With the popularity of smart phones, tablet PCs and other mobile internet terminal products, A mobile power source so called “Power Bank” become an important choice for users to solve the issue of battery short service time per charge. Power Bank plays as both power supply and charger in one set, which can charge or support standby power at any time for the phone and other digital devices. According to statistics, global mobile phone shipments reached 18.9 billion in 2014, an increase of 4.9% than in 2013. Among those, total production of mobile phone was 1.6 billion in China, accounted for 85% of global production. Also, the global mobile phone market will continue to increase of 3-5% in the next years. In particularly, smart phones have even faster growth, which accounted for more than 65% in 2014, already. With the popularity of smart phones and tablet PCs, Power Bank shows a huge market demand, and become one of the most important applications of lithium ion batteries, now. China is the major producer and exporter of Power Bank in the world, and China Power Bank market will reach about 15 billion Yuan. According to the analysis, the average annual growth rate of Power Bank is about 30% in the next five years. The major market growth will be in India, Indonesia and other countries, and the growth rate may exceed in China.
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