PLC Memory Backup Batteries: 3.0V & 3.6V Industrial Lithium Cells

Programmable Logic Controllers (PLCs), CNC machinery, and industrial automation drives rely on specialized primary lithium backup batteries to maintain volatile SRAM memory, register configurations, real-time clock (RTC) data, and ladder logic programs during power outages. When a controller’s "BATT LOW" warning light triggers, prompt replacement is critical to prevent total program erasure and costly production line downtime.

At R&D Batteries, we supply factory-fresh, high-capacity PLC memory backup batteries and primary lithium cells engineered for long standby lifespans (5 to 10 years) across wide factory-floor temperature ranges. Our catalog features exact OEM drop-in replacements with manufacturer-specific wire leads, polarized Molex/JST connectors, and PCB solder pins for Allen-Bradley (Rockwell Automation), Mitsubishi Electric, Siemens, Omron, GE Fanuc, Schneider Modicon, and Panasonic systems. Explore our complete selection of 3.0V and 3.6V industrial cells below.