Lithium thionyl chloride battery: Model: ER14250 Max. Dimension:Φ14.5?5.0 (mm) Weight: 10g Nominal Voltage: 3.6V End Voltage: 2.0V Nominal Capacity: 1100mAh (1mA) & 1200mAh (0.5mA) Max Continuous Operating Current: 40mA & 20mA Max Pulse Discharge Current: 75mA & 45mA Application: Utility Metering Automatic Meter Reading Medical Electronics Memory Backup Tracking Systems Earthquake Detectors Remote Monitoring Systems Scientific Instruments Radio Stations Digital Control Devices