Who played badly your power bank

Maybe many consumers have had this experience, charging Po is not easy to use or particularly prone to bad? Faced with this situation, most people's first reaction is: Charging Bao must have quality problems! If there is such a problem with a very small number of charging treasures, then it should be a quality problem, but if one is used, it will be a bad one? This shows that you have a problem with the method of using the power bank plant.

Everybody usually uses the time to charge the treasure, basically in the outdoor or without the adapter case, to charge mobile phones, tablet computers and other digital devices, the operation is relatively simple, nothing more than to use a charging cable, respectively, connect the charging treasure And mobile phones, open the key, or simply smart identification automatic charging, can be described as simple and easy to operate, without training can be employed.

Since everyone's steps in using the DOCA charging treasure are basically the same, why does someone's charging treasure work well and someone's charging treasure is particularly vulnerable? Today, we will come together and talk about who is playing with your charging treasure!

Because the charging treasure does not need to be recharged every day, when it is used, many users will leave it aside and wait for the next time they need to use it, but after a while, the users find that The capacity of the charging treasure that hasn't been used a few times before seems to be getting lower, or simply failing to charge in. Why?

What hatred? Who played badly your charging treasure

Use charging treasure to charge the phone

Almost all lithium-ion batteries used in the interior of the charging pouch are currently sold on the market. Due to their chemical characteristics, their capacity will gradually decrease with continued use. If they are not used for a long time, or if they are used excessively, they will become batteries. When the voltage is lower than 2.4V, the internal material will be carbonized, which will further accelerate the decay of the cell's capacity and service life. In severe cases, the cell may appear scrapped. This phenomenon is what we often say as over-discharge.

What hatred? Who played badly your charging treasure

Charging treasures that are not used for a long time should also be supplemented with electricity

Preventive measures: Lithium-ion batteries have almost no memory effect, so we don't usually have to overfill them or use them completely. If you do not use it for a long time, you should use it for a period of time (about 3 months) to supplement it.

Solution: Because the battery of the mobile phone battery is also a lithium battery, when the battery of the mobile phone is overcharged and cannot be charged with the original adapter, we can use the universal charger to charge the battery. The principle is that the voltage of the universal charger is 4.2V-4.3V, which is higher than the output voltage of the mobile phone adapter and can restore the internal voltage of the lithium battery. If the conditions permit, charging treasures that cannot be used due to overdischarge can also be activated in this way.

Under normal circumstances, we only use the charging treasure when traveling or outdoors, but you may not think that charging treasure will also be affected by the ambient temperature. Careful users may find that there is a description of the appropriate temperature range for the Charging Pod in the instruction manual for many Charging Pods.

The above figure shows the suitable operating temperature range of this charging treasure is: 0 °C -45 °C, which shows that high temperature and low temperature will cause a certain impact on the lithium battery, the following we will be on the high temperature and low temperature in terms of charging treasure What to look out for during use.

1, high temperature

Usually when we use the charging treasure to charge the mobile phone, the charging treasure body will appear some normal fever phenomenon, but the high temperature is the killer of all electronic components, so when the charging treasure body heat is too large, the time is too long , will accelerate the aging of internal components or directly lead to damage.

If the temperature of the charging battery rises continuously, it may cause the pressure inside the battery to increase. If the critical value is reached, the battery will release the pressure through the side pressure relief valve, but the battery will be damaged. If the pressure relief valve fails to open successfully, the battery may explode, which directly threatens the personal safety of the user.

2, low temperature

Lithium batteries use electrolytes internally, so the low temperature environment will affect the conductivity and activity of the batteries and reduce the battery capacity. The following figure shows the discharge effect of a lithium battery at low temperature. As the temperature decreases, the discharge performance of the lithium battery decreases significantly and the discharge capacity decreases significantly.

When the temperature dropped to -30°C, the discharge capacity of the battery was 87.0% of the room-temperature discharge capacity, and the average discharge voltage was reduced by 0.598V compared with room temperature, and the stored energy was only about 70% of the normal environment. The constant current charging capacity of a lithium ion battery is only 14% of the total charging capacity, and the constant voltage charging time becomes very long.

