Modern people are inseparable from mobile devices such as mobile phones, computers, and tablets, but what if the battery is low when they are having fun? At this time, of course, it is the most powerful assistant to ensure battery life – mobile power supply! At present, there are many brands and models of mobile power supplies on the market, and there are many different brands. How do we choose to find the most suitable product for us? What brand of power bank is the best? How to use mobile power? Can the power bank be taken on the plane? The following is an introduction to the power bank encyclopedia.
Introduction to Power Bank
What is Power Bank
Power Bank, also known as power bank. A portable charger that integrates power supply and charging functions, which can charge digital devices such as mobile phones and tablet computers anytime, anywhere. Generally, lithium batteries (or dry batteries, less common) are used as power storage units, which are convenient and quick to use. It has a certain emergency function. In the case that many digital power sources cannot store electricity, it can supply power through some devices to achieve the effect of normal operation of digital products.
Charging treasure classification
Ordinary charging function mobile power bank
The current market is more mainstream One of the most popular types of power banks, they don’t come with any extended functions and can only be charged and discharged. Most of them are more fashionable in shape, and they use soft-packed batteries, which are professional external portable power banks.
Multifunctional power bank
This kind of power bank is also one of the most popular. In addition to the charging and discharging function of mobile power, they generally integrate some other practical functions, such as LED lighting function, LCD screen display function, etc.
Solar charging function mobile power bank
This mobile power bank is equipped with solar panels, which can be charged by sunlight during use. This kind of mobile power supply is not very practical at present.
ACPlug Power Bank
Power Bank With Folding AC Plug – Folding In-Line Power Bank : It can be directly plugged into the household socket to charge the product itself. It integrates the functions of the charger and the mobile power supply, which is more practical and portable.
Built-in charging line power bank
In addition to being able to charge digital products, users also pursue the portability of power banks. With the built-in charging cable, users can no longer be troubled by the lack of charging cables and adapters.
splicing type/split stacking power bank
the splicing of several independent power supplies , to achieve the expansion of the overall capacity of the power supply, to meet the greater demand for electricity. When the power consumption is small, the large-capacity power supply can be disassembled into a small-capacity power supply, which reduces the carrying weight and does not delay the battery life.
Wireless Charging Power Bank
No need to plug in a USB cable or connect a power cord to an outlet, you can wirelessly charge anywhere outdoors mobile power.
Tablet PC type
Tablet PC power bank is aimed at and solves the problem that tablet products are used for too short time. With a large-capacity mobile power supply, you can provide a steady stream of power for tablet products anytime, anywhere in a mobile state.
The lifespan of the mobile power bank
battery cells
Usually the standard imported 18650 A-type batteries are used for about 500 times. The first-line big names are also good. But the lifespan of second-tier brands is basically between 300-400 times.
Capacity
The larger the capacity of the mobile power supply, the longer the total lifespan, because usually the larger the capacity of the mobile power supply, the more it will be used once it is fully charged. The longer the time, the longer the lifespan.
Circuit board
Equivalent to the brain, the mobile power supply with high-quality circuit boards is more durable, easy to use, and safer. If it is the mobile power of inferior circuit boards The power supply has many failures, which can easily damage the mobile phone and even have the risk of explosion.
Pay attention to charging the power bank
Charging time of the power bank
The effect of battery capacity
Because the market There are many kinds of power bank capacities on the Internet, such as 2200mAh, 3000mAh, 4800mAh, 8000mAh, 18000mAh, etc. Of course, the time required for charging of 2200mAh and 18000mAh power banks under the same conditions is definitely different.
Influence of charging current
Theoretically, the larger the charging current, the shorter the time required to fully charge the power bank, however, the standard charging and discharging current Generally 0.2C, for example, a 5000mAh mobile power supply, the charging current is generally 5000*0.2=1000mA.
Power bank charging time=Cell capacity/Charging current
For example: 5000mAh power bank, input voltage, current: 5V, 1000mAh, then, the time required to fully charge the power bank = 5000mAh/1000mAh = 5 hours. Of course, this is without calculating any losses, so theoretically the charging time will be a little longer than 5 hours.
How to charge the power bank
1. Recognize the functions of the various parts and interfaces of the mobile power supply, and distinguish which one to use for your own device interface to prevent equipment damage caused by wrong interface connection.
2. After selecting the corresponding connector, it can be charged. Of course, these interfaces are only a few commonly used ones. If it is convenient, it is best to use the original data cable to charge.
3. During the charging process, it is generally automatic. Choose a power bank with overcharge protection to prevent damage to the phone due to overcharging.
4. In addition to larger capacity products requiring a dedicated charger for faster charging, generally a mobile phone charger can be used, and of course a computer USB interface (not very recommended).
5. Some charging treasures have other functions such as LED lights, which are generally controlled directly by the power switch. Long press for 2 seconds, or short press twice in a row to turn on or off.
Notes on charging the power bank
Charge the new power bank first
Newly purchased mobile When the power supply is used for the first time, the power is very low, so it is best to fully charge it for the first time after purchase.
