BTI RBC55-SLA55-BTI 4-cell 12V 18A Sealed Lead Acid Battery for APC SMT2200, SMT2200I-AR, SMT2200IC, SMT3000, SMT3000C, SMT3000IC, SMT3000TW, SUA2200I, SUA2200ICH, SUA2200TW, SUA2200UXI, SUA2200XL, SUA2200XLI, SUA3000-BR, SUA3000I, SUA3000I-IN, SUA3000UXI, SUA3000XLI, SUA5000R5TXFMR