Tadiran SL-550PT High temperature lithium battery 1/2 AA with 3.6 V and 0.8 Ah, with pins +1/-2

The Tadiran SL-550PT is a special high-temperature lithium thionyl chloride battery in the extremely compact size 1/2 AA. It was designed for maximum reliability and long operational life under extreme thermal stress. With the ability to operate continuously at temperatures up to +130 °C, it is the ideal energy solution for miniaturised industrial applications. This version comes equipped with robust axial pins for direct and secure assembly on circuit boards.

Highlights at a glance

• Extreme temperature range: Reliable operation from -55 °C to +130 °C.
• Ready to install: With robust, axial pins for direct solder mounting.
• Extremely compact design: 1/2 AA size for miniaturised high-temperature applications.
• High rated voltage: Stable voltage of 3.6 V even under extreme heat.
• Outstanding longevity: Very low self-discharge and proven long-term stability.

Powerful in extreme applications

The Tadiran SL-550PT was specifically developed for applications where standard lithium batteries would fail due to high temperatures and a fixed solder connection is required. Thanks to its miniaturised 1/2 AA size, it is ideal for devices with space constraints. Its primary areas of application include oil and gas exploration (e.g. downhole drilling measurement technology), automotive use in engine compartments, monitoring of industrial high-temperature processes, as well as use in autoclaves and medical sterilisation devices.

Engineered for maximum heat resistance

The outstanding thermal durability of the SL-550PT is based on its reinforced construction and optimised electrolyte chemistry. The hermetic glass-to-metal seal is specifically designed to maintain its integrity and prevent leaks even with repeated thermal cycling. The non-flammable electrolyte and robust stainless steel shell ensure maximum safety, even at the upper end of the temperature range.

Superior high-temperature technology

The lithium thionyl chloride technology (Li-SOCl₂) of the SL-500 series is renowned for its longevity under extreme conditions. A characteristic feature is the passivation effect, which minimises self-discharge and allows storage for over 10 years. This high-temperature version retains its performance and reliability even under conditions that are far outside the specifications of standard batteries.

FAQs about this Tadiran high-temperature battery

What distinguishes this battery from a standard Tadiran cell?

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

What does the connection with "axial pins" mean?

This model is equipped with connection wires (pins) that emerge centrally from the positive and negative pole of the cell. This configuration is designed for through-hole mounting on printed circuit boards (PCBs) and enables a very robust and permanent soldered connection.

For which applications is this battery type essential?

This battery type is required for all devices where the 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 ovens or autoclaves.

Is this battery rechargeable?

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

Does high temperature affect the battery's lifetime?

Yes, as with any battery, permanently high operating temperature leads to increased self-discharge and can shorten the overall lifetime compared to room temperature operation. However, the SL-550PT is specially engineered to minimise this effect and achieve the maximum possible lifetime under these harsh conditions.