In addition, charging treasures are used in a low-temperature environment. The rise in the internal temperature and the external cold air can easily cause the circuit board to form fog and cause a short circuit, which also damages the charging module.

Solution: 1. When the ambient temperature is high, do not wrap and cover items that are not conducive to heat dissipation on the body of the Charging Pod, and do not place it in a space with a tight, tight seal. 2. When the temperature of the Po is too high, Do not put it in the refrigerator to cool down, you can let it cool naturally by closing the charging method; 3, in the winter or cold northern regions, charging treasure to avoid exposure to cold air for a long time, can be equipped with a velvet bag, etc. Cold measures.

Three No" Charging Po can not be on the plane

During the Spring Festival holidays, many users choose to fly home by plane. Because they are flying at high altitude, so the security before flight is very strict. Lighter oil, firecrackers, liquids, etc. are not allowed to bring on aircraft. At the same time, many passengers also Discovered that the large-capacity mobile power that he carried was also denied boarding. Why?

DOCA According to news reports, Jiangbei Airport was only on the first day of the Spring Festival (4th), and airport security stopped more than 300 charging treasures that did not meet the carrying regulations.

For the first time in 2014, the Civil Aviation Administration issued an announcement for passengers carrying “charging treasures” for civil aviation passengers: Boarding passengers are only allowed to carry charging treasures with rated energy within 160Wh (about 43243mAh), and no numeration is allowed. Each passenger must not carry more than two charging treasures.

At the airport security check, more than 300 charging treasures that are not in compliance with the carrying regulations are excluded. In addition to the excessive capacity, most of the signs are unclear. Some of the charging treasures are even “three nothing” products without any identification. Airport security staff introduced that when traveling by plane, some items can only be carried by the passengers on the plane and cannot be placed in the trunk. These items include: commonly used mobile phone charging treasure, electronic watches, calculators, cameras, mobile phones, laptops, camcorders and so on.power bank plant

Prohibited by the plane to carry items include: firearms, ammunition, police, controlled knives, radioactive materials, flammable, explosive, corrosive chemicals, poison products, oxidants and magnetic materials, etc. Once these items are found, the light is Disapproving boarding may result in legal liability when serious. Never carry the above items when you are traveling by car, boat, or plane.

Demystify the understanding of mobile power

The popularity of large-screen and high-profile mobile devices has made DOCA mobile power (charging treasure) an effective assistant to protect life. It has been favored by many users, and some friends even purchase a variety of mobile power sources to cope with different situations of charging and use.

You are fooled by the business! Demystify the understanding of mobile power

Due to the lack of professional knowledge, consumers are vulnerable to the publicity of businesses when purchasing and using mobile power. There are also many misunderstandings. This article will analyze the common mistakes in mobile power and help you to avoid detours when purchasing and using mobile power. , Also avoid the impulse to buy low-priced and inferior products because of some propaganda.power bnak plant

The vast market has not only attracted many businesses into the mobile power industry, but also made the competition among products more fierce. Many businesses use false publicity to mislead consumers in order to sell products. Many misunderstandings are here to enter our consciousness.

You are fooled by the business! Demystify the understanding of mobile power

In addition, some users will use the habit of using rechargeable batteries such as nickel metal hydride batteries on mobile power, some friends will simply understand the product information from a literal meaning, all make mistakes in the understanding of mobile power, here we are for you one by one Interpretation.

Unsafe love explosion? Why is the 18650 widely used

The mobile power cell directly determines the capacity of the product, but because the cell is covered by the shell, the user cannot directly see the cell of the mobile power source, so this place is also where the merchant likes to make a fuss.

You are fooled by the business! Demystify the understanding of mobile power

The 18650 battery claimed by the merchant is not safe and has no basis

(The right side of the figure is actually the 5th battery that leaks the liquid. The picture is taken from Taobao.com)

We have seen in the news that mobile power batteries “explode” and let many consumers think that the 18650 batteries are more dangerous. Businesses have taken the opportunity to claim that their mobile power is more secure and they are equipped with many 18650 battery wreckage photos. Urging consumers to buy their products.

