Nowadays, there are various types of mobile power banks on the market, with various advertisements and promotions overwhelming. As a consumer, do you know how to choose a mobile power bank? Here are 4 common knowledge about portable power banks to avoid making some small mistakes.
\t1、 Polymer cells are not necessarily safer than 18650 cells
Although polymer battery cells theoretically have higher safety, due to the paste like lithium ions inside the cells and the use of aluminum-plastic film packaging on the outside, the texture is soft, prone to deformation, and not resistant to collisions. Therefore, the technical difficulty is high and the production requirements for manufacturers are high. At present, there are few manufacturers in China that can produce high-quality polymer battery cells, and the overvoltage protection used by different manufacturers varies greatly. Therefore, in the current domestic market, polymer battery cells may not necessarily be safer than 18650 battery cells.
\t2、 The larger the capacity of the power bank, the better
We should know that the capacity and volume of a portable power bank are directly proportional, and the larger the capacity, the larger the volume. Therefore, when making a purchase, it is important to consider one's own needs. If you do not frequently travel, there is no need to bring a piece with you; Brick” Running everywhere.
\t3、 The price of mobile power banks is only a reference standard
Generally speaking, the production cost of mobile power supplies using 18650 battery cells is lower than that of mobile power supplies using polymer battery cells. And for the corresponding price range, taking 10000mAH as an example, the price of mobile power supplies with 18650 cells is usually between 200 and 250 yuan, while the price of mobile power supplies with polymer cells is usually between 350 and 400 yuan.
In short, to evaluate the quality of a mobile power bank, it is necessary to comprehensively consider several aspects such as charging performance, durability, safety, conversion efficiency, and appearance. Price is only one of the reference standards and cannot completely determine the quality.
\t4、 Mobile power bank will not cause damage to mobile phones and tablets
There are two criteria for measuring whether it will cause damage: the voltage limit and the voltage stability. If a portable power supply can provide a stable and appropriate voltage, it is safe. However, it is not ruled out that various inferior manufacturers may produce power supplies with unstable voltage and inappropriate limits.