Product Overview

The Allen-Bradley 1769-BA functions as a premium Lithium Thionyl Chloride ($Li-SOCl_2$) battery assembly engineered by Rockwell Automation. It provides critical primary backup power to the volatile memory (RAM) and internal Real-Time Clock (RTC) across legacy Allen-Bradley CompactLogix and MicroLogix controller hardware. If the primary power supply drops out, an unmaintained or depleted battery cell causes the immediate erasure of the controller's active project file, configuration parameters, and variable tag tables.

The cell features a dedicated, factory-attached wire lead and a specialized 2-pin keyed connector plug. This configuration ensures a solid, polarized link directly onto the central processing unit motherboard. While modern 5370 controllers rely on capacitor modules, the 1769-BA cell remains a mandatory maintenance component to maintain process uptime and data protection across established 1769-L2x and L3x industrial layouts.

We deliver this item exclusively as 100% brand new, original, and factory-sealed to ensure maximum chemical charge level, peak capacity, and complete data safety for your running control software.

Technical Specifications

The table below specifies the technical chemical, electrical, and physical profiles for the 1769-BA battery module. All values appear in strict ASCII format.

Engineering Advantages

• Uninterrupted Data Persistence: The chemistry delivers steady 3.0V DC power directly to the processor's volatile volatile RAM during scheduled plant maintenance or unscheduled utility outages. This backup preserves user-defined registers, I/O maps, and step-logic configurations intact.
• Proactive Low-Voltage Warnings: The internal diagnostic system continuously reads the battery cell status. When the output drops below the safe operating threshold, the CPU lights up the physical "BATT" LED indicator on the outer cover, giving maintenance engineers a clear scheduling window to replace the assembly before any information degrades.
• Keyed Reverse-Polarity Defense: The 2-pin connector housing features a specific mechanical keyway layout. This molded plastic design physically stops technicians from inserting the socket backwards, preventing severe electrical short-circuiting or damage to the internal charging and monitoring circuits on the PLC motherboard.
• Safe Online Hot-Swap Execution: The hardware architecture allows safe replacement while the system is under power. If the primary 24V DC lines remain active, engineers can unplug and swap out an old 1769-BA cell without stopping the machine process, because the active backplane bus maintains the RAM block during the transition.

FAQs

• Is this 1769-BA battery a brand new factory item, and what is its shelf life?
• We sell this battery assembly solely in 100% brand new, original factory condition. Because it uses high-grade Lithium Thionyl Chloride chemistry, it maintains up to a 10-year shelf life when stored properly in ambient temperatures around 25 degrees Celsius.
• Can I use this replacement battery pack in modern CompactLogix 5370 L1 controllers?
• No. Modern CompactLogix processors (such as the 1769-L19ER-BB1B) utilize built-in, maintenance-free capacitor storage blocks to dump data onto an SD card during power failure. The 1769-BA battery satisfies the maintenance needs of older architectures like the 1769-L32E, 1769-L35E, and MicroLogix 1500 controllers.
• How often should my facility replace the 1769-BA battery under standard workloads?
• The cell generally lasts between 1 and 2 years. The exact depletion rate depends on how long the PLC remains unpowered; long shutdowns drain the battery cell faster as it must continuously run the RAM and clock circuits without support from the main line.
• Do I lose my program if I swap out the battery while the machine is running?
• No. As long as you keep the PLC powered up by its main power supply during the procedure, the backplane voltages protect the internal memory. You can pull out the old battery cell and plug in the fresh 1769-BA module without experiencing code loss or processor faults.