GP 12120 is a general purpose battery with 3-5 years in standby service or more than 260 cycles at 100% discharge in cycle service. As with all CSB batteries, all are rechargeable, highly efficient, leak proof and maintenance free. Replaces batteries for APC models: APC BACKUPS 650M, APC BACKUPS 650MC, APC BACKUPS 650PRO, APC BACKUPS PRO650, APC BACKUPS PRO650PNP, APC BACKUPS PRO650S, APC SMARTUPS 620NET, APC SMARTUPS 650, APC SMARTUPS VS650 12 Volt 12 A.H. Length: 5.94 Width: 3.85 Height :3.70 Wt: 8.86 lbs. Ref: RBC4 Reference: UB12120, PS-12120, GP12120, LC-RA1212P, NP12-12