In fact, many news and business photos in the 18650 is not an explosion, but the battery positive pressure relief valve pops up when the internal pressure is too high, this is a normal performance of the safety batteries in harsh environments, the battery's shell Still intact, it is not appropriate to call it an explosion.

You are fooled by the business! Demystify the understanding of mobile power

18650 battery commonly used in laptops

In fact, because the technology is more mature, the consistency of the battery is very high, and the 18650 battery has been widely used. From small flashlights to large flashlights to Tesla electric cars, all 18650 batteries play a role. The vast majority of laptops use 18650 batteries, and it is normal for such a large amount of damage to occur. The 18650 batteries are not as explosive as they claim to be. As long as they are branded products, they also have good safety and security.

You are fooled by the business! Demystify the understanding of mobile power

Lithium-ion batteries with various dimensions (images from aliimg)

Note: Scientific knowledge

The 18650 is a model of battery size. It refers to a cylindrical battery with a diameter of 18 mm and a length of 65 mm. A liquid lithium ion battery is not a 18650 battery as long as it is made into other shapes, but its working principle and basic characteristics are still the same. .

Trickery? Thin design is not a polymer

Flat and thin batteries are polymer batteries? With 18650 easily exploding gimmicks, businesses like to advertise on polymer batteries, especially ultra-thin design products, consumers are more likely to believe this.

You are fooled by the business! Demystify the understanding of mobile power

Ultra-thin mobile power likes to claim polymer batteries (images from Taobao)

In current electronic products, especially in mobile power supplies, the so-called "polymer battery" is a gimmick, but the 18650 battery is replaced by a package. The cylindrical housing is replaced by an aluminum plastic film package. Its working principle is still the same. The correct name should be a soft-packaged lithium-ion battery.

You are fooled by the business! Demystify the understanding of mobile power

Liquid lithium-ion battery disguised as a polymer battery

Polymer lithium batteries are currently very few commercialized, and the current cost is very high, due to the greater difference in the charge and discharge efficiency of polymer batteries, it also reduces the overall performance of the finished battery pairing.

Lithium-ion battery

Rd

Battery indication

You are fooled by the business! Demystify the understanding of mobile power

You are fooled by the business! Demystify the understanding of mobile power

Cathode material

LiCoO2

LiNiCoMnO2

Negative electrode material

graphite

graphite

manufacturing cost

Lower

high

Cycles

300-1000

>500

Energy Density

140mAh/g

160mAh/g

Safety performance

well

well

In fact, there is no need to worry about this. Since the safety performance and battery capacity of polymer batteries and liquid lithium-ion batteries are not much different, the price of the latter is much lower, so you don't have to blindly pursue the so-called polymer batteries when you choose. Do not worry about whether the business is advertised as a polymer battery.

You are fooled by the business! Demystify the understanding of mobile power

The same package for liquid lithium-ion batteries

Note: Scientific knowledge

Polymer batteries and 18650 batteries are not one of the two classification methods of lithium batteries. 18650 is one of the battery's shape classifications, and the polymer is classified according to the lithium battery electrolyte. The two are not either. His relationship, so many businesses promote the battery classification is wrong.

Small size big energy? Lithium battery technology to be improved

An intuitive parameter when choosing a mobile power source is capacity. Large-capacity products make people feel more endurance protection. Products with higher values are also more popular with consumers. Businesses are also happy to “fill water” with capacity to make products better sold.

As we mentioned before, the differences in the technology of the battery manufacturers will cause differences in the capacity of batteries of different brands, but it should be noted that this difference only makes the difference in the energy density between different batteries, and it is insufficient. To open the gap by the order of magnitude.

In other words, if a branded mobile power source has a capacity of 10,000 mAh (37 Wh), and its volume-weight product will not exceed 15,000 mAh (55.5 Wh), this is the current technological decision. , And no black technology can make a small mobile power can have large capacity.

It can be understood that different batches of mobile power supply will have different capacity, but the Shanzhai products are not satisfied with this point. When the product capacity is directly marked with thousands or even tens of thousands of milliamperes, the user feels more "substantial."

The larger the mobile power is, the larger the mobile phone's capacity is, so the merchants generally do not produce products with too large capacity. If you see the product's publicity is a small size, I still advise you to look for another one.

