Cuberg Batteries – Some Real Numbers

Dean Sigler Batteries, Electric Aircraft Components, Sky Taxis, Sustainable Aviation Leave a Comment

Cuberg, a startup battery company based in Emeryville, California, is pretty specific about its cell-level battery performance – 369 Watt-hours per kilogram at a discharge rate of C/20.  This was verified in testing at the Idaho National Laboratory, with Cuberg cells demonstrating a specific power of 2,000 Watts per kilogram.   Cells lasted through “around” 370 cycles with C/2 charging before they dropped to the ability to maintain 80-percent capacity.  See a .pdf of the test results here. Verifiable Numbers INL tested around 20 of Cuberg’s battery cells, covering multiple cell variants across a spectrum of performance tests. “While the testing all looked good, our announcement addresses the specific metrics that are of most impact to our industry,” Cuberg CEO Richard …

Battery Startup Cuberg Receives Funding from Boeing

Dean Sigler Batteries, Sustainable Aviation Leave a Comment

Cuberg, a battery startup “Founded based on graduate research work in the materials science department at Stanford,” includes individuals who worked with Yi Cui at the school.  They promote their safe electrolyte as a key element in their new battery.  “Our highly stable proprietary electrolyte enables the use of high-voltage cathodes and lithium metal anodes in a safe and reliable format.” Their video shows the relative safety of that premise.  It starts, though, with a quick review of their manufacturing techniques, which are similar to standard methods used in most batteries. The team, headed by Richard Wang, “Entrepreneur and Battery Scientist,” includes co-founder Mauro Pasta, an Associate Professor at Oxford University.  His Linked In profile includes this note: “Cuberg is …