Lithium Thionyl Chloride (LiSOCL2) Battery Selection Considerations

Other Conderations

Here are many other factors to consider when selecting a Li-SOCl2 battery. Some additional considerations include:

Discharge rate: Li-SOCl2 batteries have a low self-discharge rate, but their performance may be affected by the rate at which they are discharged. Consider the expected discharge rate of your device and the rate at which the battery will be used to ensure that you choose a battery with the appropriate discharge rate for your application.

Compatibility: Li-SOCl2 batteries are compatible with many different types of electronic devices, but it is always important to ensure that the battery is compatible with your specific device. Consult the manufacturer's specifications for your device to ensure that you choose a battery that is compatible with your application.

Safety: Li-SOCl2 batteries are generally considered to be safe to use, but it is always important to handle and use them properly to prevent potential accidents or injuries. Follow the manufacturer's instructions for handling and using the battery, and never attempt to disassemble or modify the battery in any way.

Cost: Li-SOCl2 batteries are a cost-effective power source, but the cost can vary depending on factors such as size, capacity, and voltage. Consider the total cost of ownership, including the initial purchase price and the expected lifespan of the battery, to ensure that you choose a cost-effective option for your application.

Quality and Compliance: when purchasing in bulk, manufacturing quality is paramount. Ensure your supplier holds UL1642 (safety), UN38.3 (transport), and IEC62133 certifications.

Solving the Passivation and Voltage Delay Challenge

A unique characteristic of li socl2 chemistry is the formation of a passivation layer—a thin film of lithium chloride (LiCl) that develops on the anode. While this layer is responsible for the battery's incredible 10+ year shelf life by preventing self-discharge, it can cause a "voltage delay" when the battery is first activated after long storage.

Professional Solution: For high-pulse applications, PKCELL recommends a Hybrid Solution—pairing a Bobbin-type LiSOCL2 battery with a Hybrid Pulse Capacitor (HPC). The battery provides the long-term energy, while the capacitor handles the high-current surges needed for data transmission, effectively bypassing the passivation issue.

Applications & Popular Models: Where LiSOCL2 Excels

Choosing the right model depends on the specific energy budget of your device. Below are the most popular 3.6 v li socl2 models used in the industry today:

• ER14250 (1/2AA, 1200mAh): Compact and reliable. Widely used in wireless alarm sensors, CNC machine memory backup, and TPMS (Tire Pressure Monitoring Systems).

• ER14505 (AA, 2400-2700mAh): The industry standard for smart water and gas meters. It balances size and energy capacity for residential utility monitoring.

• ER26500 (C, 8500-9000mAh): Preferred for industrial data loggers and marine equipment where larger capacity is required for multi-year deployments.

• ER34615 (D, 19000mAh): The powerhouse of the family. Essential for GPS fleet tracking, remote oil drilling sensors, and high-capacity smart city infrastructure.