Lithium-thionyl chloride battery has the characteristics of high specific energy, steady discharge coltage, long storage life, convenient maintenance and operation. The battery can operate normally within the te,perature of -30-+70.With the flexible design of the capacity, the battery can be assembled at the user's rsquests. The battery is suitable gor use in instruments and digital gauges based on large-scale integrated circuit and the aviation and space flight fields.