n3m37hDonut Labs released VTT's independant test results!
This result matches largely with the startups claims. Given what they tested, cycle times and aging are largely unknown and thermal management requirements are quite high for fast charging, this results in problems with packing, aging and charge losses. Its a nice first step, but there is a ways to go until market readiness IMHO.
I’m something of an electrical engineer but not a battery expert by any means.
If it’s truly a solid-state battery, thermal management is less of an issue since they won’t be limited to the usual -10 - 60 °C range which makes it easier to dissipate heat into the environment.
What makes me suspicious is that they claimed that the battery can operate at/above 100 °C safely without degradation, but in the 11C charging test they paused it because the temperature had reached 90 °C.