The Donut Lab solid-state battery saga has been a lively run. And now, right on cue, a whistleblower steps into the spotlight. Just like that, the plot thickens.

Donut’s latest video is framed as a deep dive, and this time the focus shifts onto the battery as it sits inside the Gen 2 version of the Verge TS Pro. Rather than proving another headline claim, Donut CEO Marko Lehtimäki and CTO Ville Piippo lean into how the battery is packaged, integrated, and structured within the working motorcycle.

Donut’s latest video isn’t another test. It’s a sit-down with CEO Marko Lehtimäki, and it comes with a significantly different tone. But there are still a few signals worth paying attention to: 100,000 cycles is under scrutiny, and before we’ve seen a full production-ready version of the current battery, Donut is already talking about version 2.

The latest instalment in the Donut saga is here, and this one builds on the VTT programme we’ve been tracking from the start. Up to now, the focus has been on charging speed, thermal behaviour and real-world pack performance. This latest test shifts the spotlight onto safety, specifically, how the cell behaves after it’s already been damaged.

Donut’s stepped out of the lab. After a run of cell-level tests with VTT, the latest video finally shows what everyone’s been waiting for, the battery in an actual bike. A Verge TS Pro test mule, plugged into a public fast charger, running Donut’s solid-state pack in the real world. No lab coats this time. Just a bike, a cable, and a stopwatch.

Donut has dropped the third video in its “I Donut Believe” validation series, and this time we've moved on from charging speed or temperature tolerance. It’s now self-discharge under the microscope.

Donut has dropped the next instalment in its battery independent validation series, this time focusing on high-temperature performance, another pressure point for electric motorcycles pushed hard in real-world conditions.

Donut has released the first independent test results video from its solid-state validation program — and they’ve gone straight for one of the biggest pressure points in electric motorcycles: rapid charging.

Since their announcement of the Donut Battery, Donut Lab has taken a proper kicking. Scroll their socials — or ours — and you’ll see it: seasoned riders, early adopters, engineers, even OEM suits openly questioning whether this so-called solid-state breakthrough is the real deal or just another PowerPoint prototype. Today (20/02/26), Donut fired back.