Saft Lithium round cell LS26500 LF-U with 3.6 V and 7.7 Ah

The Saft LS26500 LF-U is a high-performance lithium thionyl chloride battery (Li-SOCl2) in size C, which is assembled with U-shaped solder tags for flexible and robust mounting. This special version is based on the powerful LS26500 cell and offers a nominal voltage of 3.6 V as well as a very high capacity of 7.7 Ah. Thanks to its extremely low self-discharge, it is the ideal energy source for long-life industrial electronics with high energy requirements.

Highlights at a glance

• Flexible mounting: U-shaped solder tags (LF-U) for versatile installation positions
• Very high capacity: 7.7 Ah in the C size for maximum runtime
• Powerful: High and stable operating voltage of 3.6 V
• Extremely long-lasting: Very low self-discharge of less than 1 % per year
• Robust: Hermetically sealed stainless steel housing for maximum operational safety
• Versatile: Usable in a wide temperature range from -60 °C to +85 °C

Powerful for versatile industrial applications

The Saft LS26500 LF-U was designed for use in professional devices in which the battery is not soldered directly onto a circuit board, but requires a flexible connection. The U-shaped solder tags enable a secure connection using cables or in special battery holders. Typical applications include memory backup systems (memory backup), alarm systems, maritime buoys, counters, and industrial control units that require a reliable and long-lasting power supply.

Efficiency and guaranteed safety

The proven lithium thionyl chloride technology guarantees a reliable energy output over many years. The cell is hermetically sealed by means of a glass-to-metal seal to minimise the risk of current leakage and has a non-flammable electrolyte, which significantly increases operational safety. The LS26500 LF-U complies with the IEC 60086-4 safety standard and is UL certified.

Robust Li-SOCl2 technology for industrial use

Lithium thionyl chloride chemistry stands for superior energy density and exceptionally long service life. Compared to other battery technologies, it offers stable voltage up to the end of the discharge cycle. The robust design reliably protects the cell against corrosion and mechanical stress and thus ensures the functionality of your application over the entire product life cycle.


Features
 

FAQs about the Saft LS26500 LF-U lithium round cell

What does the designation LF-U mean?

The LF-U marking describes the type of connections of the battery. "LF" stands for solder tag and the "U" specifies their shape as U-shaped solder tags. These make it possible to solder cables or use in certain holders, which offers high flexibility during installation.

Is the Saft LS26500 LF-U rechargeable?

No, the LS26500 LF-U is a lithium primary battery and must not be charged under any circumstances. Any attempt to charge it is dangerous, damages the cell and can lead to leakage or deflagration.

What is the difference to the versions with pins (e.g. 2PF)?

While versions with pins (PF) are intended for direct mounting into the holes provided on a circuit board, the U-shaped solder tags (LF-U) offer more flexibility. Cables of different lengths can be soldered to them to position the battery freely in the device's housing.

For which applications is this version with solder tags suitable?

This version is ideal for applications in which the battery is not mounted directly on a circuit board. It is often used to replace older batteries with soldered cables in industrial controls or in devices that require a flexible, wired connection to the power source.

How should the LS26500 LF-U be disposed of correctly?

As a lithium battery, it is subject to special disposal regulations. It must be taken to the relevant municipal collection centres or specialist retailers. Disposal in household waste is not permitted.