This is a 1 cell lithium battery designed to work in Allen Bradley PLC-5/11, PLC-5/20, PLC-5/30, PLC-5/40, PLC-5/60 series programmable logic controllers and industrial computers. Low self discharge rate gives this cell a 10 year shelf life. Stable voltage and broad temperature range (-60 °C to +85 °C). High energy, high reliability 3.0 volt power source is an excellent choice for memory backup applications.