This is a brand new replacement battery Huami PL512524G for Huami Amazfit T-Rex. All Huami PL512524G are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test! Each Huami PL512524G 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 Huami PL512524G batteries!