New Original Siemens 6ES7971-0BA00 BACK-UP BATTERY
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Product Description for Siemens 6ES7971‑0BA00 Backup Battery
1. Product Overview
6ES7971‑0BA00 is an original Siemens lithium‑based backup battery specially designed for SIMATIC S7‑400 PLC system. It is installed on S7‑400 power‑supply modules (PS407 and PS405). When the cabinet main power supply fails, this battery offers stable standby power to retain CPU program, data block, hardware configuration and system clock data stored in RAM memory. Without this backup battery, all runtime data will get lost after power‑off. This battery is widely used in petro‑chemical plants, power stations, metallurgy workshops and cement factories adopting S7‑400 controllers. It is a replaceable consumable component with fixed service life to ensure data integrity for long‑term industrial‑site operation.
2. Main Functions
- RAM Data Preservation
It supplies power to CPU internal RAM after mains power is cut‑off. Program parameters, production set‑values, fault records and runtime variables can be stored safely.
- Real‑Time Clock Maintenance
It keeps the system real‑time clock running normally during power‑failure periods so that time stamps for alarms and historical data remain accurate.
- Low‑Battery Monitoring
The power‑supply module continuously detects battery voltage. If the battery capacity declines below threshold value, PS module triggers LED warning and sends diagnostic messages to S7‑400 CPU for timely replacement.
- Short‑circuit Protection
Built‑in safety circuit prevents short‑circuit current outflow to avoid damage to PS‑400 internal circuits.
- Easy Replacement Design
Users can change the battery while the PLC system is powered‑on, which avoids shutdown and production interruption during battery replacement.
- Compatibility Matching
This battery works with all standard PS405 and PS407 power‑supply units for central racks and expansion racks of S7‑400.
3. Technical Characteristics
表格
| Item | Specific Parameters |
|---|---|
| Order Number | 6ES7971‑0BA00 |
| Battery Type | Lithium‑Thionyl Chloride Battery |
| Rated Voltage | 3.6 V DC |
| Typical Capacity | 2300 mAh |
| Service Life | Up to 5 years under 25‑degree‑C ambient temperature; shorter lifespan under high‑temperature environment |
| Stand‑by Working Current | Approximately 12 μA |
| Operating Ambient Temperature | 0 ℃ ~ +60 ℃ during operation |
| Storage Temperature | ‑40 ℃ ~ +85 ℃ |
| Low‑battery Alarm Threshold | 3.0 V DC |
| Protection Performance | Internal fuse for short‑circuit protection |
| Installation Position | Battery slot of PS405‑407 power‑supply module |
| Housing Material | Plastic shell with anti‑corrosion property |
| Certifications | CE, UL certified; Made in Germany |
4. Product Dimensions and Weight
表格
| Physical Parameter | Actual Value |
|---|---|
| Length | 45 mm |
| Diameter | 17 mm |
| Net Weight of single battery | About 28 g |
| Gross weight with original package | Approximately 40 g |
| Installation Method | Direct plug‑in installation into battery compartment of S7‑400 power‑supply module |
5. Application Scope
This backup battery is dedicated for S7‑400 PLC power‑supply modules. It applies to process‑automation projects that require continuous data retention including thermal power plants, chemical production lines, wastewater‑treatment control systems and large‑scale automated assembly stations.
6. Ten Siemens backup batteries with similar‑function for SIMATIC PLC systems
- 6ES7971‑0AA00: Compact‑size 1100 mAh backup battery for S7‑400 PS modules used in cabinets with limited installation space.
- 6ES7971‑0BB00: High‑capacity 3600 mAh battery for S7‑400H redundant system to extend standby duration.
- 6ES7972‑0AA00: External backup battery pack for S7‑400 which provides longer‑time data retention for sites with frequent power‑failure.
- 6ES7180‑0AA00: Backup battery designed for ET200M remote I/O modules to save local channel‑diagnosis data.
- A5E00331084: Backup battery for S7‑300 CPU 31x series to hold RAM data of S7‑300 controllers.
- 6ES7971‑0CA00: SIPLUS version of 6ES7971‑0BA00, adapted for high‑humidity and corrosive industrial environments.
- 6ES7971‑0DA00: Low‑temperature type battery which works normally between ‑20 ℃ and +60 ℃ for cold‑area outdoor cabinets.
- 6ES7971‑0EA00: Extended‑life version with optimized internal chemical composition for up to 8‑year service cycle.
- 6ES7971‑0FA00: Double‑battery assembly for S7‑400 expansion racks to supply backup power for multi‑rack systems.
- 6EP1962‑1BA00: External rechargeable backup battery unit used for long‑term backup of S7‑400 and SCADA related equipment.
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WHO WE ARE
About us
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
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We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
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