... 3. When the connection is OK, the red LED light on the power bank will turn on, means ... ...5. When the device is fully charged, the LED light will turn green. Disconnect it with the powerbank ... pressing the button for 3 seconds, and the LED lights will turn off. Solar battery charger for iphoneCaution ... ,LED will turn on,and the LED will turn off when it is full charged. mobile solar charger,emergency ...