Note: Scientific knowledge

At present, the single cell 18650 cell has a capacity of 2200 to 3400 mAh, the price is high when it exceeds 2800 mAh, and it is rarely used in mobile power; the volume ratio of the soft-packaged lithium-ion battery is not very different from 18650. There is also no significant difference in weight; the polymer battery has a slightly higher energy density but a slightly higher internal resistance.

What is the cost of DIY power bank ?

What is the cost of DIY charging?

DOCA Charging treasure has begun to enter the life of more and more digital device users, it can bring you convenient and fast charging support. There are many brands in the market, ranging from dozens to hundreds of pieces, and consumers have more choices.

With the popularity of charging treasure, the Internet also gradually circulated some charging treasure is in use process of the combustion or explosion incidents, for security or price consideration, some users had the idea of DIY charging treasure myself, satisfied their desire to on the one hand, on the other hand, buy their own parts charging treasure, also have a clearer cognition about the quality of the product.

How much is the cost of DIY charging treasure without money?

When it comes to DIY, many people's first reaction is to save money and have fun. As long as the structure and function of charging treasure have a clear understanding, together with many components can buy on the net, then the cost of DIY a charging treasure really is not high, the hot DIY passion + good beginning ability, buy back parts. You can do it if you want.

Look at the battery pack power bank plant

Back to the point, let's introduce you to the structure of rechargeable treasure. The most basic component of a charger kit is: shell + circuit board + core. Let's first look at the function of the shell. Many users may feel that the shell is nothing more than the carrier of the core and circuit board, and it protects them. However, the real function of the shell is not limited to this point. Its protection function is two-way. Flame retardant and high temperature resistance are also required when there is danger of high temperature and burning inside. Therefore, the material of the shell is very important. Don't be careless.

With shell we take a look at the internal, charging treasure are basically used PCB, can realize lift pressure switch, voltage regulator, steady flow, prevent overcharge, prevent short circuit and so on a series of functions, it directly

affects the actual charge and discharge performance of charging treasure, if the quality of circuit board too poor or no equipped with charge and discharge protection design, use process is likely to be charging equipment damage. In addition, some of the additional functions of the charger, such as lighting and power display, are also realized by attaching to the circuit board.

Finally, let's talk about the charge cell. Batteries charging size determines the treasure to digital devices of life power, it has been a focus on high consumers parts, because in the online charging treasure to negative news reports, many of them are batteries explosion, so the batteries quality directly related to the personal safety of users.

Unknown details in power bank

More and more people can’t live without the convenience of digital technology such as mobile phones and tablet computers. Most digital devices rely on electricity as their driving force. Therefore, many people need to use charging treasures to give them a variety of digital devices. The devices add power to increase their battery life. Charging treasure industry has been hot for several years, can be described as strong and powerful, many brands have also grown up in the minds of consumers, "fighting brand", "well-known in the industry", everyone does not know, in fact, we do not really understand this product .power bank plant

Let's take a brief look at the details of the unknown design, functionality, and quality of ChargePad today.

Usually, everyone understands the quality of charging treasures are stuck in the obvious aspects of the shell material, circuit board workmanship and cell quality. It is not too much to understand some of the potential quality details of the product.

Because the market is becoming more mature, consumers' demands for charging treasures are also increasing. Therefore, manufacturers have different emphasis on product design and functional differentiation. Some products are rich in software function design, such as intelligent identification and intelligence. Matching output, smart protection, etc.; some products are more inclined to improve the hardware, such as making the product more user-friendly, improving component quality and workmanship, etc., which we can all call latent quality details, and they affect in all aspects. The user's comfort level.

There are many charging treasures on the market with dual USB output interfaces, but users will find many problems during use. For example, they cannot charge two devices at the same time. The maximum output parameters and so on.

When choosing the dual USB output interface, we must be clear about the following two questions: 1. Is the nominal output parameter the single interface output or the sum of the two interfaces? 2. What is the maximum output parameter that can be achieved when two ports are used at the same time?

