Essential for sealed battery boxes to prevent internal pressure build-up and potential rupture. Reliable burst pressure range between 20–40 kPa for dependable release when critical. Lithium-ion batteries used in electric vehicles such as electric vehicles (BEV) and hybrid vehicles (HEV), which have been rapidly expanding in the marketplace recently, generate a large amount of gas in case of thermal runaway, which leads to the pressure increase inside the battery pack and a. Building advanced lithium ion batteries for the automotive world, along with the marine, RV, and other industries, Lithionics Battery uses Smart Products' Series 300s as pressure relief valves for high-safety installations. During normal operation, it prevents water and foreign material from entering the battery, protecting the battery modules from short-circuit. To ensure that PRVs function correctly and meet performance expectations, laboratory testing according to ISO 23123 is essential. This. The Battery Pack Unidirectional Pressure Relief Valve from PUW is a specialized solution designed to enhance safety in new energy vehicle battery packs. This valve is crafted from high-strength aluminum with an anti-oxidation coating, ensuring excellent durability and corrosion resistance.