This is a brand new replacement battery Vargo VX4 for Vargo VX4. All Vargo VX4 are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test! Each Vargo VX4 Battery has passed a series of safety certifications, such as CE, UL, ROHS, ISO9001/9002. In order to protect your device and your safety, please rest assured to purchase our high-quality Vargo VX4 batteries!