How to choose a power bank? How to choose a power bank

1. Appearance. A stylish look can add a lot of fun. The higher the content of the same volume, the small shape can highlight the portability of the power bank and increase the practicality. My favorite is the LVSUN brand power bank, which has a delicate and fashionable appearance, small and portable.

2. Parameters. Different brands of power banks have different parameters:

1.Charging voltage and current: The charging voltage is generally required to be 5V, and the mobile phone adapter can be used universally. The theory of charging current is that the bigger the better, and the faster the charge. The maximum current of the LVSUN brand mobile power bank I am using now is 2A, and I can intelligently choose the best charging current.

2.Cell capacity: Generally, the cell capacity is proportional to the volume, and the larger the volume, the larger the capacity. Try to choose products with large capacity under the same volume.

3.Output voltage, output current: The output voltage must be 5VThe output current should ideally be up to 2A.

4.Protection parameters. It should have protection measures such as over-voltage, over-current, under-voltage, etc.

3. Functions. Good functionality and user-friendly design. In addition to some basic functions, it is best to have the following functions in the power bank:

1.Automatic identification function: This product can be automatically charged without the need for a switch without a switch in the charging or standby state, and can be automatically charged by directly connecting to the portable product, reducing cumbersome operations.

2.The indication of the battery cell level can tell us what the current power of the power bank is and whether it needs to be charged, which is more important in daily use.

3.High compatibility and strong practicality: It can provide charging for a variety of digital products, such as iPhone, iPad and multi-brand digital products, and the products with strong versatility.

4.Intelligent charging mode, synchronous charging and discharging function. The power bank can also be charged at the same time as the device, saving time.

5.Another important thing is the battery repair function. Abbreviated as "Battery Doctor". The LVSUN brand power bank I am currently using has an automatic repair function. It is possible to repair not only the battery of the mobile point power supply itself, but also the battery of the charged device.

See whether polymer batteries are used and whether the conversion rate is higher than 80%.

The purchase method of the mobile power supply is as follows:

Choose the mobile power supply of large manufacturers, most of the mobile power brands on the ** are small factory foundry, large manufacturers have their own production lines, and there is quality control on the production line. Although it cannot completely guarantee that the mobile power supply will not have an accident, it greatly reduces the possibility of an accident. Large manufacturers have their own molds, which has a problem of public models concealing private models, and the public model is a set of fixed mobile power molds that many manufacturers are using.

Large manufacturers all use their own private models and have their own design teams.

After-sales is guaranteed, and there is no perfect thing in the world. No matter how good the design and craftsmanship are, accidents will inevitably occur. Many buyers' mobile power supplies are burned, and the cost of rights protection is also very high, so it is generally not done.

But big manufacturers will not do this, and they will generally try to solve problems when they find them, and the impact of word-of-mouth is very important. The after-sales point and after-sales service of large companies are also much better than that of pure online mobile power supply providers.

The core technology of mobile power supply:

The core technology of the mobile power supply lies in whether the curve of the discharge current and voltage when charging the mobile phone is smooth, which is closely related to whether the stove will damage the important technical indicators of the charging equipment. For mobile power supply, it has a certain emergency function, in the case of many digital power supplies can not be stored in the empty situation, can be supplied through some devices, so that digital products can achieve the effect of normal operation.

The manufacturability of the mobile power supply refers to the appearance design of the product to participate in the consumer's public or niche aesthetics, as an electronic product that can be carried around and has a certain function. Consumers pay great attention to the aesthetics of its appearance, so mainstream manufacturers are not only increasing the innovation of battery power management technology, but also increasing the research and development of product appearance that meets the aesthetics of consumers.

With the increasing popularity of digital products such as smartphones, battery life has become a demand for most people! The emergence of mobile power supply provides long-term battery life for mobile phones and tablets, and has become a must-have digital technology product during business trips and travel.

However, is it sometimes that the power of the power bank is used up relatively quickly, or the battery life of the power bank does not meet personal needs. This is related to the battery used inside the power bank.

Generally speaking, there are two types of batteries used in power banks, one is a lithium-ion battery, and the other is a lithium-polymer battery.

1.Lithium-ion batteries are characterized by light weight, easy to carry, and use the transfer of lithium ions to complete charging and discharging, generally using mixed lithium metal oxides as electrodes. It can be recharged, and many mobile phones and computers have batteries, which are generally lithium-ion batteries.

This kind of battery should be kept away from heat sources, avoid direct sunlight, and properly charged, which can greatly improve the durability of the battery.

2.Lithium-polymer batteries are characterized by high energy density, ultra-thinning, and the material inside itself is solid, or colloidal solid, and will not leak liquid in the case of battery damage. Moreover, it is very moldable and can adapt to different design needs.

Under the same circumstances, the performance of lithium-polymer batteries is 10% higher than that of lithium-ion batteries, but the relative production cost is also higher.

