This is a brand new replacement battery Xiaomi BP4P for Xiaomi Civi 3. All Xiaomi BP4P are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test! Each Xiaomi BP4P 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 Xiaomi BP4P batteries!