February 23, 2026
Glazed hype, salted comments
VTT Test Donut Lab Battery Reaches 80% Charge in Under 10 Minutes [pdf]
80% in 10 minutes — hype, side‑eye, and “show us the specs” vibes
TLDR: A Finnish lab tested Donut Lab’s cell charging to 80% in under 10 minutes, sparking excitement and skepticism. The community cheers the speed but fixates on missing basics (size, weight) and that it’s only “identified as solid‑state,” turning the thread into hype vs. proof — and EV FOMO is real
Donut Lab says its new battery hit 80% charge in under 10 minutes, and a Finnish government‑affiliated lab (VTT) ran the tests. Cue the internet shouting match. One camp is vibing on the speed — and the idea that range anxiety could be toast. Another camp is clutching pearls over a spicy line at the end: “which the customer identified as solid‑state battery cells.” Translation: VTT tested what Donut Lab sent, but didn’t certify it’s truly “solid‑state,” and the crowd noticed.
The play‑by‑play: VTT measured a 26Ah cell (about 94Wh) charging at 130 amps to 80% in ~9.5 minutes and to full in ~13.5, with tests also at 286 amps and different heat sinks for cooling. Commenters want basic info like size and weight before declaring victory, with one user summarizing the specs while another linked the YouTube announcement to check the lab’s credibility. Skeptics highlight that “identified as solid‑state” wording like a big flashing marketing‑maybe sign.
Meanwhile, EV shoppers are having a crisis: buy now or wait for the donut‑powered future? One commenter says they’ll only buy used to dodge being “obsolete.” The memes? Plenty of donut jokes about “glazed specs” and “sprinkles of salt.” Hype vs. receipts — and everyone’s refreshing for dimensions, weight, and a second lab test
Key Points
- •VTT independently tested a customer‑supplied battery cell identified by the customer as solid‑state.
- •Initial capacity testing determined a nominal capacity of 26 Ah within the recommended voltage range.
- •Fast charging was evaluated at 5C (130 A) and 11C (286 A) using CC‑CV to a maximum voltage of 4.3 V.
- •Thermal management was simulated with one‑sided and two‑sided heat sinks during tests.
- •Each charge was preceded and followed by a 1C discharge to 2.7 V to measure capacity and maintain consistent conditions.