is I want to bet on it and looked for ways to invest so down the rabbit whole it goes...
Why don't they have patents and stuff? Maybe they think it's something they cannot patent?

**How can you bet on it?**

It's all private companies so let's see....

Donut did partner up with Nordic nano - a specialist for nano printing also in Finland! That makes claims of a battery from a company that is 2 years old a bit more believable.
But there are so many big players in battery, how could they achieve this?

After watching the analysis from this guy it all made more sense:
https://www.youtube.com/watch?v=Qsi-TS8PX7U

**TL;DW: They didn't just improved batteries on every single part, they significantly improved the energy density of a super capacitor and are calling it a battery!
Basically they are calling a super capacitor a solid-state-battery!**

*Risks: Super capacitors are not known to keep energy for too long - there have been no claims of the batteries actually holding energy for long.
Best case: ~5–10% per day energy losses here.*

Super capacitors match a lot more with their claims and only the energy density is far out of normal super capacitors.
But what materials are they using? Lithium? Cobalt? Graphene? It all doesn't match the claims.

This is where the Finnish deep tech is coming into play:
There are actually already papers about super capacitors that have a lot of energy density, one prominent one from last year is this:
https://www.sciencedirect.com/science/article/pii/S1359836825000691

**They also claim "100,000 charge/discharge cycles" like the Donut people, "while retaining nearly 100 % of its initial capacitance" same as in the marketing material! Also the 400 Wh/kg is mentioned in the paper!**
What if they just cite the paper? What if that is why they don't patent it?

Basically it's using Carbon Nanotubes that are also used by ASML and other big players in semiconductor pipelines to construct a Battery-like supercapacitor!

The chemistry of the Donut battery is secret, but they claim it's made from abundant materials and is not geopolitically endangered.
Carbon Nanotubes fit perfectly here - **they are using methane to make those!**

Researching manufactoring for those materials lead me to actually to another finnish player:

**Canatu Oyj $CANATU https://canatu.com**

Also finally something I can throw money at! 300M€ market cap is honestly tiny.
They have patents, for production and is a solid business so worst case you buy stock of a solid business.
Even if Donut is exaggerating, CNT adoption across energy storage, semis, and displays continues.

They also have enough manufacturing for the claims of Donut and license their equipment for on-site production.
Is it coincidence that there are so many Finnish players now emerging? Is the world ready for Finnish dominance?

Are all 4 Finish companies actually working together to deliver a technological boom?

Thanks for listening to my TED talk.

Position: 111 $CANATU stock

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