Tadiran SL-2870P Lithium battery C with 3.6 V and 8.5 Ah, with axial arrester

The Tadiran SL-2870P is a special lithium thionyl chloride battery in the C (Baby) size, designed for reliable long-term operation in an extended temperature range of up to +125 °C. It combines a very high capacity of 8.5 Ah with the ability to withstand demanding thermal conditions. This version is pre-assembled with an axial lead (pins) for secure and vibration-resistant installation and is ideal for professional industrial and automotive applications.

Highlights at a glance

• Extended temperature range: Reliable operation from -55 °C to +125 °C.
• High capacity: 8.5 Ah for very long runtimes in demanding environments.
• Ready to install: With robust, axial leads for direct and secure solder mounting.
• High rated voltage: Stable voltage level of 3.6 V even at high temperatures.
• Maximum longevity: Very low self-discharge and proven long-term stability.

Powerful in a wide range of applications

The Tadiran SL-2870P was specifically developed for applications whose operating temperature exceeds the limit of standard lithium batteries (+85 °C). Its main applications include automotive electronics (e.g. toll systems, tracking), industrial sensors in demanding production environments, outdoor devices with strong sun exposure and professional security equipment that must function reliably in all climate zones.

Designed for increased thermal load

The exceptional thermal durability of the SL-2870P is based on its special construction and optimised electrolyte chemistry. The hermetic glass-to-metal seal is designed to maintain its tightness even at elevated temperatures and repeated temperature cycles. This ensures the highest possible level of safety and reliability over the entire, long service life of the cell.

Superior lithium thionyl chloride technology

Lithium thionyl chloride technology (Li-SOCl₂) is the gold standard for long-term applications. A characteristic feature is the passivation effect: A thin protection layer forms on the lithium anode, which reduces self-discharge to an absolute minimum and thus enables extremely long shelf and operating life. This version retains its performance and reliability even under thermal conditions that would be critical for standard cells.
 

Features

FAQs about this Tadiran battery

What is the difference between this (+125°C) and a standard (+85°C) Tadiran cell?

The key difference is the extended upper operating temperature range of +125 °C compared to +85 °C for standard cells. This is achieved through a special, more heat-resistant internal design and an adjusted chemistry, which guarantees reliable long-term operation in high-heat environments.

Do I need this cell or the high temperature series (+130°C)?

This cell (up to +125°C) is the ideal and economical choice for most demanding industrial and automotive applications. The high-temperature series (SL-500, up to +130°C) is designed for even more extreme niche applications such as deep drilling in the oil and gas industry ("downhole drilling").

What does the "axial lead" connection mean?

"Axial lead" is a technical term for connection wires (pins) that exit 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.

Is this battery rechargeable?

No, this is a primary lithium battery and must not be recharged under any circumstances. Attempting to charge the cell is dangerous and may lead to overheating, leaks, or rupture of the cell.

What does the passivation effect mean for this battery?

After prolonged storage, a protective layer forms on the lithium surface. This layer is the reason for the extremely low self-discharge. On first load, it can lead to a short voltage delay. This should be taken into account in the circuit design for applications that require power immediately after activation.