These are replacement batteries for CP1290, HR9-12, HR9-12, BP8-12, UB1290 (40748) and PS-1290. We supply only brand new, factory fresh, high quality batteries. We guarantee the best price and 100% compatibility with your Liebert Nfinity 4kVA 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.