Let's take the above diagram as an example. It has two standard USB output interfaces. The interfaces are marked with the maximum output parameters they can provide: Blue USB supports up to 5V/2.4A output, and black USB supports up to 5V/1A output. Then the problem comes: When we use the blue interface, can the black interface be used? 2. What are the maximum output parameters that can be reached when using both interfaces to charge the device at the same time?

If we are using the blue interface, the black interface can be used normally, it is proved that it can simultaneously supply a 5V/2.4A input parameter device and an input parameter 5V/1A device power;

If we use the blue interface, the black interface can not be used, then prove that the total output parameter of the two interfaces is 5V/2.4A, we can use it to charge the 5V/2.4A input device separately, and also can give two The device with the input parameter of 5V/1A is charged.

The necessity of output parameters is clearly defined: 1. It is safer to use the parameters that match the equipment being charged, to avoid charging the device. 2. The dual-interface charging Possibly requires intelligent distribution of output modes. Suppose a charging treasure charges two devices at the same time. If there is no intelligent allocation, it may result in insufficient output for both devices. The intelligent distribution output is designed to ensure the input power required for high-priority products. Allow users to urgently need the fastest charging speed;

The hazard of output parameters is not clear: Some manufacturers deliberately do not standardize the output parameters on the output interface, and play a word game when they are publicized. As a result, users cannot use the products normally after they buy the products or the charging speed is too slow, causing unnecessary losses; The protective function of the charged device is not perfect, and the user mistakenly uses a large current to charge the low-current device, easily causing over-current and causing damage to the device.

Wireless Charge

Go to mobile power plant to learn about Type-c mobile power

In the past two years, fast-charged products have been developing rapidly, especially with the OPPO mobile phone that has been charging for three minutes, calling for two hours, and advertisements for various television programs have been bombed all the time. Along with this, various fast-charged mobile power supplies developed by the mobile power plant have also emerged. , Let everyone know about Type-c and Type-c mobile power today. Compared to ordinary USB2.0, Type-c has the following features:

   1. Using the Type-C interface, the transmission efficiency is faster than the traditional USB2.0 interface, and the theoretical bandwidth of the traditional interface is upgraded from 5Gbps to 10Gbps.

   2. The charging cable of Type-c mobile power supply can be inserted arbitrarily and it is convenient to use.

3, Type-C interface size is less 8.3 * 2.5mm, longer life, can be repeatedly plugged more than 100,000 times.

   4, HDMI, VGA, DVI interface, etc. can be extended through the Type-C interface to achieve the perfect 4K resolution audio and video signal transmission.

   5. The Type-C interface conforms to the USB3.1 standard, and the maximum output power supports 100W. At the same time, it supports bidirectional fast charging (mobile phone or external device support), which can both input and output. Of course, the Type-c mobile power supply also requires external hardware support to achieve fast charging. If it is just an ordinary mobile phone, then it is an ordinary mobile power supply. If the charging head for charging it is only ordinary, then Charging efficiency is only ordinary, and can not achieve fast charging function, so when choosing, depends on whether your phone supports Type-c charging, and now many new mobile phones support Type-c charging.

Android enters the era of fast charging How to play mobile power?

The boat of friendship can't be said to be overturned, but the era of Andrews came to say it! In the first half of 2016, Xiaomi, Huawei, Meizu, Samsung, and VIVO released new machines in the first half of 2016 to implement the concept of large capacity, high operation, and low price, making it easy to create a fun-filled environment. Charm experience. Android smart phones consume a lot of power due to frequent start-up applications and calculations. From time to time, it is necessary to perform power replenishment. It is customary to carry chargers wherever they go, greatly restricting users' free operation. To this end, the recent launch of millet 5, Meizu PRO6, Samsung S7, Huawei P9, VIVO Xplay5 and other mobile phones are equipped with their own proud of fast charging technology, so that smart phone power transmission is efficient and convenient.power bank plant

As the name suggests, fast charging technology refers to a fast charging technology. Compared with the traditional mode, fast charging technology will give more power to the mobile phone in the same operating time, or it will start from zero in a very short time. , Pull up to meet the level of basic operational needs, fast charging technology can quickly increase the smart phone's battery charge and running time, do not have to worry about frequently plugging and unplugging the charger.

