Product Summary
The 1771-BA from Allen Bradley delivers critical backup power for aging PLC-2/20 and PLC-2/30 systems. This standard D-cell battery offers a robust 17,000 mAh capacity at 1.5 volts. Its alkaline chemistry ensures reliable energy when main power fails.
Why Choose the 1771-BA for Your PLC Backup Needs?
Key Procurement Considerations
Procurement engineers need a battery that matches exact OEM specifications. The 1771-BA fits that requirement perfectly. Each controller requires two of these batteries for proper redundancy. You gain up to 6 months backup at 60°C and 12 months at 45°C. This alkaline cell is non-rechargeable, which simplifies maintenance cycles. Its button-top terminals make installation quick and secure. Standardized dimensions guarantee a snug fit in your existing PLC chassis.
Technical Evaluation of Performance
From an engineering standpoint, the 1771-BA delivers consistent voltage discharge throughout its life. The 1.5-volt output matches the controller’s memory retention circuit requirements. With 17,000 mAh capacity, it sustains SRAM and program data for extended periods. The alkaline chemistry offers low self-discharge, reducing replacement frequency. Ambient temperature directly affects backup duration, so monitor your cabinet environment. The battery provides enough headroom to survive multi-day outages without data loss.
Installation and Replacement Guidelines
Always power down the controller before swapping the 1771-BA batteries. Remove the old D-cells and insert the new ones with positive button top facing outward. Reinstall the battery compartment cover securely. After replacement, verify the controller’s battery status indicator shows good condition. Perform this procedure every 6 to 12 months to prevent unexpected shutdowns. Store spare batteries in a cool, dry place to extend shelf life.
Logistics & Standard Packaging Details
- 2 x Allen Bradley 1771-BA standard D-cell batteries per package
- Factory-sealed alkaline cells with button-top terminals
- Individual protective packaging to prevent short circuits
- Express delivery available via FedEx, UPS, and DHL
- Bulk ordering options for maintenance stock
Frequently Asked Technical Questions
Does the 1771-BA work with newer PLC-5 controllers?
Yes, the 1771-BA also provides memory backup for many PLC-5 systems. Always check your specific controller manual for confirmation.
What happens if I use only one battery in a controller?
The controller needs both batteries to maintain proper voltage. Running with just one reduces backup time significantly and may cause data loss.
Can I recharge the 1771-BA alkaline battery?
No. This battery is non-rechargeable. Attempting to recharge it can cause leakage or rupture. Replace it with a new unit when depleted.
How do I know when to replace the 1771-BA?
Monitor the PLC’s low-battery alarm or LED indicator. Also replace it after the rated backup period if the ambient temperature stays within spec.
Is the 1771-BA compatible with third-party battery holders?
Yes, as long as the holder accepts standard D-cells with button tops. Ensure proper polarity alignment for reliable operation.
