QuantumScape has released independent test data showing its multi-layer solid-state lithium-metal cell completed 800 full charge-discharge cycles with zero measurable capacity degradation—a result that exceeds the performance of commercial lithium-ion cells at equivalent conditions. The 24-layer cell delivered 390 Wh/kg energy density while maintaining sub-15-minute fast charge capability throughout the test programme.
Commercial Implications
The cycling data addresses the primary concern of automotive OEMs: whether solid-state cells can deliver the 8-10 year warranty periods required for passenger vehicles. QuantumScape’s partnership with Volkswagen targets a pilot production line in 2027 with initial deployment in the Audi premium platform.
“800 cycles with zero degradation isn’t just good—it’s better than anything available commercially today. This data changes the conversation from whether solid-state works to when it ships.”—Dr. Jagdeep Singh, CEO, QuantumScape
