Saft LO40SX lithium battery is a Li-SO₂ cylindrical cell designed for long-lasting, stable, and reliable performance in industrial and electronic applications requiring high energy density and dependable discharge behavior.
When you shop with us, purchases can be returned within 30 days after placing your order.
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Model: |
LO40SX STS |
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Voltage: |
2.8 V |
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Nominal Capacity: |
3.5 Ah |
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Chemistry: |
Lithium-Sulfur Dioxide |
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Terminals: |
STS=Solder Tabs Facing Same Side (CNR) |
Lithium Battery Information Sheet
Product Overview
The Saft LO40SX is a high‑power primary lithium cell engineered for applications that demand instantaneous pulse current, stable voltage under heavy load, and reliable operation across extreme temperatures. As part of Saft’s LO‑series, it uses Lithium Sulfur Dioxide (Li‑SO₂) chemistry, which provides exceptional high‑rate discharge capability, strong cold‑temperature performance, and predictable safety behavior. The LO40SX is widely deployed in military, aerospace, industrial, and emergency‑response systems where ruggedness and long‑term reliability are essential.
High‑Power Electrical Performance
The LO40SX is optimized for fast‑response, high‑drain workloads, making it ideal for devices that must activate instantly and deliver strong bursts of power. Its spiral‑wound internal design supports:
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Strong pulse output for RF transmissions, encrypted radios, and telemetry
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High continuous discharge capability for active electronics
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Stable operating voltage under heavy load
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Reliable performance in low‑temperature and harsh outdoor environments
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Multi‑year storage with minimal voltage degradation
This performance profile makes the LO40SX a dependable choice for systems requiring immediate responsiveness and consistent high‑rate power delivery.
Chemistry Profile: Li‑SO₂ for High‑Rate, Harsh‑Environment Use
The LO40SX uses Li‑SO₂ chemistry, selected for its ability to deliver:
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High‑rate discharge and strong pulse currents
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Stable voltage under demanding electrical loads
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Excellent cold‑temperature performance
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Controlled venting and predictable safety characteristics
This chemistry is widely used in defense and industrial systems where power delivery, safety, and reliability are top priorities.
Mechanical and Environmental Durability
The LO40SX is built for environments where ruggedness and reliability are non‑negotiable:
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Hermetically sealed stainless‑steel housing for leak‑proof operation
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High resistance to shock, vibration, and mechanical stress
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Wide operating temperature range suitable for aerospace, defense, and industrial deployments
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Integrated safety vent for controlled pressure management
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Long shelf life for extended standby or storage
These characteristics ensure stable performance even in mission‑critical or remote installations.
Typical Applications
The LO40SX is widely used in sectors that require high‑rate discharge, rugged construction, and long‑term reliability:
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Military radios, beacons, and encrypted communication systems
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Aerospace emergency modules and avionics
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High‑power industrial IoT sensors
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Electromechanical actuators and control systems
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Oil & gas instrumentation and pipeline monitoring
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Security and intrusion detection systems
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Remote telemetry and SCADA equipment
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Emergency backup and fail‑safe power modules
These systems benefit from the LO40SX’s ability to deliver instantaneous current while maintaining stable performance over long service intervals.
Why Engineers Choose the LO40SX
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High‑power Li‑SO₂ chemistry with strong pulse capability
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Stable voltage delivery under heavy load
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Excellent cold‑weather and extreme‑temperature performance
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Rugged stainless‑steel construction for harsh environments
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Predictable safety behavior with controlled venting
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Maintenance‑free operation for sealed or remote systems
The LO40SX is often selected when designers need a high‑power primary lithium cell capable of long‑term reliability in extreme conditions.
Product Description
Saft LO40SX is a Primary Lithium-Sulfur Dioxide (Li-SO2) cylindrical cell and is ideally suited for radiocommunications, automotive telematics, and military applications.
Product Details
LO40SX is a 2.8 V Primary lithium-sulfur dioxide (Li-SO2) Cylindrical Cell that has a high and stable discharge voltage, long storage life, ability to withstand extreme temperature, spiral construction, hermetic glass-to-metal-sealing, and meets requirements of military specifications.
Product Specifications
- Part number: LO40SX
- Size: 2/3 thin D
- Voltage (V): 2.8 V (Nominal)
- Capacity (Ah): 3.5 Ah (Nominal)
- Discharge Current (mA): 2.0 A (Nominal)
- Temperature Range (°C): - 60 / + 70°C
- Diameter (mm): 28.95 mm
- Height (mm): 42.29 mm
- Primary Type: Non-Rechargeable
- Made in: USA
- Chemistry: Lithium-Sulfur Dioxide
- Standard Termination: STS=Solder Tabs Facing Same Side (CNR)
- Value Added Services: Flying Leads, Custom Battery Pack Assembly
Product Features
- Superior drain and pulse capability
- High and stable discharge voltage
- Performance not affected by cell orientation
- Long storage possible before use
- Ability to withstand extreme temperature
- Low self-discharge rate
- Hermetic glass-to-metal sealing
- Built-in safety vent
Our Company
Ttek Assemblies, Inc (TtekAI) is a long time, trusted Saft Battery assembler and distributor. We provide a wide variety of custom batteries and battery packs made with Saft cells in rechargeable and non-rechargeable chemistries. Our batteries service a diverse range of applications and industry requirements including medical, military, test & measurement, portable electronics, and more. based on customer specifications.
When you shop with us and buy Saft LO40SX, purchases can be returned within 30 days after placing your order. Buy in stock at a discount today.
Value Added Services
If you are looking for a custom-made battery pack with Saft cells, please fill out our Custom Battery Quote Form.
Shipping Notice: This product contains Lithium. Air shipments of this product are unavailable at this time.