Non-rechargeable Lithium Thionyl Chloride (also known as ER or Li/SOCl2) cell or battery packs provide reliable DC power that is long-lasting due to long shelf-life and high energy density. li socl2 battery are ideal for such long-term applications as power for electronic devices and electric power, water, and gas meters, and especially as a backup power source for memory ICs.
Below, let’s see lithium thionyl chloride discharge curve:
Discharge time vs Voltage
Li SOCl₂ batteries deliver a constant voltage of 3.6 volts until almost complete discharge
Voltage vs Temperature
See more about lithium thionyl chloride battery advantages and disadvantages.