03/09/2026
Donut Lab said its battery could deliver 400 Wh/kg.
That's a huge claim. And it's one critics have been asking to see independently tested since day one.
Now it has been.
VTT Technical Research Centre of Finland weighed the cell, measured it, charged it and discharged it. The result?
409.3 Wh/kg.
That's slightly higher than Donut's original claim.
So, has one of the biggest questions surrounding the Donut Battery finally been answered? And what questions still remain?
We've broken down Episode 15 of I Donut Believe on BCB. No hype. No fanboy nonsense. Just what the independent test tells us, and what it doesn't.
Read it here: https://wix.to/AhUvl7g