Cuberg Batteries – Some Real Numbers

Dean Sigler Batteries, Electric Aircraft Components, Sky Taxis, Sustainable Aviation 3 Comments

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 Wang told eVTOL.com. Independent testing by certified laboratories enables us to see verifiable numbers, highly important in designing new electric aircraft and converting existing aircraft to electric power.  Gasoline and Diesel fuels already have well-established numbers, which makes determining output …