This battery is designed to replace similar batteries in Allen Bradley 1756-L1, 1756-L1M1, 1756-L1M2, 1756-L1M3, ControlLogix Logix 5550, Logix 5555, Logix 5563 series programmable logic controllers and industrial computers. The ControlLogix system provides discrete, drives, motion, process and safety control together with communication and state-of-the-art I/O in a small, cost-competitive package. The system is modular, so you can design, build and modify it efficiently with significant savings in training and engineering.