Order now: Allen-Bradley 1769-BA PLC Replacement Battery
Atlantechdrives provides you the 1769-BA, the essential lithium backup battery for the CompactLogix 1769-L2x and 1769-L3x controller series. This component is the primary safeguard for your system’s volatile memory, ensuring that user logic, tag data, and the real-time clock (RTC) are preserved during power outages or cabinet maintenance.
- Chemistry: Lithium (Li-SOCl2)
- Output Voltage: 3.0V DC
- Compatibility: CompactLogix 1769-L31, L32E, L35E, L32C, L35C, L23E
- Connection: 2-pin polarized connector
- Shelf Life: 10 years (at 25°C)
Technical Importance: Preserving PLC Logic and Data
Secure now the 1769-BA to prevent catastrophic data loss. In many legacy 1769 systems, the internal RAM is volatile; without a healthy 3.0V supply from the 1769-BA, the processor will lose its program the moment the main power supply (1769-PA2/PB2) is disconnected. This results in an «Empty Processor» fault, requiring a manual reload from a PC, which can cause hours of expensive downtime. The 1769-BA is engineered for the high-temperature environments found inside industrial control panels, featuring a high energy density and a stable discharge curve. When you procure the 1769-BA from Atlantechdrives, you are ensuring that your real-time clock remains synchronized for accurate alarm time-stamping and historical data logging.
Expert Tips: The «Power-On» Replacement Rule
To replace the 1769-BA without losing your logic, you must perform the swap while the PLC is powered on. If you remove the battery while the power is off, the RAM only has enough capacitive charge for approximately 30 to 60 seconds before it clears. Always ensure the 2-pin connector is pushed firmly into the socket until it clicks. Once the new battery is installed, the «BATT» LED on the front of the CompactLogix CPU should turn off immediately. Sourcing your 1769-BA from Atlantechdrives ensures you get a fresh, high-capacity cell with the correct voltage levels to maximize the backup duration.
Maintenance and Lifecycle Management
We recommend a proactive replacement of the 1769-BA every 2 years, regardless of whether the «BATT» LED is active. In environments where the panel temperature exceeds 40°C, the battery life is significantly shortened. Sourcing an authentic 1769-BA ensures that the battery’s internal resistance is low enough to provide the peak currents needed during the millisecond-long power transitions of the PLC.
FAQs
Q: Is the 1769-BA the same as the 1747-BA?
A: No. While both are 3V lithium, the 1769-BA has a specific connector and housing designed for CompactLogix, whereas the 1747-BA is for SLC 500 systems.
Q: What does a red BATT LED mean?
A: It indicates the battery voltage has dropped below the critical threshold. You should replace it within days to avoid program loss.
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This high-capacity lithium battery assembly is technically required for maintaining program memory in 1769-L35E processors.
