SAMSUNG S21 FE USED ORIGINAL BATTERY {4370} MAH {16.95} WH ASSEMBLED IN VIETNAM, ASSEMBLE AU VIETNAM. SECONDARY LI-ION BATTERY. ITM SEMICONDUCTOR VIETNAM CO., LTD BATTERY MODEL NO. EB-BG990ABY L, WARNING: DO NOT DISASSEMBLE, CRUSH, PUNCTURE, HEAT, BURN OR REUSE. AUTHORIZED SERVICE PROVIDER ONLY.