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

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

Highlights at a glance

• Extreme temperature range: Reliable operation from -55 °C to +130 °C.
• For PCB mounting: Pre-assembled with radial pins for direct installation.
• Extremely compact format: 1/2 AA size for miniaturised high-temperature applications.
• High rated voltage: Stable voltage level of 3.6 V even at extreme heat.
• Outstanding longevity: Very low self-discharge and proven long-term stability.

Powerful in extreme applications

The Tadiran SL-550PR was specifically developed for applications in which standard lithium batteries would fail due to high temperatures and a permanent soldering connection is required. The radial pins allow a specific and space-saving arrangement on the PCB. Its main 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.

Engineered for maximum heat resistance

The exceptional thermal load capacity of the SL-550PR is based on its reinforced construction and optimised electrolyte chemistry. The hermetic glass-to-metal seal is specifically designed to maintain its integrity even under repeated temperature cycles and to prevent leakage. The non-flammable electrolyte and robust stainless steel casing 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 known for its longevity under extreme conditions. A characteristic feature is the passivation effect, which minimises self-discharge and enables a shelf life of over 10 years. This high-temperature variant maintains its performance and reliability even under conditions well outside the specifications of conventional batteries.
 

Features

FAQs about this Tadiran high-temperature battery

What distinguishes this battery from a standard Tadiran cell?

The crucial 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 a customised chemistry, guaranteeing reliable operation under extreme heat.

What does the connection with "radial pins" mean?

Unlike axial connections that exit from the centre of the poles, radial pins are arranged so that they extend from one end face of the battery. This configuration is optimised for specific layouts on printed circuit boards (PCBs) and enables particularly stable and defined mounting of the cell.

For which applications is this battery type essential?

This battery type is essential for all devices whose operating temperature continuously or periodically exceeds +85 °C. Typical examples include measuring instruments for oil production, sensors in vehicle engine compartments or electronics used in industrial ovens or autoclaves.

Is this battery rechargeable?

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

Does the high temperature affect the service life of the battery?

Yes, as with any battery, a permanently high operating temperature leads to increased self-discharge and can shorten the total service life compared to operation at room temperature. However, the SL-550PR is specifically engineered to minimise this effect and achieve the maximum possible service life under these harsh conditions.