... >CE FCC PSE RO 12000mAh power bank external battery for iPhone iPad mobile phones (PB029) Product Features: 1 ... power supply far DC 5V, output voltage range for DC 4.6V-5.5V, can use desktop computer ... , electricity is 60%-80%; 1 a green light, electricity for 40%-60%; Only a red light, electricity is 40%-10 ... of time, the instructions will light up one by one to power, when four green all the bright ...