Description
Siemens 6ES7971-0BA00 3.6V 2300mAh PLC Backup Battery
The Siemens 6ES7971-0BA00 PLC Backup Battery provides a dedicated backup power source for compatible Siemens SIMATIC S7-400 automation equipment.
This industrial lithium battery has a nominal voltage of 3.6V and a rated capacity of 2300mAh. Furthermore, Siemens specifies this part for selected PS 405 and PS 407 power-supply modules.
The battery uses non-rechargeable lithium-thionyl chloride chemistry. Therefore, it must only be installed in equipment designed for this primary lithium battery type.
Key Features
- Siemens SIMATIC Part: Identified by manufacturer part number 6ES7971-0BA00.
- 3.6V Nominal Voltage: Meets the specified backup-battery voltage requirement.
- 2300mAh Capacity: Siemens-rated 2.3Ah nominal capacity.
- S7-400 Compatibility: Intended for supported SIMATIC S7-400 power-supply modules.
- PS 405 / PS 407 Application: Suitable for specified power-supply configurations.
- Primary Lithium Chemistry: Non-rechargeable Li-SOCl₂ battery.
- AA Battery Format: Industrial AA-size cell, electrically different from standard alkaline AA batteries.
- Pack of 1: Contains one backup battery.
Siemens 6ES7971-0BA00 Battery Specifications
| Specification | Details |
|---|---|
| Brand | Siemens |
| Series | SIMATIC S7-400 |
| Manufacturer Part Number | 6ES7971-0BA00 |
| Battery Voltage | 3.6V |
| Rated Capacity | 2300mAh / 2.3Ah |
| Chemistry | Lithium Thionyl Chloride |
| Battery Format | AA |
| Battery Type | Primary Lithium |
| Rechargeable | No |
| Compatible Family | SIMATIC S7-400 |
| Compatible Power Supplies | Specified PS 405 and PS 407 modules |
| Pack Quantity | 1 |
| Package Origin Marking | Made in Germany |
Compatible Siemens PLC Equipment
The Siemens 6ES7971-0BA00 battery is intended for supported power-supply configurations within the SIMATIC S7-400 family.
For example, Siemens specifies the battery for applicable:
- PS 405 power-supply modules
- PS 407 power-supply modules
- SIMATIC S7-400 automation systems using the specified battery arrangement
However, compatibility varies by power-supply model and version.
Therefore, compare the equipment’s exact part number and manual before purchasing.
Why Is a PLC Backup Battery Important?
Industrial control systems may use battery-backed memory functions to retain relevant information when normal power becomes unavailable.
The backup battery provides the required reserve power for the supported circuitry.
However, the exact retention behaviour depends on the PLC hardware, memory configuration and power supply.
Consequently, always follow the Siemens documentation for your specific installation.
Siemens 6ES7971-0BA00 vs Standard AA Battery
Although the Siemens battery uses an AA-size format, it differs electrically from ordinary AA cells.
Siemens 6ES7971-0BA00
- Nominal voltage: 3.6V
- Rated capacity: 2300mAh
- Chemistry: Lithium Thionyl Chloride
- Type: Non-rechargeable industrial backup battery
Standard AA Alkaline Battery
- Nominal voltage: 1.5V
- Chemistry: Alkaline
- Type: Non-rechargeable consumer battery
Therefore, never substitute a standard AA alkaline or AA rechargeable battery for this Siemens component.
Battery Installation and Replacement
Before replacement, identify the correct Siemens power-supply model and consult its operating instructions.
- Verify the required battery part number.
- Review the applicable Siemens maintenance and replacement procedure.
- Follow the prescribed precautions for retaining PLC data and maintaining equipment safety.
- Access the battery compartment according to the equipment manual.
- Replace the battery with the correct polarity and approved specification.
- Check the power supply’s battery-monitoring indication after installation.
- Record the maintenance date according to your facility’s procedures.
Important: Incorrect replacement procedures can result in data loss or equipment downtime. Qualified industrial maintenance personnel should perform this work.
Battery Storage and Handling
Store unused batteries in their original protective packaging in a suitable dry environment.
In addition, avoid excessive heat and direct contact with conductive objects.
Before installation, check the battery’s condition, storage history and any manufacturer-specified replacement interval.
Important Safety Instructions
- Never recharge this primary lithium battery.
- Do not short-circuit, crush, puncture or dismantle the cell.
- Keep away from excessive heat, fire and moisture.
- Do not use a swollen, damaged or leaking battery.
- Do not install with reversed polarity.
- Keep away from children.
- Follow the equipment manufacturer’s maintenance instructions.
- Dispose of used industrial lithium batteries according to applicable regulations.
Frequently Asked Questions
What is the voltage of Siemens 6ES7971-0BA00?
The battery has a nominal voltage of 3.6V.
What is its rated capacity?
Siemens specifies a capacity of 2.3Ah, equivalent to 2300mAh.
Which Siemens PLC series uses this battery?
The battery is specified for compatible SIMATIC S7-400 PS 405 and PS 407 power supplies.
Is this battery rechargeable?
No. It uses non-rechargeable lithium-thionyl chloride chemistry.
Can I replace it with an ordinary AA battery?
No. Standard AA batteries do not have the same voltage and chemistry.
Will this battery work with every Siemens PLC?
No. Only use it in systems whose documentation specifies 6ES7971-0BA00 or an explicitly approved equivalent.
How many batteries will I receive?
One unit contains one backup battery.
Buy Siemens 6ES7971-0BA00 PLC Backup Battery Online at ArcEin
Order the Siemens 6ES7971-0BA00 3.6V 2300mAh SIMATIC S7-400 PLC Backup Battery from ArcEin for compatible industrial automation applications.
For bulk procurement, stock enquiries or help confirming a part number, contact contactus@arcein.in.
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