The article discusses the critical safety concern of thermal runaway in lithium-ion batteries in electric vehicles (EVs) and the importance of implementing a proactive monitoring solution to provide early warnings for potential thermal runaway incidents. UN GTR 20 and GB 38031:2020 mandate the provision of 5-minute early warning signals to allow passengers to evacuate from dangerous EVs in case of thermal runaway. Gas detection technology is highlighted as an effective method to comply with this regulatory requirement by monitoring hazardous gases like carbon dioxide, carbon monoxide, and hydrogen gas released during thermal runaway events. Cubic, a manufacturer specializing in gas sensors and analyzers, has developed advanced gas sensor solutions, including the ATRS-1016 and ATRS-1012, tailored for detecting hydrogen and other gases in Li-battery thermal runaway scenarios. Cubic's ATRS-1016 sensor, based on MEMS thermal conductivity technology, focuses on hydrogen gas detection, offering fast response times and high accuracy. On the other hand, the ATRS-1012 sensor is designed for monitoring CO2 and H2 emissions from lithium-ion batteries, providing early warnings to the Battery Management System for safety strategies. These sensors combine non-dispersive infrared (NDIR) and thermal conductivity (TC) technology, ensuring accurate measurements and low power consumption. The article emphasizes that Cubic's gas sensors play a crucial role in preemptively addressing safety risks associated with Li-battery thermal runaway incidents in EVs. The sensors are praised for their reliability, rapid response, and contribution to automotive safety. Cubic's commitment to research and development aims to enhance the accuracy, efficiency, and reliability of their gas sensors to meet the evolving needs of the automotive industry, ultimately fostering safer driving environments and empowering the sector.