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What type of cells is used for power bank ?

Mobile Power Pack (MPP), also called charging treasure, travel charger, etc., is a portable charger that integrates power supply and charging functions. It can charge mobile phones, tablet computers and other digital devices anytime, anywhere. Generally, lithium batteries (or dry batteries, less common) are used as power storage units, which are convenient and quick to use.

cells of power bank


Power bank cells are mainly divided into 18650 cells and polymer cells. The most common one on the market is 18650 lithium-ion batteries, with a market share of 70%.

At present, the technology of 18650 batteries is relatively mature, and its battery structure is stable, the specific capacity is high, the comprehensive performance is outstanding, and because of its small size, it can be used in many scopes. However, its safety is worse than that of polymer lithium batteries, and the number of cycles of the cells is low, about 300 times.

The main advantages of polymer batteries:

(1) The diversity of the exterior is made, and the product using the 18650 battery is thick and large, and the shape of the millennium is unchanged.

(2) Long service life. There is no problem with charging and discharging more than 500 times.

(3) It is safe to use and is mostly used in high-end products. The safety of polymer batteries is reflected in the absence of explosions, and only bulging, spontaneous combustion, etc. may occur.

(4) High capacity, under the same packaging volume (note, packaging volume), polymer batteries can store more power, so most of them are lighter and thinner, with good portability, directly improving the user's Use experience.

(5) The disadvantage is that the cost is high, and the polymer battery of the same capacity is at least 10% more expensive than the 18650 lithium ion battery.

Summary: The use of more secure, higher capacity polymer lithium batteries will benefit consumers, but such products are more expensive.

BENZO Energy / UFine Technology Co.,Ltd ( benzoenergy.com ) is  a  high-tech  enterprise specializing in Researching and manufacturing of polymer li-ion batteries.

Since its inception, the company has been serving the global mobile power / backup power / energy storage power users as its mission. After ten years of development, it has grown into the world's leading provider of customized lithium battery solutions and products.



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