... .100% brand new, durable protective design, used for protecting your phone and keeping them new appearance. ... charge.How to know the remain powerPress the button, LED lights will turn on to indicate the ... connector and USB cable.3. Keep pressing the button for 3 seconds, LED lights turn on, the charger ... to charge. 4. After charging, keep pressing the button for 3 seconds to turn off the charger,5. ...