How to select a power bank?


Nowadays, smart phones have more and more functions, and smartphones can almost completely replace PCs. People are increasingly dependent on smartphones. Therefore, when people buy mobile phones, battery capacity and battery life have become the focus of attention. However, even if the largest capacity battery may not meet the needs of some special people, mobile power comes into being. Most boys may choose large capacity and affordable power bank, while girls are more inclined to choose cute power bank, so how to choose a good mobile power?

1. Security
Safety is paramount at all times. Some inferior charging treasures will not only consume the life of the mobile phone, but may even explode, which is very dangerous for the user. But in general, choosing a well-known brand, mobile power with moderate price will not have these problems. You can also focus on the safe design of mobile power. For example, the HUNDA Intelligent Identification Smart IC 5-Port USB Charger has a built-in smart IC that automatically distributes current. The smart identification charger features overheat, overcurrent and overcharge protection to protect your phone. When the battery is fully charged, charging will stop automatically, ensuring safety first. Metal casings have superior fire resistance than plastic casings, although many brands of plastic housings have a certain degree of flame retardancy, but they are still inferior to metal casings.
In general, we all like large-capacity mobile power, but the capacity and weight are directly proportional. Although the capacity is large, the phone can be charged a few times, but the weight is heavier, not portable, and the charging time is more charged. For a long time, this will cause trouble for business travel and travel.
In the case of infrequent use, the Powerbank should maintain about 80% of the power. Without power or low power, it can’t be idle for too long. The mobile power supply cannot be placed where the temperature is too high or too low. It is very dangerous to use your phone while charging.

HUNDA Intelligent Identification Smart IC 5-Port USB Charger Adapter 2.4A Power Supply for Apple Samsung Smartphone

In addition, airlines have requirements for mobile power capacity and rated energy, which cannot exceed 20,000 mAh; charging treasures do not exceed 100 Wh. Therefore, you should choose a charging treasure based on portability. The weight and volume of the mobile power supply with a capacity of 5000-10000 mAh is convenient for carrying. The MEIZU Minions M20 mobile power has a cute and compact body that is lightweight and portable, so you can take it with you. 10000mAh large battery, wired for your mobile phone, no need to worry about power off. 24 W fast charging, providing you with two-way charging speed to meet your charging needs, convenient and fast.

MEIZU Minions M20 Power Bank 10000mAh 24W Flash Quick Charge External Battery for iPhone X iPhone 8 Samsung Galaxy S8 Note 8

3. Battery: the heart of the battery
At present, there are only two types of mobile power batteries, one is a common lithium battery, and the other is a polymer battery. There is a big difference between the two in terms of material composition and shape. However, most ordinary users do not understand the difference between them.
Ordinary lithium battery cells have the advantages of light weight, large capacity, no memory effect, low price, etc. Many digital devices now use lithium ion batteries as power sources. Lithium-ion batteries have a high energy density, and their capacity is 1.5 to 2 times that of nickel-hydrogen batteries of the same weight, and has a very low self-discharge rate.
In addition, lithium-ion batteries have almost no “memory effect” and do not contain toxic substances, but their disadvantages are large size, heavy weight, short service life and the possibility of explosion, which is a very fatal disadvantage.
Polymer batteries are different according to the electrolyte materials used in lithium-ion batteries. Lithium-ion batteries can be divided into liquid lithium-ion batteries. The main difference is that the electrolytes are different. Liquid lithium-ion batteries use liquid electrolytes, while polymer lithium-ion batteries use Instead of a solid polymer electrolyte, the polymer can be either “dry” or “colloidal”, and most of the current polymers are polymer colloidal electrolytes.
Compared with liquid lithium batteries (Li-ion), polymer lithium-ion batteries have many advantages such as high energy density, smaller size, ultra-thinness, lighter weight, high safety and low cost. The average lithium polymer battery is not very large, the thinnest can be 0.5 mm, and can be customized according to the different capacities, but still maintain the characteristics of the lithium battery, that is, the memory effect is small.

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