... protection from overtime, overheat, overcurrent, short-circuit3. Charge & discharge battery indicator function, easy to use4. Lighting and SOS function 5 ... from overtime, overheat, overcurrent, short-circuit3. Charge & discharge battery indicator function, easy to use4. Lighting and SOS function 5 ... as shown below: When charging, you press the power button, power light is on, and indicates the power 5. ...