One is to determine the conversion rate. One of the cores of power bank is the conversion rate. Usually, without professional testing equipment, it is impossible to test the conversion rate of the product by itself, and can only be understood through advertisements. The conversion rate of a general product is already high at 85%. If the nominal conversion rate can exceed 90%, it can basically be determined to be a false report.

    Second, the compatibility of purchased products should be diverse. Due to the difference in specific circuit design, it is impossible for the product to support charging for every electronic product. The specific method is to bring all your commonly used electronic products to the counter to test the machine, so that although it cannot guarantee how good its compatibility is, at least it will not let you buy things that you can’t charge yourself.

    The third is to pay attention to the characteristic functions of the product. There are many special functions, such as anti-reverse circuit design, which can protect the product from damage. The dual-interface design can guarantee the need for multiple electronic products at the same time. You can purchase products with different functions according to your preferences.

    The fourth is to determine the positioning of the products you buy. For example, if you are traveling for a long time and backpackers are traveling, you should consider buying large-capacity products. If you are going out to prevent your mobile phone from running out of power, a medium-capacity and compact product will be your first choice.

    Fifth, pay attention to the weight of the product. We often have this kind of experience. Things that are not very heavy will feel unusually heavy after holding them for a long time. The same is true for power bank supplies weighing 100g-200g. It is a good choice to choose a lighter weight product in the same capacity.

    Sixth, If the price is right, try to choose a well-known brand. It takes a certain period of advertising and word-of-mouth to build a well-known brand. If you are really lazy and don't want to buy too much trouble, a branded power bank may be what you want.