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

The Tadiran SL-550P is a special high-temperature lithium thionyl chloride battery in the extremely compact 1/2 AA format. It was designed for maximum reliability and long service life under extreme thermal loads. With its ability to operate continuously at temperatures up to +130 °C, it is the ideal energy solution for miniaturised industrial applications. This version comes with robust axial pins pre-configured for direct and secure mounting 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 nominal voltage: Stable voltage level of 3.6 V even in extreme heat.
• Outstanding longevity: Very low self-discharge and proven long-term stability.

Powerful in extreme applications

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

Designed for maximum heat resistance

The exceptional thermal endurance of the SL-550P is based on its reinforced construction and optimised electrolyte chemistry. The hermetic glass-to-metal seal is specially designed to preserve its integrity and prevent leakage even during repeated temperature cycles. The non-flammable electrolyte and robust stainless steel casing ensure the highest level of 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 version retains its performance and reliability even under conditions that are far outside the specifications of conventional batteries.
 

Characteristics

FAQs about this Tadiran high-temperature battery

What distinguishes this battery from a standard Tadiran cell?

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

What does the connection with "axial pins" mean?

This model is fitted with connection wires (pins) that protrude centrally from the positive and negative terminals of the cell. This configuration is intended for through-hole mounting on printed circuit boards (PCBs) and enables a very robust and permanent solder connection.

For which applications is this battery type essential?

This battery type is required for all devices whose operating temperature permanently or periodically exceeds +85 °C. Typical examples include instrumentation 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 under no circumstances be recharged. Attempting to charge the cell is extremely dangerous, especially at high temperatures.

Does high temperature affect battery life?

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