SAMSUNG S21 ULTR USED ORIGINAL BATTERY {4855} MAH {18.84} WH CELL MADE IN CHINA, ASSEMBLED IN CHINA MANUFACTURE: NINGDE AMPEREX TECHNOLOGY LIMITED SECONDARY LI-ION BATTERY BATTERY MODEL NO. EB-BG998ABY, WARNING: DO NOT DISASSEMBLE, CRUSH, PUNCTURE, HEAT, BURN OR REUSE. AUTHORIZED SERVICE PROVIDER ONLY