It takes more than 4 hours to charge, what the hell is fast charging

If the phone prompts slow charging, please use the standard charger and data cable, and make sure that the connection between the charger and the data cable is tight.

If your phone does not prompt slow charging, but you still feel that the charging speed is slow, please check the following:

1) Avoid using your phone while charging.

2) End the enddesk to run the program (the last application button in the bottom left corner - end).

3) Uninstall the third-party battery management software from your phone.

1) Check if there is a version update on your phone and upgrade to the latest version.

2) Please back up the data in your phone and restore your phone to factory settings.

3) If the above methods are invalid, please bring the purchase invoice, warranty card and machine to the Samsung service center, and a professional after-sales engineer will help you deal with it.

The phone battery has been activated at the factory, and it can be fully charged normally. The charging time is generally about 2-5 hours. Because the battery capacity and charger power of each mobile phone are not exactly the same, the charging time will also be different.

If you are using a 2A charger, the charging time is relatively short.

If your Samsung phone is charging slowly, it is recommended:

1.Use the original charger to turn off the charging and check whether the phone is slow to charge when it is turned off.

2.If your phone is only charging slowly when it is turned on, please do you:

1) End the end-run program (Recent Applications button in the bottom left corner - End) 2) Uninstall the third-party battery management software from your phone.

1) Check if there is a version update on your phone and upgrade to the latest version.

2) Please back up the data in your phone and restore your phone to factory settings.

3) If the above methods are invalid, please bring the purchase invoice, repair card and machine to the service center, and a professional after-sales engineer will help you deal with it.

1.Charging method.

At present, it is mainly divided into two types: DC fast charging and AC slow charging. DC fast charging uses high-power power output, generally speaking, 20%-80% power takes about 30-45 minutes, and after the power exceeds 80%, the charging power will drop significantly, and the last 5% is reduced to trickle charging.

state, so it takes at least 2 hours from low battery to full charge. Core orange for fast charging, overall battery capacity.

The larger the car, the higher the charging power it can support, but there is no qualitative difference in the time it takes to be fully charged. AC slow charging uses 220V household electricity, regardless of the battery capacity, it is generally charged at a constant power of about 7kw, so the charging time of slow charging is proportional to the battery capacity. My car battery capacity is 45kwh, it takes hours for 0-100% charge, and if the battery capacity reaches more than 70kwh, it takes more than 10 hours to fully charge.

2.Real-time temperature of the battery pack.

At this stage, the temperature tolerance of the battery is relatively squeamish, in order to protect the battery, BMS (battery management system.

Leakage below 10 or above 35 will reduce the current of charge and discharge. For example, the maximum current of fast charging in my car is 120A under normal temperature, but it is often only about 66A in winter.

3.The type and quality of the fast charging pile.

There are various operators, power distribution equipment and charging piles of various charging stations.

The health status is uneven, so the charging power between the fast charging piles is also very different, some piles are as slow as a snail, far from reaching the maximum power allowed by the battery, and it is unlucky to catch up.

4.Current remaining power.

This is actually nonsense, under the premise that other conditions remain the same, the more power remains, the charging time must be shorter, the less electricity is left, the longer the charging time, there is nothing to say.

First of all, whether it is a tablet or a mobile phone, the charging power is basically only at the peak rated power for a while. It is said that it is 20W fast charging, and it may only be at this power for a short period of time, and I feel very good if it can have 15-16W on average. It's normal for different chargers to differ.

In my opinion, this is true for the iPad 2020, and it is also true for the iPhone 12.

The ipad2020 battery capacity itself is a mystery, and some tests only have 80+% health, and I personally prefer to attribute it to quality control issues. That is to say, the ipad2020 that everyone gets may have a relatively large difference in battery capacity, and the comparison of charging time is not very significant.

Compared with the ipad2018 in my hand, it takes six or seven hours to fully charge with the 10W charging head, and I feel that the ipad2020 four hours is relatively fast, and the charging time converted from power is more reasonable. But with the gallium nitride PD fast charging head next to the ear, I feel a lot faster, maybe this is the power of money.

Then a friendly reminder, the efficiency of the third-party or official 18W and 20W PD charging heads on the market is about the same. For friends who need to buy a charger, buying 18w sex price is higher, and sometimes you can buy it for twenty or thirty yuan for activities.

