APC Replacement Battery Cartridge #117 - UPS battery - 1 x lead acid - for P/N: SMX2000RMLV2UNC-TU, SMX3000RMHV2U D, SMX3000RMLV2U-RBC, (APCRBC117) at TigerDirect.com
American Power Conversion (APC) - RBC2 - Battery, Lead-Acid, 1.90 in. (Max.) H x 4.00 in. (Max.) W x 5.50 in. (Max.) D - Allied Electronics & Automation