As the saying goes, "Thousands of people face each other," the "fast charge" technologies adopted by major manufacturers are not the same. Different mobile phones have different standards, and it is difficult to find a clear definition for complete interpretation. Millet 5 is equipped with Qualcomm Quick Charge 3.0 fast charging technology, using Type-C interface, excellent charging performance; Huawei P9 supports fast charging protocol, you can buy 9V/2A fast charge head for free charging; Meizu PRO 6 is equipped with mCharge3.0 fast charging technology, theoretical charging speed faster; VIOV Xplay5 mobile phone uses a twin engine flash charging technology, up to 9V/2A charging mode, to further enhance the charging speed. Different technologies have different speeds and different speeds. Different mobile phones have different standards, but they are called fast-charged, fast-charged and slow-filled silly and unclear, and people can not help but be full of uncertainty about the era of Android fast-charge.

After the smart mobile phone enters the era of fast charging, what kind of role will mobile power play and provide services to users? Mobile power, also known as "charging treasure", is one of the smart phone era's greatest invention, for people who are not long out of the socket can not be charged, resulting in a more long bow entertainment experience, easily the fun of intelligent life will be extended This is the charm of mobile power.

    Fast charging technology mainly depends on the transmission and conversion of the power generated by the charger. For the majority of users, the limitations of choosing a mobile power source for charging are smaller. In almost any environmental condition, the mobile power supply can be quickly powered and given to the mobile phone. Enough power protection!

    As far as the smart phone industry is concerned, different mobile phones have different standards, but they can all be called fast charging. The specifications are not clear, and defining the basis and actual effect of fast charging or slow charging is still fogging. Look at the feeling of flowers. Under this circumstance, the mobile power supply will solve the problem of fast charging on a universal basis based on its own technical characteristics and standards, find a fast charging solution for the user, define a fast charging standard for the industry, and assign Android smart phones. More speed charging fun!

    At present, fast charging technology in the field of mobile power is becoming more and more mature. Meizu, Pinshang, Romoss, LeTV and other major brands have introduced rapid charging equipment with independent innovation technology, leading the fast charge in the field of mobile power supply. Popularity. The rapid charging of mobile power has undoubtedly redefined a "fast charge standard" for Android users, and at the same time, the fast-charged mobile power can be used as a universal technology under the universal standard, allowing users to enjoy a more rapid Mobile charging experience.

Android enters the era of fast charging, how to play mobile power? Through the above recounts, I believe that everyone has already had the answer in mind. For the majority of consumers, the practical effect is to lead the purchase of the king! When the Android mobile phone has entered the era of fast charging, the role of mobile power is also changing, from the traditional simple power supply protection to the problem of fast charge on the basis of universal, and to create a "fast charge "Specification, to provide a better user experience for the majority of users!

Customer Video Feedback

Can all mobile devices use mobile power?

With the development of society, science and technology have also developed rapidly, and electronic products have become more and more popular. What follows is the demand for electricity. The emergence of power bank plants has undoubtedly solved the power demand for electronic products, but not all electronic products can use mobile power.

First of all, the mobile power supply is just a device that can be carried around to charge electronic products. It is like a plug that can be moved. In this sense, electronic products should all be able to use mobile power.

However, electronic products and mobile power are not produced by the same manufacturer after all, and they are different in many specifications, such as the current and voltage of the input and output. For example, when a mobile phone is charged with so many input voltages, exceeding or less than this amount cannot be charged normally, but the output voltage of a mobile power source for charging the mobile phone is not within this range. In addition, the charging jack of the electronic product may not match the mobile jack of the data line provided by the mobile power supply, which cannot be charged normally. Therefore, in this sense, not all electronic products can use mobile power. Which digital products are suitable for FOST mobile power?

To sum up, all electronic products can theoretically use mobile power, but they may not be able to be used in practice

Travel by airplane with powerbank treasure

Due to the popularity of smartphones and tablet computers, power bank treasure has become an essential artifact for our travels. However, if we take the Baobao to go by plane, the name aviation authority has stricter regulations for charging treasures. Let's introduce travel by plane below. With charging treasure need to pay attention to what power bank plant

According to the regulations of the naming and aviation authority, the number of registered passengers can not have more than two charging treasures. Therefore, when we travel, we must control the number of charging treasures. If several people go together, it is best to Multiple charging treasures to be carried separately to avoid being charged when the number of charging treasures is exceeded

n addition to the limited number of charging treasures, there are strict restrictions on the capacity of charging treasures, so we must check our charging capacity before we go.

