power bank is our travel essential an electronic device, at the time of travel and go out to charge their phone, really is too convenient, but all kinds of various shape parameters, let us in the choose and buy when dazzling, so how to choose a good power bank supply, is also filled with many tricks.

    1. Select capacity according to demand

    A lot of people in the choice of power bank, to see is its capacity. In different scenarios, the demand for capacity is not the same. For example, office workers who are often out and use mobile phones more frequently will choose large-capacity power bank, such as 20,000mA, when choosing power bank. For people with lower frequency of use, most of them will first choose the power bank supply of 5000 mA when they choose the power bank supply. Because it's only used in an emergency.

    2. Two-way charging

    Two-way charging, this feature is still relatively new to many consumers. The so-called two-way charging, is in the power bank input when the power can also be output. Therefore, when charging, the mobile phone can be charged through this carrier. This can not only solve the problem of not having a matching phone plug, but also can greatly shorten the time of charging the existing power bank supply.

    3. Whether it has quick charging function

    Quick charging is important for frequent travelers. Because during the journey, most of the mobile phones are out of power in emergency situations, which leads to the need for quick charging service. So at this time the fast charging function of the power bank supply has played a great role.

    For traveling out of such a use environment, choose a large capacity power bank supply, but also have fast charging function and two-way charging function, which is the most suitable for this type of consumer power bank supply, so choose power bank supply, must be based on their own use scene to choose.