Can only choose one of capacity and safety? Portable power bank is a patchwork product without technical content? No.

    After portable power bank has caught up with the development of smart phones and quickly joined the population of people's standing digital products, the following theory of low service life, high risk, and explosion of portable power bank has brought a lot of impact to this emerging industry. Of course, this is not groundless. Portable power bank with various safety hazards are circulating in the market, and most of these safety hazards are related to unqualified circuit boards and battery cell quality problems.

    Regarding the issue of battery cells, many people always speak of capacity as heroes. However, under the premise that the portable power bank market environment is complex and a unified standard has not yet been established, although the capacity is very important, the quality and safety of the battery are more critical. At present, mobile power batteries generally use 18650 lithium ion batteries and lithium polymer batteries. It is best to choose polymer batteries, which are safer and have a relatively long life. At present, the professional Protoss with polymer battery cell power bank ranks high. All models are polymer batteries with a query number, and the capacity of the same volume is 15% higher than that of ordinary polymers, and there is no safety problem.

    Today we will focus on the circuit protection of the portable power bank.

    Although the circuit board is embedded in the portable power bank and the specific structure cannot be directly seen, the circuit board is the part of the "brain" that controls the safety attributes of the portable power bank. It is related to the user experience and safety attributes, and should not be careless.

    Many people have reported that after using a mobile power bank to charge the phone, the phone has problems with slow response, disordered touch and even a black screen. This is because some low-quality mobile power supplies use simple circuit boards, and the unstable discharge leads to excessive current "burning" the mobile phone. And some brands of mobile power circuit boards are relatively sophisticated, with multiple protection functions, and the risk factor is zero if used reasonably.