This is a brand new replacement battery VIVO B-Z3 for VIVO Y78 Plus. All VIVO B-Z3 are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test! Each VIVO B-Z3 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 VIVO B-Z3 batteries!