Description

Tadiran XOL Series Lithium Thionyl Chloride Battery

Tadiran XOL Series Lithium Thionyl Chloride Battery is the most energetic and reliable battery in the world: delivering unrivaled energy density, high capacity, and high pulse capability to power increasingly sophisticated technologies.

Tadiran standard cells and custom battery packs are certified lead-free RoHS, WEEE EC, and REACH compliant. Tadiran batteries also feature an annual self-discharge rate of less than 1% per year, able to power certain low current draw applications for up to 40 years under the most challenging environmental conditions. As a result, Tadiran LiSOCL2 cells are the PROVEN choice for use in remote locations and challenging environments.

Ultra-long-life with low pulses Batteries PROVEN to deliver up to 40-year battery life for low-power devices Tadiran XOL Series lithium thionyl chloride (LiSOCl2) batteries are ideal for low-power applications that must operate for extended periods of up to 40 years without requiring high pulses. XOL Series batteries deliver extremely high voltage (3.6 V) and high energy density (730 Wh/Kg) to support product miniaturization. These long-life cells feature very low annual self-discharge of just 0.7% per year, the result of superior raw materials and proprietary construction to harness the passivation effect.

These ruggedized cells feature the widest temperature range (-80°C to 125°C) to perform reliably under extreme environmental conditions, along with a hermetically sealed can to deliver superior leak prevention vs. crimped seals.

Technical Overview & Operation

The Tadiran XOL Series Lithium Thionyl Chloride Battery relies on a metallic lithium anode combined with a liquid thionyl chloride  cathode and carbon current collector in a hermetically sealed bobbin construction.

The cell’s exceptional shelf life and minimal self-discharge are driven by the formation of a microscopic lithium chloride passivation layer on the lithium anode during storage. This passivation film virtually stops self-discharge reactions when the battery is idle, preserving chemical energy over operating lifetimes exceeding 20 years. When a current load is applied, the passivation layer breaks down, establishing a flat, stable operating open-circuit potential of $3.6 \ \text{V}$. The hermetic glass-to-metal end seal prevents electrolyte leakage and gas escape, making it ideal for severe outdoor and industrial deployments.