Allen-Bradley | 1747-BA | SLC 500 (1747 Series)

Product Description: Allen-Bradley 1747-BA

The Allen-Bradley 1747-BA is a lithium backup battery used in SLC 500 processors and memory modules to retain user program and data during power loss. Designed for reliability and long service life, this battery ensures that volatile memory in SLC 5/03, 5/04, and 5/05 CPUs is preserved when system power is removed. It is a field-replaceable component and essential for maintaining data integrity in power-sensitive industrial environments.

Key Features

• Provides backup power for memory retention
• Compatible with SLC 5/03, 5/04, and 5/05 processors
• Lithium battery chemistry for extended service life
• Field-replaceable—plugs directly into the CPU battery socket
• Supports both static RAM and real-time clock functions
• Maintenance-free under normal conditions
• Designed for continuous protection during power loss

Technical Specifications

• Battery Chemistry: Lithium (non-rechargeable)
• Nominal Voltage: 3.0V DC
• Battery Capacity: Approx. 1200 mAh
• Expected Life: 2 to 5 years in typical operating conditions
• Shelf Life: Up to 10 years (uninstalled)
• Operating Temperature: 0°C to 60°C
• Storage Temperature: -40°C to 85°C
• Installation: Direct plug- in to compatible SLC CPU socket
• Certifications: UL Recognized, CE, RoHS

Application Areas

• Memory retention in SLC 500 control systems
• Industrial automation with critical data preservation needs
• OEM systems with scheduled power cycles or outages
• Equipment in remote locations without UPS protection
• Machines requiring sustained RTC functionality

Advantages

• Prevents data loss during power outages
• Simple, tool-free installation
• Long-lasting and reliable performance
• Essential for preserving controller logic and time data
• Fully compatible with the SLC 500 platform