
Allen-Bradley 1747-BA SLC 500 Lithium Battery Replacement
Product Summary
The 1747-BA is a critical 3-volt lithium battery for your SLC 500 system. It provides reliable backup power to protect your RAM data and program logic. This genuine Allen-Bradley part ensures your processor maintains its state during a power loss. It is a non-rechargeable unit that you can easily replace. Trust this battery to keep your industrial operations running smoothly.
Step-by-Step User & Installation Guide
You must follow safe procedures to install the 1747-BA correctly. First, power down the entire SLC 500 chassis to prevent electrical hazards. Locate the battery compartment on your processor module, such as the 1747-L511 or 1747-L514. Remove the old battery carefully without touching the metal contacts with your tools.

Insert the new 1747-BA battery firmly into the connector. The unit uses a 6-Pin Phoenix connector for a secure fit. Ensure the battery sits flat and the cable does not pinch against the chassis. Power the system back on and check the processor’s battery LED. A steady green light confirms your installation is successful.
Do not attempt to recharge this lithium battery. It is designed for single-use applications only. You should always replace all batteries in a multi-cell system at the same time. This practice ensures balanced power delivery and reliable performance. Store the battery in a cool, dry place before installation.
Maintenance, Troubleshooting & Longevity Protocols
You must monitor the processor’s battery LED for low voltage warnings. This indicator will alert you when the 1747-BA needs replacement. The typical lifespan for this battery is about 2 years for a SLC 5/03 processor. It can provide up to 5 years of backup for a 1747-L511 module. Regularly check the ambient temperature of your control cabinet.

Keep your storage environment between 20-25°C with 40-60% relative humidity. Do not expose the 1747-BA to water, rain, snow, or frost. You must never short-circuit, disassemble, or heat this battery. Avoid placing it on metal plates or antistatic materials. These actions can cause damage or create a safety hazard.
The 1747-BA contains 0.23 grams of lithium metal. This classifies it as a Class 9 Dangerous Good for transport. You can ship up to two batteries together within the United States. Always follow UN recommendations for international shipping regulations. Regularly monitor your storage area to maintain optimal conditions.
Logistics & Standard Packaging Details

- One (1) genuine Allen-Bradley 1747-BA lithium battery
- Pre-installed cable with a 6-Pin Phoenix connector
- Standard product documentation for installation reference
- Packaging compliant with Class 9 dangerous goods regulations
We ship this item using express delivery services. You can select FedEx, UPS, or DHL at checkout. This ensures fast and reliable delivery to your facility. The product weighs just 0.37 pounds for easy handling. Its dimensions are 5.72 x 1.37 x 5.15 inches for compact storage.