APC UPS Battery Replacement, RBC2, for APC Back-UPS Models BE500R, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET black - Walmart.com
APC Replacement Battery Cartridge 110 UPS battery 1 x battery lead acid black for PN BE650G2 CP BE650G2 FR BE650G2 GR BE650G2 IT BE650G2 SP BE650G2 UK BR650MI - Office Depot