Primary Lithium Manganeses Dioxide Battery Type CP9V has the advantages of high energy density, high open circuit voltage, wide range of operating temperature, stable operating voltage and current (over 90% of the total capacity is discharged at a high plateau voltage), long operating time (over 8 years) for continuous low current discharge with medium current pulse and low self-discharge rate (less than 1% per year). Its main applications are: Smoke detector, Memory Backup, Professional electronics, Measuring instrument.