News Release June 29, 2026 H.K.S. Co., Ltd. KD e Solutions Co., Ltd. Denchi Co., Ltd. H.K.S. Co., Ltd. (Headquarters: Fujinomiya City, Shizuoka Prefecture; President and CEO: Daisuke Mizuguchi; hereinafter "H.K.S.") will provide dedicated devices for the demonstration test of KD e Solutions Co., Ltd. (hereinafter "KDES")'s EV battery life prediction diagnostic technology. By combining "actual EV battery data" obtained through Denchi Co., Ltd. (hereinafter "Denchi")'s proprietary "Electrochemical Impedance Spectroscopy"※1 with "vehicle data" collected via H.K.S.'s dedicated device, this new approach enables highly accurate prediction of EV battery lifespan. This advancement will visualize battery value, clarifying optimal timing for vehicle replacement and secondary battery use※2, thereby accelerating the circular economy※3 from battery production to disposal. ※1 A method that sends a continuously frequency-variable weak signal directly into the EV battery via the charging port and analyzes the response to predict degradation. ※2 Initiatives to repurpose lithium-ion batteries after their automotive use by utilizing their remaining performance for alternative applications. ※3 An economic system that continuously generates added value in a sustainable manner by circulating resources and minimizing waste. [Features] ■ EV battery life prediction completed in just 5 minutes! Instant diagnosis results via smartphone-connected new system ■ Visualization of differences between predicted battery lifespan under usage conditions and standard lifespan ■ Diagnostic results analyzed in detail using two data streams: actual battery measurements and vehicle data ■ Results presented with easy-to-understand graphs and clear commentary (see diagram below) ■ Additional diagnostic function for predicting EV battery fire risk planned (demonstration test to begin autumn 2026 or later) ■ Demonstration test period: July 2026 – March 2027 ・Battery life prediction diagnosis to begin at KDES-ow