They are testing a 26Ah battery pouch and were able to charge it at a 11C rate for 3 min and it retained 98.4% charge!!
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.
I think the “it retains 98% charge” quote might be misleading. Thats true for the capacity (in Ah), but not for the energy (in Wh). The report shows this clearly in the tables:
Efficiency is about 83% if my math is right (which is still good).
Please don’t make the post link go straight to a file.
Weirds me out when I think I’m going to a website and suddenly it’s asking where I want to download to.
Man if this is actually real it wi be crazy. I’m waiting for some crazy limitation to be discovered.
Next week they are releasing more testing This is from a legitimate testing company in Poland
The report is from an independant institute from Finland, not Poland:
VTT Technical Research Centre of Finland Ltd
