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ManualsBrandsAPC ManualsAutomotiveAPC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

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Battery Cartridge Replacement 3

Back-UPS ES350/ES500

Back-UPS ES 350/450/550/650/725/750 (120 V)

Back-UPS ES 400/550/700 (230 V)

Disconnect wires, replace with new

battery and reconnect wires.