Patients with heavy use of mobile phones are always worried that the power of the mobile phone is not enough, so the charging treasure is a must-have item every time I go out. So, when choosing a charging treasure, the more the battery capacity of the charging treasure, the better?
Is the capacity of the rechargeable battery really bigger?
If you travel frequently or need to travel long distances, or you cannot find a fixed charging place in a short period of time, naturally a mobile power bank with a larger battery capacity can meet your mobile phone charging needs. However, the battery capacity of the charging treasure is directly proportional to its weight. For example, a certain 20,000mAh mobile power supply that Qizhenjun entered at the beginning (a certain masher is making money!), Its weight is as high as 445 grams, which is close to 1 kilogram. Weight, this charging treasure can be used as a dumbbell and brick in addition to being used for charging. Fitness self-defense is grasped with both hands. Therefore, if you only meet your charging needs in a short time, then a larger-capacity mobile power supply becomes us The burden when going out.


Judging from the currently popular mobile power supplies on Taobao, the weight of the ordinary 10000mAh mobile power supply is between 220g and 250g, which is equivalent to bringing an extra mobile phone. The weight of the mobile power supply is between 350g and 400g, and the more terrifying 30000mAh mobile power supply easily breaks through the 600g mark. A 691-page Xinhua dictionary is 500g, so if you bring a 30000mAh power bank, it is equivalent to bringing an additional Xinhua dictionary.
For a larger-capacity power bank, if you want to charge it, it will take more time. A Morse claimed to use the IC technology solution of fast charging, but the input power of 5V / 2.1A is only 10W, which is far from enough.
Officials claim that it takes at least 13 hours to charge a capacity of 20,000mAh, and if you want to use a 10W input power to charge a 30,000mAh power bank, it will take almost a whole day. In addition, if you want to buy a charging head that is suitable for a certain company, you need to add money!
Therefore, it is recommended that if you want to buy a large-capacity mobile power supply, it is best to ask the customer service if you support the "two-way fast charge" function before buying. The current Qianyuan machines are suitable for 9V / 2A input power up to 18W It's fast charging, at least it's more fragrant than 10W, and you don't need to add money to buy a suitable charging head.




If you travel frequently, you should also consider the restrictions imposed by civil aviation on passengers carrying mobile power: the charging treasure must be carried by the passenger for personal use and cannot exceed 2, and it is strictly prohibited to carry it in checked baggage. , The rated energy exceeds 100Wh but does not exceed 160Wh, it can only be carried after approval by the airline. It is strictly forbidden to carry the charging treasure with the rated energy exceeding 160Wh.
Domestic purchased mobile power supply generally has a built-in lithium battery voltage of 3.8V, so the energy of the 10000mAh model is 38Wh, 20000mAh and 30000mAh correspond to 76Wh and 114Wh respectively. Therefore, the 30000mAh power bank is beyond the portable range and cannot be boarded. If you need to carry it, you need to go to the airline counter to declare it before security and fill out a transportation application form.

Therefore, only the nominal 60% of the actual 5000mAh power bank can be charged to the mobile phone, that is, the actual output of 3000mAh, and the 10000mAh, 20000mAh and 30000mAh can only output 6000mAh, 12000mAh and 18000mAh according to the above conversion.

In 2019, the battery capacity of ordinary smartphones is generally around 4000mAh, so a 5000mAh mobile power supply may not be able to charge your phone once, and the 10000mAh model can be recharged 1.5 times, which can meet the needs of charging for a full day of going out. , So the more the battery capacity of the power bank, the better? After reading the above introduction, you may know that it is best to buy a charging treasure that suits your purpose.
Don't touch this kind of charging treasure!
When writing the above content, I found that the current charging treasure is already very cheap, and the first-line brand 20000mAh also supports fast charging mobile power supply from about 89 yuan. However, I also found that there is a 20,000mAh thin and light power bank that can be bought for 50 yuan, so do you dare to touch it?


I remember the "20000mAh high-end mobile power supply" bought on the street. As a result, only two storage batteries of the size of 5 batteries were built in. In order to imitate the weight more, it was filled in a sandbag for disguise. Fortunately, this mobile power supply It ’s just that you ca n’t charge it, and it ’s dangerous in case of boom. So go out, even if you choose a shared power supply on the street, don't buy a low-cost charging treasure on the street, and don't touch this type of mobile power supply!


Generally speaking, the quality of the power bank will not boom during the charging process, because they will buy protection batteries, of course, if you do n’t want to be so troublesome, still buy the first-line brand power bank at the beginning, after all, it is expensive It makes sense.
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