Of course, green vegetables and radish, each has their own love, everyone has their own preferences, will choose their favorite power bank, but after reading this, you should know how to choose the right one for yourself, many people in the choice of power bank, generally may look at the head first, after all, the size of the grinding hole is too big, because it is heavier, it is inconvenient to go out to carry, especially for girls, it can be practical, charge the mobile phone a few times, you can. Therefore, when choosing to buy a power bank, you should choose the right one according to your specific needs, consider practicality, portability, effective capacity, and appearance and other factors, combine your own rigid needs, find a good focus, so as to choose your own satisfactory power bank to meet your specific needs!

Generally speaking, a good power bank can look at three aspects:

1. Cell: At present, there are two kinds of battery cells in the mobile power supply on the market, one is the polymerization of the cell, this cell is also the best cell on the market, generally speaking, the thinner mobile power supply is used in this kind of cell, of course, it is also higher than other mobile power supply of the same capacity The second cell is the 18650 cylindrical cell, which is relatively thick in the mobile power supply, and the product life is also lower The service life of the polymerization is longer than that of the 18650 cylindrical cell, and the conversion rate of electrical energy is also higher!

2. Capacity: Of course, the higher the capacity of the mobile power supply, the better, of course, there is no lack of virtual standard mobile power supply on the market, which itself does not have such a high capacity, and the manufacturer will mark the capacity very high in order to sell well, which can be compared with each other when buying the mobile power supply

3. Other configurations: Generally speaking, there will be data cables and other configurations in the mobile power supply, and the configuration is relatively good, not only there are several data cables of different models of mobile phones, but also chargers for charging the mobile bank!!

The quality of the power bank, which is really difficult to evaluate, look at the battery cells, circuit boards, protection circuits and so on. We generally don't buy the power supply back, and then dismantle it to study what it is, whether it is a good brand or not, and we are not willing to do it, after all, it is a new one that is bought with money. Therefore, we generally look at the power capacity, whether the price is appropriate; The higher the capacitance, the better, depending on the actual need.

Some time ago, I bought a CLN fashion power bank in the official **, 5000 mAh, I heard of it before, and many netizens recommended it, which is pretty good. Hope it helps!

The statement of mobile power supply is also the same, and what consumers need is more of a kind of peace of mind to buy and use; Therefore, when consumers pursue brands, they may wish to choose a good product from the following points:

Comparison of products: you get what you pay for, but everything is not absolute;

If it is a relatively expensive one, you can consult the merchant: the intention is to hear how far the merchant's statement is from your own understanding;

One thing that is particularly important in today's e-shopping era is consumer evaluation; We can extract the information we need from it, so as to better choose a product that suits us;

The following is my personal opinion: in the era of smart phones going to glory, mobile power banks are also gradually born; In the e-purchase data information display; Juda brand sales are leading;

Secondly, understand the composition of the mobile power supply: the selection of good raw materials is essential, but the combination of packaging technology can not be ignored: for the raw materials used in the mobile power supply, different brands use different raw materials:

Sanyo's battery cells, Desay's battery cells; As for packaging and combination technology: large has a good reputation;

j Power bank is actually quite a lot, and some leaderboards have been collected.

Hope it works for you.

Screen size: 14 inches 1366x768

CPU model: Intel Core i5 3317UCPU frequency:

Memory capacity: 4GB DDR3

Hard disk capacity: 500GB 5400 rpm.

Graphics chip: NVIDIA GeForce GT 620M Operating system: Windows 7 Home Basic 64bit (64...

Camera: Integrated 1.3 million pixel camera.

Optical Drive Type: *** Recorder Support*** SuperMulti....

Wireless network card: supports wireless protocol.

Laptop Weight:

Bluetooth: Yes, Bluetooth module i

Pay attention to power and output, which is the main thing to do, and then there is after-sales maintenance.

First, choose a well-known brand. No matter what your needs are, choosing a well-known brand of power bank is the first step to enjoying the protection for yourself. It is recommended to buy domestic brands such as Pinsheng, Konka, Yubo, Dianxiaoer, etc.

Secondly, there are many specifications of mobile power supply, so it is most appropriate to choose a product with a capacity of 5000mAh. "Power banks with a capacity of 3000mAh and below can often only charge the phone once, so it is better to have an extra battery. The volume of the mobile power supply is often changed by the size of the capacity, and the products with a capacity of more than 5000mAh are relatively heavy, and they are very wasteful if they are not used.

The most important thing is that as far as the current mobile power supply technology is concerned, those power supplies with tens of thousands of capacities, the quality is not guaranteed, it is like a time bomb. ”

Next, to buy a power bank, you need to understand the power conversion rate, simply put, the capacity in the power bank can not be 100% transferred to the mobile phone, but as long as the power supply is lower than 70% conversion rate, it means that the battery cell loss is large.

Finally, it is necessary to choose a general-purpose product, because the general-purpose mobile power bank generally has more than 4 adapters, which is suitable for charging any model. If you need to charge a tablet or laptop, you need to choose a power bank with a current of 2A. It is worth mentioning that you should go to regular stores, specialty stores, and regular ** to buy mobile power supplies.

Let's take a look at the voltage and current first, which will generally be 5V. There are also some tablets that have a bit more current.

At this time, if you charge the tablet with a small flow power bank, the speed will be very slow.

Lizhong's dual-power power bank has and dual output. Basically, it can meet the needs of most people.