正海欣

　　Before there is no major breakthrough in battery technology, minimizing the charging time has become the unanimous choice of mobile phone manufacturers, and a variety of fast charging technologies have also come along. The mobile phone charger is composed of a stable power supply plus necessary constant current, voltage limiting, and time-limiting control circuits. As people become more dependent on mobile phones, mobile phone chargers are constantly developing and changing.

Mobile Phone Charger

Mobile phone chargers can be roughly divided into travel chargers, cradle chargers, and maintenance chargers. The main two types of contacts for general users are the first two. And the most sold on the market are travel chargers.

There are many types of travel chargers, common are cheap miniature travel chargers, ordinary desktop card-type chargers, and high-end desktop chargers with LCD displays.

Pay Attention When Buying

1.Chargers are classified according to their usage

1) Travel charger: This type of charger is small and easy to carry, and can charge the removable battery. However, with the popularity of non-removable batteries, such chargers have gradually decreased.

2) Block type charger: unique appearance, novel and beautiful, easy to carry, and built-in intelligent identification circuit, can automatically switch the output polarity of the charger to apply the positive and negative battery, the best charging effect.

3) Multi-port docking charger: This type of charger has multiple USB charging ports, which can charge a variety of digital products such as mobile phones and tablet computers, which is very suitable for home use. But such chargers tend to be larger and slower to charge.

4) Car charger: a charger that uses the universal power supply on the car as the power supply device.

2. Fast charger types

At present, there are three main types of fast charge technology: Quick Charge technology, Pump Express technology and USB PD technology. Most of the other fast charge protocols are derived from the above three fast charge technologies.

1) Quick Charge technology: This fast charging technology was developed by Qualcomm of the United States, and the third generation of QC 3.0 has also been officially commercialized. The fast charging technology mainly improves the charging efficiency by increasing the voltage, and the technology is relatively mature.

2) Pump Express fast charge technology: This fast charge technology is led by MediaTek. It intelligently analyzes the current to determine the initial voltage required for charging. The charger adjusts the output voltage according to this instruction to achieve the purpose of fast charging for mobile phones.

3) USB PD fast charge technology: The fast charge standard is divided into five specifications of 10W, 18W, 36W, 60W, 100W. The voltage is 5V, 12V and 20V, and the current is 1.5A, 2A, 3A and 5A.

3, Mobile Charger Purchase Tips

1. When purchasing a mobile phone charger, you should first consider the comprehensive factors such as the type of charger, the number of devices, and the charging speed. If you need to charge multiple devices, and there is no requirement on the charging speed, choose a multi-port dock charger.

2. Mobile phone chargers generally have two types of charging functions: one is on-board charging (the charger is used to charge the battery with the phone through an electrical connector), and the other is to charge the battery through the charging stand. Before purchasing, you should know the type, capacity, and nominal voltage of the battery you are using in order to choose a suitable charger.

3. In China only chargers with the "CCC" certification have a safety guarantee. Therefore, you should try to buy products with "CCC" or other certification marks. Secondly, choose a charger suitable for your mobile phone.

3, mobile charger purchase tips

1. When purchasing a mobile phone charger, you should first consider the comprehensive factors such as the type of charger, the number of devices, and the charging speed. If you need to charge multiple devices, and there is no requirement on the charging speed, choose a multi-port dock charger.

2. Mobile phone chargers generally have two types of charging functions: one is on-board charging (the charger is used to charge the battery with the phone through an electrical connector), and the other is to charge the battery through the charging stand. Before purchasing, you should know the type, capacity, and nominal voltage of the battery you are using in order to choose a suitable charger.

3. Only chargers with the "CCC" certification mark in China have a safety guarantee. Therefore, you should try to buy products with "CCC" or other certification marks. Secondly, choose a charger suitable for your mobile phone.

4, Mobile Charger Purchase Tips

1. When choosing a fast charge mobile phone charger, you should check whether your phone model supports this type of fast charge protocol. You know, fast charging technology is not compatible with each other.

2. When purchasing a travel charger, first note that its interface should fully match the charging interface of the mobile phone. Never choose a travel charger with a loose interface or an over-tight interface. The loose interface will make the current received by the mobile phone unstable, and may also cause a large instantaneous current, which will cause damage to the mobile phone's motherboard.

3. Select wide-band input voltage, that is, 100 ~ 220v / 50 ~ 60Hz, some charging heads only have 110v input voltage. If used directly in China, it may burn the charger or burn the phone.

5, Mobile Phone Charger Purchase Misunderstanding

1. Many consumers think that the chargers are the same, so they often choose the same appearance, but the price is cheap, it is very likely that this type of charger is replaced by some non-products, without quality assurance, it is prone to danger. Therefore, consumers are advised to purchase through formal channels.

2. It is not better to choose the faster charging speed when purchasing. The charging speed is mainly related to the current provided by the charger. The larger the charging current, the faster the charging speed. It should be noted that the larger the charging current, the higher the quality requirements for the internal system design of the charger and battery. The larger the charging current, the more heat may be caused during charging, and the more the battery performance may be damaged.

6. Mobile phone charger purchase traps

1, The merchant claims to be compatible with all fast charging technologies

Fast charging technology looks the same, but it is very different. The fast charging technology of each company is also incompatible with each other, so consumers can directly ignore such discovered products.

2, Charge once

Many businesses will drop the original charger and replace it with other miscellaneous brand chargers to sell as the original price. Should pay attention to read the instructions on the box of the mobile phone, see the standard configuration, and check whether the charger has the manufacturer's logo and anti-counterfeit trademark on the charger.

7. Phone charger purchase process

Select the type --- see the 3c logo --- choose the model that suits your mobile phone --- the regular channel to buy

8. Chinese standard for mobile phone charger

GB / T 21544-2008 Li-ion power charger for mobile communication handsets. The surface of the charger should be marked in Chinese, including the manufacturer, product model, product name, input voltage and current input frequency, output voltage and current, positive and negative poles, warning instructions, etc.

9, mobile phone charger quality

Apple, Samsung, Xiaomi, Google, oppo, Huawei

10.Mobile phone charger maintenance

1. Clean the charger and charging interface regularly. When cleaning, use a damp cloth or an antistatic cloth. Never use a dry cloth.

2. As an electronic product, accidental ingress of water or exposure to humid air when not used for a long time will cause different degrees of corrosion or oxidation to its internal electronic components.

3. To prevent accidental landing during use. Do not drop, hit or shake the charger. Rough handling of the charger can damage the internal circuit board.

4. Do not place the charger in a place where the temperature is too high. High temperatures can shorten the life of electronic devices, damage the charger, and deform or melt some plastic parts. Do not store the charger in a cold place. When the charger works in a super-cooled environment, when the internal temperature rises, moisture can form inside the charger and damage the circuit board.

5. Do not use strong chemicals, cleaning agents or strong detergents to clean the charger. To remove the stains on the appearance of the charger, you can use cotton with a small amount of absolute alcohol to scrub it.

11. Chinese mobile phone charger after-sales service

1. The validity period of the three packs of charger is one year. The validity period of the three packs is calculated from the date of issue of the invoice, and the time for delays due to repair occupation and no spare parts to be repaired is deducted.

2. Support 7 days no reason to return and 15 days free exchange service.

3. During the warranty period, free repairs can be performed by the manufacturer. Outside the warranty period, the repairs can be performed by the manufacturer or a third party. Third-party repairs will be relatively cheap though. But quality is not guaranteed and needs careful selection.