Hebei Baisiwei Import&Export Trade Co., LTD.
Many people who buy mobile power only to see the capacity to be enough, not too heavy and need to be carried easily. In fact, many people ignore other important details. If you don't know, just take a look at this purchase guide .
Whether it is short-distance or long-distance, the capacity requirements are also the same, because the capacity is proportional to the weight, Although the large capacity can charge the mobile phone more often, the heavier weight is inconvenient to carry and the longer time to charge the charger, which will bring trouble to the business trip and travel.
And the aircraft has requirements for the capacity and rated energy of mobile power supply, which cannot exceed 20000mAh; The rated energy of the charging battery should not exceed 100Wh, and no approval from the airline is required; If the rated energy exceeds 100Wh but does not exceed 160Wh, it can only be carried with the approval of the airline, but each passenger shall not carry more than two charging pads.
So in general, 10,000 mah is the most appropriate.
2. the specification of current output and input
This is also very important. For a 10000mAh mobile power supply, if the rated input is 5V/1A, it will take more than ten hours for the mobile power supply to be fully charged, while if the rated input is 5V/2A, it will only take about six hours, which is quite a big difference. Many people pay little attention to this point, and mobile power generally does not have smart current control like mobile phones. If the 2A charger that does not support smart matching current is used to charge 1A mobile power, mobile power will be damaged.
In addition, the current mobile Power Bank generally has two outlets, which can support the charging of two devices at the same time, most of which are 5V/1A and 5V/ 2.4a, which can basically meet the demand of charging A mobile phone + A tablet at the same time. However, another point needs to be noted is the total output specification of the mobile power supply. Although the mobile power supply launched by some merchants is also 5V/1A and 5V/ 2.4a, its total output is only 5V/ 2.4a. In this case, the two interfaces are used at the same time, and the charging speed will be much slower.
If two tablets need to be charged at the same time, at least two output ports should be above 5V/2A, and the maximum total output is 3.4a.
3.It is more convenient to choose a portable power supply with its own line
Nowadays, the power bank supply is dazzling and the competition is fierce. The merchants continue to tap the pain points of users to perfect their products. For example, for Apple users, some mobile power bank now have Lightning data cables, which can be used to reduce the number of data cables and the burden when you go out.
Special reminder, choose the mobile portable charger with Lightning data cable must be selected by Apple's official MFi certification, otherwise it will not only take a long time to prompt "unrecognized", it may also cause damage to the mobile phone battery, and use non-MFi certification The accessories, Apple is not guaranteed. The main brands of mobile power that have passed MFi certification are Belkin, Moss, Philips, Green Alliance, iWALK, MIPOW, etc.
The built-in android data cable is less fussy, as long as it's not inferior.
4, Support charge and discharge at the same time
I don't know if you have ever encountered this situation: you need to charge your power bank and mobile phone when you back to the hotel at night , but the outlet in the hotel is not enough, or the self-brought charging head is not enough.
If there is a mobile power supply that supports charging and discharging at the same time, this embarrassment can be solved. Only one socket and one charging head can be used to charge the mobile power and mobile phone at the same time, which can save resources and time.
However, at present, most of the mobile power supply does not support charging the mobile power supply while charging the mobile phone, the main problem is that doing so will make the circuit board high load, and produce too high temperature in a short time, thus affecting the performance and safety. If the nominal input value of the power bank is 5V/1A and the output value is 5V/ 2.1a, it is easy to form A phenomenon that the income cannot cover the expenses, and the internal parts of the power bank will be greatly damaged.
To support both charging and discharging, in addition to the input value is greater than or equal to the output value, the circuit board and safety protection requirements are relatively high.
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