The National Aviation Authority stipulates that passengers’ charging treasures cannot exceed 160Wh. Charging treasures less than 100Wh carry no problems. If they are greater than 100Wh and less than 160Wh, we will negotiate with the airline. The airline agrees that we can bring the machine. , but still more than 160Wh charging treasure, can only confiscated or sleep at home

Many charging treasures do not mark the capacity of the charging treasure is the number of Wh, only charging treasure rated current and voltage, so many partners certainly do not know how to determine their own charging treasure is how much Wh

n fact, Wh can be converted by the formula

Wh= V x Ah

(V is the voltage marked on the charging treasure, Ah is the current marked on the charging treasure)

for example

Charging treasure nominal voltage is 5V, nominal capacity is 10000mAh

At this time, the capacity of the charging treasure is

5X10=50Wh

5

After preparing for the standard charging treasure, the next step is to start with a happy heart. We must pay attention before boarding the plane. The charging treasure we carry must be carried with us. We cannot place the charging treasure in checked baggage.

In the security check, we need to take the charging treasure that we need to take out from the bag. Passing the security check separately is the same as carrying the laptop and the camera.

Finally succeeded in getting onto the gray machine. I thought that I would pass through it. Let's not relax. Even on the plane, we must pay attention to, for our personal safety, we can't use the charging treasure to charge the electronic equipment on the gray machine, we must ensure that the charging treasure is closed.

Finally, I wish everyone a safe trip, a relaxed and happy journey!

Wuhan subway power bank security check to the plane to the total ban over 20,000 mah.

Wuhan metro charging treasure security aligning with the summation exceeds 20000 mah is prohibited to carry: wuhan citizens to take the subway to pay attention to the future, according to the requirements of the public security department as the new "the catalogue of prohibited articles carried by passengers in wuhan rail transit" began, the passenger carrying capacity of more than 20000 ma charging treasure, lithium batteries will be banned on the subway. At present, the subway stations in wuhan have started security checks according to the new catalogue.power bank plant

  

With the popularization of smart phones, the charging treasure has become a necessity for some citizens to live, said the head of the wuhan metro operation company. But in recent years, some cities at home and abroad have witnessed the burning of high-power charging treasure and even explosion. If such a thing happens in a relatively closed, crowded subway station, the consequences will be dire.

"This time, the combined capacity of more than 20,000 milliamps of rechargeable batteries and lithium batteries is included in the list, which is entirely due to the safety and responsibility of passengers." For example, passengers carry three charging stations, but the total capacity of the three charging stations is more than 20,000 mah, and passengers can't get in, the person said.

The charging board and lithium battery are small, how can they be detected by the security detector? According to the responsible person of wuhan metro operation company, the charging treasure is made up of battery pack, and the bulk of the battery pack of 6 batteries is about 7500 ma. Subway station projection imaging, X-ray machines can see items outline, security personnel by discriminant power battery pack size, charging more than 6 batteries 2 piece of treasure will take out passengers, please accept the artificial check and confirm the total capacity.

These people advise passengers to take the subway with as little charge as possible, such as charging treasure, lithium battery, and so on, to carry the minimum carrying capacity. Now, most stations have charging sockets, and passengers' mobile devices, such as those without electricity, can be found nearby to recharge their batteries. He also appealed to the public to take the subway with a sense of safety, ethics and ownership, actively cooperating with security checks, and taking the subway without any contraband.

As the weather gets hotter, some women carry some sun protection and skin care products with them. Wuhan metro operation company owner explained, sunscreen, stop sweat spray, perfume body spray, hair gel, pesticides, such as medical alcohol have indicated in many spray "extremely flammable" "pay attention to the high temperature" and other words, or a sign of flammable and explosive, is also banned in the subway.

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Mobile phone wireless charger/Apple phone, Samsung mobile phone