The SL-500 series is specially designed for high temperature applications; the maximum operating temperature for cells in this series is +130°C as apposed to +85°C for the other Lithium Thionyl Chloride cells in this range. The capacity of these cells is slightly reduced over those in the SL-300 range but apart from that they have similar characteristics to those cells.
SL-500 cells have an extremely low self-discharge rate of less than 1% per year, suited for long-term use with low drain current. They can also exhibit Intermittent discharge with medium current level provided the average is not below the active current level.
