The Allen-Bradley 1756-BA1 Battery Assembly is a lithium memory-backup battery designed for Series A ControlLogix controllers in the 1756-L61, L62 and L63 family. It houses a Sanyo Lithium Cylindrical SE type cell, Sanyo part number CR17335 SE, and is provided as a replaceable battery module for preserving the controller’s nonvolatile memory during power interruptions. It is specified for use with Series A controllers (1756-L61, 1756-L62, 1756-L63), with a Series B counterpart (1756-BA2) for later controllers, and the assembly weighs approximately 0.59 g.
