Description
The Siemens 6ES7971-1AA00-0AA0 battery provides backup power for compatible Siemens SIMATIC S7-300 CPUs and S5-90U industrial automation equipment.
Siemens specifies a nominal voltage of 3.6V and a minimum capacity of 850mAh for this lithium backup battery. Additionally, the wired connector supports installation in equipment designed for the corresponding battery assembly.
This is a non-rechargeable primary lithium battery intended for supported PLC backup functions.
Key Features
- Siemens SIMATIC Battery: Part number 6ES7971-1AA00-0AA0.
- 3.6V Nominal Voltage: Matches the specified backup-battery voltage.
- 850mAh Minimum Capacity: Rated by Siemens as a minimum of 0.85Ah.
- Primary Lithium Battery: Non-rechargeable industrial battery technology.
- S7-300 Compatibility: Suitable for selected battery-backed SIMATIC S7-300 CPUs.
- S5-90U Application: Also specified by Siemens for compatible S5-90U equipment.
- Wired Connector: Includes leads and a connector for the approved interface.
- Pack of 1: Contains one backup battery assembly.
Siemens 6ES7971-1AA00-0AA0 Battery Specifications
| Specification | Details |
|---|---|
| Brand | Siemens |
| Product Series | SIMATIC S7 |
| Manufacturer Part Number | 6ES7971-1AA00-0AA0 |
| Battery Voltage | 3.6V |
| Minimum Capacity | 850mAh / 0.85Ah |
| Battery Type | Primary Lithium |
| Rechargeable | No |
| Connection | Wired Connector |
| Compatible Family | Selected S7-300 CPUs |
| Additional Application | S5-90U |
| Quantity | 1 Battery Assembly |
Compatible Siemens SIMATIC Controllers
Siemens specifies this battery for selected SIMATIC S7-300 CPUs and S5-90U equipment.
Some older S7-300 CPU models use battery-backed memory systems. However, other S7-300 variants use different memory arrangements and may not require this battery.
Therefore, always confirm the complete CPU model and the specified battery part number before purchasing.
Why Does a Siemens PLC Need a Backup Battery?
Certain industrial controllers use lithium batteries to retain designated information when the normal power supply becomes unavailable.
For example, a supported Siemens CPU may use battery-backed RAM or other retention functions.
Furthermore, regular battery maintenance can help reduce the risk of losing stored data during an interruption.
Nevertheless, the exact function depends on the CPU hardware and memory configuration.
Siemens 6ES7971-1AA00-0AA0 vs 6ES7971-0BA00
Both references identify Siemens industrial backup batteries, but they have different specifications and applications.
6ES7971-1AA00-0AA0
- Nominal voltage: 3.6V
- Minimum capacity: 850mAh
- Intended for selected S7-300 CPUs and S5-90U
6ES7971-0BA00
- Nominal voltage: 3.6V
- Rated capacity: 2300mAh
- Intended for specified S7-400 power supplies
Consequently, these models are not direct replacements for each other.
Always use the battery part number specified for your equipment.
Connector and Polarity Requirements
The battery assembly uses connecting wires and a plug connector.
However, connector appearance alone does not confirm compatibility. Check the wiring and pin arrangement before installation.
Incorrect polarity or an unsuitable connector could damage the equipment or prevent the backup function from working correctly.
Battery Installation and Replacement
- Identify the complete PLC CPU model.
- Verify the original battery part number.
- Read the applicable Siemens maintenance manual.
- Follow the required precautions to preserve retained data.
- Inspect the replacement battery, leads and connector.
- Replace the battery according to the Siemens procedure.
- Confirm the controller’s battery-status indication.
Important: Some industrial controllers require specific power and timing conditions during battery replacement. Qualified maintenance personnel should follow the exact manufacturer procedure.
Storage and Handling
Store the battery in suitable dry conditions and keep it away from excessive heat.
Additionally, protect the connector contacts from conductive materials.
Before installing a battery held in inventory, confirm its age, physical condition and storage history.
Do not use a battery with damaged insulation, loose wiring, leakage or other visible deterioration.
Important Battery Safety Instructions
- Never recharge this primary lithium battery.
- Do not short-circuit the connector terminals.
- Avoid crushing, puncturing or dismantling the cell.
- Keep away from excessive heat and fire.
- Do not reverse connector polarity.
- Never install a damaged battery.
- Store out of children’s reach.
- Dispose of exhausted batteries according to applicable regulations.
Frequently Asked Questions
What is the voltage of Siemens 6ES7971-1AA00-0AA0?
Its nominal voltage is 3.6V.
What is the rated battery capacity?
Siemens specifies a minimum capacity of 0.85Ah, equivalent to 850mAh.
Which PLC systems use this battery?
It is intended for selected SIMATIC S7-300 CPUs and S5-90U equipment.
Is this battery rechargeable?
No. It is a non-rechargeable primary lithium battery.
Can I use it instead of 6ES7971-0BA00?
No, not as a direct replacement. These references serve different Siemens equipment applications.
Does the battery include a connector?
Yes. The pictured assembly includes connecting wires and a plug connector.
Will it fit every S7-300 CPU?
No. Compatibility depends on the individual CPU model and its battery requirements.
How many batteries are supplied?
One battery assembly per package.
Buy Siemens 6ES7971-1AA00-0AA0 Backup Battery Online at ArcEin
Order the Siemens 6ES7971-1AA00-0AA0 3.6V 850mAh SIMATIC PLC Backup Battery from ArcEin for compatible industrial automation equipment.
For bulk orders, availability or part-number assistance, contact contactus@arcein.in.
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