Tadiran SL-550S high temperature lithium battery 1/2 AA with 3.6 V and 0.8 Ah

The Tadiran SL-550S is a special high-temperature lithium thionyl chloride battery in the extremely compact 1/2 AA form factor. It is designed for maximum reliability and long service life under extreme thermal loads. With its ability to operate continuously at temperatures of up to +130 °C, it sets the standard for the most demanding industrial applications. It offers a nominal voltage of 3.6 V, a capacity of 0.8 Ah, and in this S version is intended for use in battery holders.

Highlights at a glance

• Extreme temperature range: Reliable operation from -55 °C to +130 °C.
• Maximum reliability: Designed for use under the harshest environmental conditions.
• Compact form: 1/2 AA size for use in miniaturised high-temperature applications.
• High nominal voltage: Stable voltage level of 3.6 V even at high temperatures.
• Outstanding longevity: Very low self-discharge and proven long-term stability.

Powerful in extreme applications

The Tadiran SL-550S was specifically developed for applications where standard lithium batteries would fail due to high temperatures. Its primary areas of application include oil and gas exploration (e.g. "downhole drilling" measurement technology), automotive applications in the engine compartment, monitoring of industrial high-temperature processes, as well as use in autoclaves and medical sterilisation equipment. It is also the first choice for demanding military and aerospace systems.

Engineered for maximum heat resistance

The exceptional thermal load resistance of the SL-550S is based on its reinforced construction and an optimised electrolyte chemistry. The hermetic glass-to-metal seal is specially designed to maintain its integrity and prevent leakage even during repeated temperature cycles. The non-flammable electrolyte and robust stainless steel casing ensure maximum safety, even at the upper temperature limit.

Superior high-temperature technology

The lithium-thionyl chloride technology (Li-SOCl₂) of the SL-500 series is known for its longevity. A characteristic feature is the passivation effect, which minimises self-discharge and enables a storage life of over 10 years. This high-temperature version maintains its performance and reliability even under conditions far outside the specifications of conventional batteries.

Features

FAQs about this Tadiran high-temperature battery

What sets this battery apart from a standard Tadiran cell?

The key difference is the extended operating temperature range of up to +130 °C, whereas standard cells such as the SL-750 are only specified up to +85 °C. This is made possible by a special, heat-resistant internal construction and adapted chemistry that ensures reliable operation in extreme heat.

For which applications is this battery type essential?

This battery type is required for all devices whose operating temperature permanently or periodically rises above +85 °C. Typical examples are measuring instruments in oil production, sensors in the engine compartment of vehicles, or electronics used in industrial furnaces or autoclaves.

Does this model have solder terminals or wires?

No, the SL-550S model is the standard version with normal battery contacts and is intended for use in a suitable 1/2 AA battery holder. For direct installation, Tadiran also offers high-temperature variants with various solder terminals.

Is this battery rechargeable?

No, this is a primary lithium battery and must not be recharged under any circumstances. Trying to charge the cell is especially dangerous at high temperatures.

Does the high temperature affect the battery service life?

Yes, as with any battery, consistently high operating temperature leads to increased self-discharge and may shorten overall service life compared to operation at room temperature. However, the SL-550S is specifically engineered to minimise this effect and achieve the longest possible life under these tough conditions.