... price 4>CE FCC PSE RO 12000mAh power bank external battery for iPhone iPad mobile phones (PB029) Product Features: 1 ... 5V, output voltage range for DC 4.6V-5.5V, can use desktop computer. Laptop computer via USB or ... , 3 a green light all the light, electricity for 80%-100%; 2 all the bright green light, ... is low, need to be in time for the mobile power battery. 4. The life of charging mobile power ...