SAFT LO 25 SX – 3.0V 8Ah Lithium-Sulfur Dioxide Battery
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SAFT LO 25 SX is a 3.0V 8Ah primary Lithium-Sulfur Dioxide (Li-SO₂) battery in a Fat D-size spiral-cell format. Designed for high-drain applications, it offers high pulse capability, stable discharge voltage, low self-discharge and a wide operating temperature range. Typical applications include military electronics, radio communications, beacons, emergency location transmitters and professional industrial equipment.
SAFT LO 25 SX – 3.0V 8Ah Lithium-Sulfur Dioxide Battery
Product Specifications
| Battery Chemistry | Lithium-Sulfur Dioxide (Li-SO₂) |
|---|---|
| Battery Type | Non-rechargeable primary lithium battery |
| Cell Construction | Spiral |
| Cell Size | Fat D |
| Diameter | 39.5 mm |
| Environmental Performance | Designed to withstand shock; vibration and extreme temperatures |
| Height | 50.3 mm |
| Key Advantage | High and stable discharge voltage; very high pulse capability; low self-discharge; long storage capability; wide operating temperature range |
| Manufacturer | SAFT |
| Maximum Recommended Continuous Current | 2.5 A |
| Model | LO 25 SX |
| Nominal Capacity | 8.0 Ah |
| Nominal Energy | 24 Wh |
| Nominal Voltage | 3.0 V |
| Nominal Voltage Under Load | 2.8 V at 0.6 A |
| Open Circuit Voltage | 3.0 V at +20°C |
| Operating Temperature | -60°C to +70°C |
| Primary Applications | Military equipment; radiocommunications; beacons; emergency location transmitters; sonobuoys; missiles |
| Product Name | SAFT LO 25 SX Lithium Battery |
| Product Series | SAFT LO/G |
| Product Type | Primary Lithium-Sulfur Dioxide (Li-SO₂) Battery |
| Pulse Capability | Typically up to 10 A |
| Safety Feature | Built-in safety vent |
| Sealing | Hermetic glass-to-metal sealing |
| Self-Discharge | Less than 3% after 1 year at +20°C |
| Storage Temperature | +30°C maximum recommended |
| Terminal Configuration | Standard cell with radial nickel tabs |
| Transport Classification | Class 9 |
| Typical Weight | 96 g |
| UL Recognition | UL Component Recognition |
The SAFT LO 25 SX is a high-performance 3.0V 8Ah primary lithium battery based on Lithium-Sulfur Dioxide (Li-SO₂) chemistry. Designed in a large Fat D-size spiral-cell format, it is engineered for applications requiring high drain capability, high pulse performance and reliable power in demanding environments.
Unlike SAFT’s LS and LSH families, which primarily use Lithium Thionyl Chloride (Li-SOCl₂), the LO 25 SX uses Lithium-Sulfur Dioxide (Li-SO₂) technology. SAFT identifies the LO25SX as a 3.0V, 8Ah, 1S1P primary lithium cell.
Key Features
- Brand: SAFT
- Model: LO 25 SX / LO25SX
- Battery type: Primary lithium battery
- Chemistry: Lithium-Sulfur Dioxide (Li-SO₂)
- Nominal voltage: 3.0V
- Nominal capacity: 8Ah / 8000mAh
- Cell format: Fat D-size
- Construction: Spiral cell
- Maximum continuous current: Approximately 2.5A
- High pulse capability
- Low self-discharge
- Stable discharge voltage
- Long storage capability
- Wide operating temperature range
- Hermetic glass-to-metal sealing
- Built-in safety vent
- Suitable for demanding professional applications
Technical Specifications
| Specification | SAFT LO 25 SX |
|---|---|
| Chemistry | Lithium-Sulfur Dioxide (Li-SO₂) |
| Nominal Voltage | 3.0V |
| Capacity | 8Ah |
| Cell Size | Fat D |
| Construction | Spiral |
| Diameter | Approx. 39.5mm |
| Height | Approx. 50.3mm |
| Typical Weight | Approx. 92–96g |
| Maximum Continuous Current | Approx. 2.5A |
| Pulse Capability | Up to approximately 10A, depending on conditions |
| Operating Temperature | Approximately -60°C to +70°C |
| Battery Type | Primary / non-rechargeable |
Published SAFT-related specifications list the LO25SX at approximately 39.5mm diameter × 50.3mm height, with a typical weight around 96g and operating temperature from -60°C to +70°C.
Applications
The SAFT LO 25 SX is designed for high-power professional applications where reliable primary lithium power is required, including:
- Military electronics
- Tactical communication equipment
- Radio communication systems
- Beacons
- Emergency location transmitters
- Professional tracking equipment
- Remote monitoring systems
- Industrial electronics
- High-drain electronic equipment
- Specialized defense and aerospace equipment
SAFT documentation specifically identifies radiocommunications and military applications among the main applications for the LO25SX family.
High-Drain Lithium-Sulfur Dioxide Technology
The LO 25 SX uses a spiral electrode construction, providing a large active-material surface area for high-power discharge and pulse performance. This makes the cell particularly useful in equipment that may require substantial current bursts rather than only very low continuous current.
SAFT describes the LO25SX as providing high and stable discharge voltage, very high pulse capability, performance that is not affected by cell orientation, long storage capability and resistance to extreme temperatures.
The cell also incorporates hermetic glass-to-metal sealing and a built-in safety vent. SAFT documentation identifies the cell as a Class 9 restricted-transport lithium battery.
The SAFT LO 25 SX is a primary, non-rechargeable battery and must not be recharged. Battery selection should be based on the equipment’s required voltage, current profile, physical dimensions and terminal configuration.