This paper will compare, at a high level, the safety considerations for lithium ion batteries and vanadium redox flow batteries and how the systems function and behave; it will also review the relevant standards for these technologies. Two leading technologies, Lithium-ion Batteries (LiBs) and Vanadium Redox Flow Batteries (VRFBs), are at the forefront of this transition. What is vanadium redox flow battery? Vanadium redox flow battery is one of the best rechargeable batteries that uses the different chemical potential energy of vanadium ions in different oxidation. Lithium-ion or “ li-ion ” batteries are the batteries you're probably most familiar with. They're used in most laptops, smartphones, and EVs – and for good reason! Over the last few decades, billions of dollars have been poured into li-ion R&D, and the resulting batteries are energy dense, almost. As we delve into the energy storage domain, the comparison between vanadium redox flow batteries (VRFBs) and lithium-ion batteries becomes a key topic. This is crucial because the battery type significantly influences our electrical grid's balance. From ESS News A 300 MW/1,200 MWh battery energy storage system (BESS) in Ordos, Inner Mongolia, has entered commercial operation after. China brings online 300 MW/1,200 MWh grid-forming energy storage facility in Inner Mongolia, integrating lithium-ion and vanadium flow battery technologies.