Use of power sockets
Try to choose a good socket or socket when charging the mobile power supply, and some are not good. Small capacity is easy to cause security risks.
Charging time
When charging the power bank itself, the general time is 2-5 hours. It is best to unplug it from the socket in time after it is fully charged. Do not leave it charging for long periods of time.
Use a matching USBinterface
The corresponding devices of various USB data cables are different different. In order to use the power bank to power the device normally, please use the matching USB data interface.
The input voltage of the device
Pay attention to the voltage range of the input of the device when charging. Generally, the output range of the mobile power supply voltage is 5.3+-0.5v. If it is not within the range of the power bank, it is not recommended to use it.
Power Bank Buying Guide
Capacity
It is recommended to choose a product with about 5000 mAh for short-term emergency, and about 10000 mAh for business trip , generally higher than 15000 mAh or lower than 3000 mAh power bank, the practicality will be greatly reduced.
Cells
The current mobile power supply mainly uses liquid lithium-ion cells and lithium polymer cells, with relatively stable output efficiency, while lithium polymer cells Compared with liquid lithium-ion batteries, physical batteries have the characteristics of light weight, safety and efficiency.
Conversion rate
If the conversion rate is too low, the line loss of the mobile power supply will be very large, and there may be heat or even explosion. Products with a conversion rate of around 85% are already very good. If the claimed conversion rate is over 90%, it is likely to be a false report.
Product Compatibility
There are many kinds of digital products, and the circuit design and interface are not the same. Be sure to find out your own electronic products before purchasing The required interface, voltage and other information, if possible, bring it to the counter to test the machine.
Accessories and Additional Features
If there are multiple charging adapters to expand the range of use, dual ports can charge two electronic products at the same time, with LED Lighting can be emergency. In addition, the time of the solar charging function is too slow, which is a tasteless function.
Choose branded products
Choose branded products whenever possible. The establishment of a brand requires advertising, but also word-of-mouth. Choose a more well-known power bank brand, the product quality may be better, safer, and the future after-sales service will be more in place.
TIPS: It is worth noting that the price of power bank is very different today, which generally varies due to the type, brand, design, function, etc. of the battery. To measure the pros and cons of a mobile power supply, it is necessary to comprehensively consider the charging performance, durability, safety, conversion efficiency, appearance, etc. The price is only one of the reference standards, and cannot completely determine the quality.
Mobile power repair The power bank cannot be turned on The power of the power bank is always consumed very fast The built-in light of the power bank is off The power indicator of the power bank is inaccurate The battery is not fully charged and the power bank maintenance
1. Discharge static electricity during cleaning
Regularly clean the mobile power supply and the mobile power supply charging interface. Regularly clean the charging interface of the mobile power supply with an anti-static cloth or an anti-static brush, never use a dry cloth (static charge)!
2. Waterproof and moisture-proof
As an electronic product, accidentally entering water or being exposed to humid air when not in use for a long time will cause its internal Electronic components cause varying degrees of corrosion or oxidation.
3. Anti-drop and shock-proof
The internal components of the mobile power supply cannot withstand being knocked down. Tap or vibrate the power bank. Rough handling of the power bank can destroy the internal circuit boards.
4. Protect from cold and heat
High temperature can shorten the life of electronic devices and deform or melt some plastic parts. Moisture will form in the power bank working in a supercooled environment, destroying the circuit board.
5. Anti-strong chemicals
Do not use strong chemicals, cleaning agents or strong detergents to clean the power bank. To remove the appearance stains of the power bank, you can use cotton dipped in a small amount of anhydrous alcohol to scrub.
6. Correct charge and discharge
If it is not used for a long time, it is best to discharge and charge it once a month, so as to ensure that the internal cells are kept in the best condition status and effectively prolong its service life.
Can the mobile phone power bank be brought on the plane?
The Civil Aviation Administration of China stipulates that high-quality mobile power supplies that meet certain specifications can be brought on the plane, and no-brand, unsafe mobile power supplies can be carried on the plane. So many large mobile power sources are considered to meet the regulations and can be brought on the plane?
1. It is strictly forbidden to carry the power bank in the checked luggage, and the power bank can only be placed in the hand luggage.
2. It is strictly forbidden to carry a power bank with a rated energy exceeding 160Wh (watt-hour).
3. Carrying a power bank with a rated energy of ≥100Wh but ≤160Wh must be approved by the airline and not more than two.
4. It is strictly forbidden to carry charging treasures with unclear logos and other brands.
5. It is strictly forbidden to use the power bank during the flight.
6. It is strictly prohibited to carry the power bank for non-personal use.
Tips: According to the formula of capacity (mA) × voltage (volt) = rated energy value (Wh), plus the voltage and capacity of the battery are generally marked on the power bank, you only need to own Check and simply calculate to know whether your mobile power supply can be brought on the plane.
For example: According to the formula of rated energy value, when the voltage of a 20000mAh power bank is 4V, the rated energy value is 20000mAh×4V=80Wh, which is less than 160Wh, which is in line with the regulations of the Civil Aviation Administration of China.
