Stealth founder sits down for first major interview: 'We don't need to brag about what we're working on'
13 Mar 2026
06:09
Tempur mattresses, ski goggles, and underwear endorsed by rapper 50 Cent – Mathias Ingvarsson doesn't exactly have the typical CV of an energy tech CEO.
In his first major interview, Ingvarsson, boss at the under-the-radar startup Holyvolt, discusses with Impact Loop:
→ How the battery "printing" tech actually works
→ Why knowing nothing about the industry turned out to be an advantage
→ And whether there's any truth to the rumours swirling online
In his first major interview, Ingvarsson, boss at the under-the-radar startup Holyvolt, discusses with Impact Loop:
→ How the battery "printing" tech actually works
→ Why knowing nothing about the industry turned out to be an advantage
→ And whether there's any truth to the rumours swirling online