Only a few people know when the first external battery appears. Mobile Power first appeared in 2011 CES (the Consumer Electronics Show). CES is held annually in the United States, which is the world's largest trade fair of consumer technology products. You can find any types external battery there, such as 20000mah external battery , external battery 10000mah.
In an obscure corner, a student used a few AA batteries and then pieced together with a mobile power control circuit to give the presentation of charging for digital products. At that time the "external battery" even did not have a shape. That is a circuit board, a few USB and a few batteries. You can see clearly inside. Today's external battery is colorful and attractive. Even one such an obscure corner, some people discovered it and then many people follow it. Finally the businesses of external battery were a great success.
External battery is a new charge which has power supply and charging functions. Digital equipments can be charged or standby or power whenever and wherever they want. Generally speaking, it is made by lithium batteries or a dry battery, and it is also called portable power.
http://www.external-battery.net established in 2005, is the subsidiary company of Global Vision Group (HK) limited. It is a professional and famous power bank manufacturer and exporter in China. With its professional R&D center, factory and marketing team, we devoted ourselves to offering customer with innovative 3C products. In 2010, the smart phone and tablet (Iphone, Ipod, Ipad, Sumsung, Motorola, blackberry, Nokia...) developed tremendously.