For Lithium-ion batteries in an electric vehicle, ensuring high safety against dangerous events such as smoke and fire are required.Nuvoton automotive qualified battery monitoring ICs include a redundant measurement system in which the elements and functional blocks are electrically separated by utilizing the characteristics of in-house development SOI process and achieve high security and reliability with a highly redundant communication topology. This makes it easier for customers to design and develop an automotive battery system compliant with ISO26262 ASIL-D. High precision voltage measurement help to extend the cruising range of BEVs and the guaranteed voltage measurement error in wide input voltage ranges and wide temperatures enable to provide a common platform for various vehicle models and applications.