Along with the shape of the power bank on the market, the growing demand for power bank, demand is becoming more and more high, but there has been a problem in power bank, is relatively short of storage and use fixed number of year, cause now many enterprise priority to the development of large capacity power bank, but in expanding capacity at the same time, The volume of power bank is also increasing, resulting in the acceptance of large capacity power bank by the public far less than the volume of mini power bank.

    When the power bank first appeared, the public regarded it as convenient and delicate. Therefore, when the power bank with large capacity and volume of 20000 mA appeared, the public accepted it highly. However, after a period of use, the public used less and less frequently for the power bank of 20000 mA. Because the volume is too large, people have less and less choice for this type of power bank. We make an analysis on this problem:

    1. The volume is too large and is not easy to store

    The problem of large size of the 20,000mA power bank has always been a problem that has not been solved. This type of power bank cannot be reduced in size, mainly because the volume of the internal battery is too large, so the total volume of the power bank cannot be reduced. The weight of the 20,000mA power bank is too large, so it is very heavy and difficult to store when it is put in the bag. As a result, the public will not choose to carry a 20,000mA portable power source when they go out.

    2. Shorter service life and lack of late maintenance

    Although the power bank of 20000mA can accommodate more power, but the service life is short, because the number of internal batteries is too much, the distance between the battery and the battery is small, very easy to generate heat, so it will greatly shorten the service life, while the lack of post-maintenance, as long as there is damage, the whole power bank will be scrapped.