Heloideo 10000mAh Portable Charger Power Bank External Battery Pack with Micro Type-c Cables for Cellphone?Black?

TO CHARGE YOUR ELECTRONIC DEVICE Option 1 Your device will be charged by power bank automatically once connected with the built-in cable. If not, please press the power button to turn on the power bank Option 2 Connect the USB port to your own electronic device with charging cable that comes with your electronic device, then power bank will start charging, if not, please press the power button to turn on the power bank TO CHARGE POWER BANK Using Micro USB charging cable(included) Connect power bank to a USB AC adaptor or the USB port of a computer with a micro USB charging cable(Not included).The LED lights will illuminate and indicate what battery level is in the power bank. When all the LED lights are on and solid/none are flashing,the power bank is fully charged. CHECK THE BATTERY POWER LEVEL Make a quick press and release on the power button, the LED indicators light up for a few seconds then turn off automatically, each LED light represents approx twenty-five percent power of a full battery. NOTE: If you find it can not charge your phone, please press the button