These are replacement batteries for RBC6, LW-6FM12S, LHR12-12, HR1251W, GPS12-12F2 and BP12-12. We supply only brand new, factory fresh, high quality batteries. We guarantee the best price and 100% compatibility with your APC RBC6 model. You must use the existing cables and hardware to connect your replacement ups batteries. The replacement sla batteries also include a minimum of one year warranty.