China's tech giant claims 1,800-mile range for new solid-state EV battery

Huawei has filed a patent for a sulfide-based solid-state battery that uses nitrogen-doped sulfide electrolytes to reduce side reactions at the lithium interface, potentially enabling energy densities between 180 and 225 Wh/lb—two to three times higher than current EV batteries. The company claims this technology could deliver an unprecedented electric vehicle range of about 1,864 miles and enable charging from 10% to 80% in under five minutes. However, these performance figures remain theoretical, with practical implementation dependent on yet-to-be-developed charging infrastructure. Huawei, though not a vehicle manufacturer, collaborates closely with automakers to integrate advanced technologies and is increasingly investing in upstream battery components, including manufacturing sulfide electrolytes, a costly but highly conductive material. China is asserting dominance in the EV battery sector, with solid-state battery technology advancing quietly alongside high-profile developments like megawatt charging. Domestic firms such as CATL plan to pilot hybrid solid-state batteries by 2027, though analysts caution that