STS - Model SMF4 - Portable Fluorimeter Operating Guide V.2.03 - User Manual

When the instrument is first powered on the battery icon is displayed, the home screen will then appear and the battery charge status may show almost empty. The instrument will then make an assessment of the battery charge remaining and display the actual charge status after a couple of minutes. When the charger is connect the home screen will display CHARGING, when the battery is fully charged the instrument will turn itself off. Please note that with the charger connected you cannot turn off the instrument until unplugged.