When we see a portable power bank, the first thing we see is its shell, a qualified power bank shell, in addition to the aesthetics and design sense, two factors must be considered, the first resistance Flammability, the second anti-fall property.

   1. Flame retardant

    Flame retardant refers to the explosion or combustion accident caused by the short circuit of the mobile power cell circuit or mechanical action. The shell of the mobile power supply can be extinguished autonomously after being ignited, which can prevent the short circuit of the cell from further expanding. Therefore, in general, mobile power sources are easy to catch fire or explode, but if its shell is more flame-retardant, the factors that cause explosion or fire will be reduced, and its flame retardant is poor, and even some low-quality mobile power sources As long as you can ignite it with a lighter, this kind of shell is unqualified. In recent years, the national mobile power industry standards clearly stipulate that the shell of the mobile power supply must have a certain degree of flame retardant. When the battery core or other components of the mobile power supply get out of control, the shell can effectively prevent or alleviate the fire. Spread, try to avoid causing more serious injuries.

    2. Fall resistance

     Fall resistance refers to the ability of the mobile power supply to withstand the impact of gravity. According to the latest regulations, the internal battery of a mobile power product is subject to a weight of 9.1 kg, falling from 610 mm, and after hitting the surface of the battery, the interior still does not catch fire, and it is a qualified mobile power cell if it does not explode. However, in order to reduce the cost of most mobile power sources, the use of low-priced housings causes such mobile power sources to have no flame retardant and no drop resistance. Once dropped or hit by gravity, there will be danger.

    So when buying, be sure to confirm the material of the mobile power shell, in addition to the workmanship and beauty. The choice of shell material is also very important, because the shell is a guarantee for the inner safety of the mobile power supply.