Siemens Backup Battery

The 6ES7971-0BA00 is a backup battery manufactured by Siemens for use with the SIMATIC S7-400 automation system. It ensures that important data (like RAM contents and real-time clock information) is retained in the event of a power failure.

Product Overview:

• Product Name: Backup Battery

• Model Number: 6ES7971-0BA00

• Brand: Siemens

• System Compatibility: SIMATIC S7-400, specifically with PS 405 and PS 407 power supply modules

Technical Specifications:

• Battery Type: Lithium

• Voltage: 3.6 V

• Capacity: 2.3 Ah

• Form Factor: Cylindrical (AA size)

• Temperature Range: –55°C to +85°C

• Shelf Life: Up to 10 years

• Weight: Approx. 25 grams

Functions:

• Maintains memory contents in the CPU during power outages

• Keeps the real-time clock running

• Critical for uninterrupted control operations in industrial environments

Compatible Power Supplies:

• PS 405: 4 A / 10 A / 20 A

• PS 407: 4 A / 10 A / 20 A