The Panasonic AFPX-BATT is a high-quality backup battery designed specifically for the FP-X series controllers. This 24.5mm lithium 3V coin battery ensures reliable power backup, safeguarding critical data and maintaining the real-time clock during power outages. Ideal for industrial automation applications, the AFPX-BATT is a non-rechargeable primary battery that meets RoHS compliance standards, making it a dependable choice for maintaining uninterrupted operations in your automation systems.