There are generally on the market, metal, plastic, wood, cloth material.
Metal and plastic are the most, and the texture and feel of metal are better than plastic.
As for wood and cloth, it depends on personal preference.
Several principles for choosing a power bank
1. Choose mainstream brands
Under the premise of sufficient budget, the first choice is millet, purple rice, Anker, Huawei, Samsung, followed by the choice of well-known parts factory green link, Rome Shi, Bysi, Yubo, etc., do not choose the third-line small brand.
2, choose the right capacity
Do not look at what complex on-board conversion rate, rated capacity, just remember that 10,000 MA can probably charge the mobile phone 6000,20000 charge 12000, and then choose according to your own needs
3. The lighter and more portable, the better
The same capacity of the charging bank, the smaller, the thinner the thickness, the lighter the weight, the better.
4, it is best to have fast charge
The capacity of mobile phones and charging banks is getting larger and larger, and the charging speed is too slow without fast charging.
Secondly, fast charging depends on whether the fast charging protocol of the charging treasure matches the fast charging protocol supported by the mobile phone.
Plastic shell, low cost,
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Metal-clad, delicate,
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The battery has 18650 steel shell lithium battery, large capacity, large weight, but the quality of the battery is uneven, and the volume of the charging bank using this battery is too large.
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Many now use polymer lithium-ion battery holder charging bank cell, this cell is safe to use, and can be made very thin, is currently the most common cell.
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In addition, it is best to buy brand charging treasure, there are many miscellaneous brands on the market. A very small charging treasure dares to write 10,000 or even tens of thousands of mAh, too terrible, and the product quality of the cottage factory is not guaranteed, and a single short circuit has the danger of causing fire
Whether the durability of the charging treasure depends on the quality of the battery, and of course, the surgery is better than the metal or alloy