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Factorial Energy testing results for 40Ah solid-state battery: 97.3% capacity retention after 675 cycles

In April, Factorial Energy, a start-up solid-state battery technology company, emerged from stealth mode with a 40Ah solid-state battery cell for electric vehicles (EVs) and other applications. (Earlier post.)

Now, Factorial Energy announced that the company’s initial round of testing of the 40 Ah cell cycle behavior at 25 ˚C demonstrated a 97.3% capacity retention rate after 675 cycles.


Solid-state batteries have struggled in the past to scale-up cell capacity. Factorial’s successful cell performance results indicate that the company has overcome this challenge and is leading the field in solid-state battery electric vehicle (EV) application. The testing marks a major performance milestone for Factorial’s technology as the company heads to market and continues discussions with several automakers on supporting the research and manufacturing of EV battery cells.

Factorial’s Factorial Electrolyte System Technology (FEST) is a proprietary solid electrolyte material that enables safe and reliable cell performance with high-voltage and high-energy density electrodes. Unlike any others on the market, Factorial’s drop-in battery technology also can be easily integrated into the existing lithium-ion battery manufacturing infrastructure, the company said.

Former Chairman and CEO of Panasonic Corporation of North America Joe Taylor serves as Factorial’s executive chairman. Dieter Zetsche, the former chairman of the Board of Management of Daimler AG and Head of Mercedes-Benz; Mark Fields, former Ford Motor Company CEO; and Harry Wilson, former senior advisor to the Obama Administration’s Presidential Task Force on the Auto Industry, serve on Factorial’s advisory board.



Datos vacios carentes de cualquier sentido....... No se dan datos de como se han logrado esos 675 ciclos. A que tasas de carga y descarga se han logrado?. Algo me dice que cuando no han dado esas cifras es que son ridículamente bajas.......Ya dieron otros datos en Abril de este 2021 con 400 ciclos al 80% después de ciclarlas a 0,5C/0, 5C. Enevate por ejemplo son 340wh/kg-800wh/l y 1000 ciclos al 80% a 1C/1C.


¡Oye idiota! Este es un blog de idioma inglés.

Chinga su madre.


El Castellano es la segunda lengua más hablada del planeta con cerca de 600.000.000 millones de personas que la hablan, te guste o no vete acostumbrando que es lo que hay. Por cierto escribo en Castellano por que me da la real gana. Mejor Chinga a tú madre sinvergüenza que seguro que tiene un culo gordo y horrendo.


@ Centurion

If I could make a polite suggestion. Write your comment in Spanish if that is easier but also include a Google Spanish to English translation as more of the people reading it will be able to understand English.

Google Translate version of your first post:

Empty data devoid of any meaning ....... No data is given on how these 675 cycles have been achieved. At what loading and unloading rates have they been achieved? Something tells me that when they have not given those figures is that they are ridiculously low ....... They already gave other data in April of this 2021 with 400 cycles at 80% after cycling them at 0.5C / 0.5C. Enevate for example are 340wh / kg-800wh / l and 1000 cycles at 80% at 1C / 1C.


Monitor the site ban those that are insulting


More like, ban the ones who are spamming.  Who do you think does that around here, anyway?

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