Product Summary
The Allen Bradley 1771-BA provides essential backup power for critical industrial controllers. This standard D-cell alkaline battery delivers a reliable 1.5-volt output with a substantial 17,000 mAh capacity. It specifically supports PLC-2/20 and PLC-2/30 systems to ensure operational continuity during power interruptions. Each controller requires two of these batteries for proper redundancy. This dependable power source is a key component for maintaining factory automation uptime.
Product Procurement & Buyer Guide
Procurement managers must select the correct backup power source for legacy systems. The 1771-BA is the precise battery required for PLC-2/20 and PLC-2/30 controllers. You cannot substitute a standard consumer D-cell for this industrial application. This battery features button-top terminals that ensure a secure connection. The alkaline chemistry provides a stable voltage output for sensitive electronics. You will need exactly two units per controller for full backup capability. This configuration offers approximately six months of backup at 60 degrees Celsius. At a cooler 45 degrees Celsius, the backup time extends to about twelve months. These specifications make it ideal for facilities with moderate ambient temperatures. Always verify the part number before placing your order to avoid downtime.
Installation Guide for 1771-BA Batteries
Installing the 1771-BA requires careful attention to polarity and placement. First, ensure the controller is powered down or in a safe state. Locate the dedicated battery compartment on the PLC-2/20 or PLC-2/30 unit. Insert each battery with the positive terminal facing the correct direction. The button-top design facilitates a snug fit within the holder. Always replace both batteries simultaneously to maintain balanced power delivery. Do not mix old and new batteries in the same controller. This practice prevents uneven discharge and potential data loss. After installation, verify the battery status indicator on the controller. A proper installation guarantees the memory retention and program integrity. Schedule replacements proactively based on your facility's ambient temperature.
Maintenance and Longevity Protocols
Implement a regular inspection schedule to maximize the 1771-BA battery lifespan. Check the voltage of each battery every three months with a multimeter. Look for any signs of leakage or corrosion at the terminals. Clean the battery contacts with a dry cloth if necessary. Replace the batteries immediately if the voltage drops below 1.3 volts. Remember that this is a non-rechargeable alkaline battery. You must dispose of used units according to local regulations. Operating controllers in cooler environments significantly extends the backup duration. A consistent temperature below 45 degrees Celsius yields the best performance. High heat accelerates chemical depletion and reduces standby time.
Deep-Dive Technical FAQ
What happens if only one 1771-BA battery fails?
The controller will lose its full power redundancy capability. This situation increases the risk of losing program memory during a power outage. Replace both batteries immediately to restore complete protection.
Can I use rechargeable D-cells as a substitute?
No, you cannot use rechargeable batteries in this application. The controller's charging circuit is not designed for rechargeable chemistries. Using them could damage the unit and void the warranty.
How does temperature affect the 1771-BA performance?
Higher temperatures accelerate the battery's self-discharge rate. At 60 degrees Celsius, you get about six months of backup. Lowering the ambient temperature to 45 degrees Celsius doubles that time.
What is the correct storage condition for spare units?
Store spare 1771-BA batteries in a cool, dry place. Ideal storage temperatures range between 10 and 25 degrees Celsius. Avoid storing them in direct sunlight or near heat sources.
Logistics & Standard Packaging Details
- One (1) Allen Bradley 1771-BA D-cell battery per package.
- Batteries are individually wrapped for protection during transit.
- Packaging includes a product data sheet for reference.
- Express shipping is available via FedEx, UPS, and DHL.
- Bulk orders ship in a reinforced cardboard box.
