Malfunction Indication and Protection
Over 10 second protection:
When the power button is pressed for 10 seconds, the output will shut
off and the OLED screen will display “Over 10s protection”
Low Power Alert:
When the voltage of the battery is lower than 3.3v before using the
device, or under 2.8v during use of the device, the OLED screen will
display ”Battery Low” and cannot function. Please recharge the battery
to reactivate.