The fast charging of the mobile phone, the application may run or there may be background application activities that consume a lot of power, and the mobile phone will heat up a lot, and the power management will slow down the charging speed to ensure the stability of the power supply of the power-consuming objects and keep the mobile phone in normal use.

When the standby lock screen is off, the speed of fast charging may be normal. If the temperature of the mobile phone is normal, charging fast will not slow down the charging due to heat protection.

Playing with your phone while charging will make the charging speed slower.

If you want to be fully charged in 3 or 4 hours, there may be a problem with the charger or charging cable, and the fast charging function cannot be turned on. Try changing the charger charging cable, and try to replace the charger with a new one. Or restart the phone cover to try it.

Check if you are using the original charger and cable.

Nowadays, many mobile phones use large-capacity batteries (3000-4000amh), but because the charger is basically universal, many people still use the charger of the previous mobile phone or use the computer to charge, because the charging current provided is only 500-1000mA, so it takes a long time to charge. In addition, some substandard charging cables can also cause such problems.

If they are ruled out, it may be a problem with the battery, and it is generally when the battery overheating and other problems are detected, the mobile phone will limit the current and reduce the charging speed to reduce the charging temperature.

This is divided into several situations,The first common problem is that the data cable is not plugged into the phone,Last time my phone was like this,Mine is fast charging,Suddenly the phone shows that the charging speed is slow,Then I re-plugged the data cable will not be。 The second is that your cable or charger will also be like this when it is aging. Finally, there is a problem with your phone's battery.

It is recommended that you go to the first and second questions.

Summary. Hello, glad to answer for you. It will not be good to charge the earphone charging case for an additional 4 hours, and it will not affect the charging case.

Because the current charging compartment has the motherboard to intelligently identify the charging status, if the earbuds are fully charged, the earbuds are preferentially selected, if the earbuds are not in the charging compartment, then the charging compartment will automatically cut off the power, so it is safe, and there will be no danger caused by excessive charging. The general meaning is that our mobile phone can only be charged, and it will automatically turn off when it is fully charged, and it will be replenished in a trickle mode.

Is there anything wrong with my bluetooth headset and charging case now when I put it in the company to charge overnight?

Hello, glad to answer for you. It will not be good to charge the charging compartment for 4 hours more, and it will not affect the charging compartment. Because the current charging compartment has the motherboard to intelligently identify the charging status, if the earbuds are fully charged, the earbuds are preferentially selected, if the earbuds are not in the charging compartment, then the charging compartment will automatically cut off the power, so it is safe, and there will be no danger caused by excessive charging.

The general meaning is that our hand sail training machine can only be charged, and it will automatically power off when it is fully charged, and it will be supplemented by trickle.

Will there be **?

Hello, no, don't worry.

My headphones and charging compartment were charged overnight in the company.

Does he automatically power off?

Because the manufacturer has set it before leaving the factory, if there are users who sleep at night to charge the booklet, then one sleep will let Feng Qing Tan Lu hours, and it will not be completely blown up. <>

Then he will cut off the power himself?

Hello, yes, it will automatically power off, the same as the mobile phone, smart charging, it seems to have been charging, but in fact it has been automatically powered off.

<> "How many minutes does it take to charge?

Some time ago, the topic of "electric car range of 1000 kilometers, charging only a few minutes" has caused a lot of controversy, the reason is that the academician of science believes that in terms of current technology, in the short term, if you want a pure electric car to reach 1000 kilometers, it only takes a few minutes to charge, which is obviously unrealistic.

In this regard, the person in charge of some groups responded that the current charging pile is the problem that needs to be solved, and the pure electric car has a range of 1,000 kilometers, and it only takes a few minutes to charge it in a short period of time.

First of all, regarding the range of new energy vehicles, such as BYD Han, Xiaopeng Motors, Weilai Automobile, including the more well-known Tesla electric vehicles, the current range has not reached 1,000 kilometers. The highest cruising range should also be in the range of 500-600. As far as the current technology is concerned, it is not yet possible to fully realize the mass production of pure electric models of more than 1,000 kilometers, and it will take two years at the earliest.

Secondly, the increase in battery life is nothing more than an increase in the capacity of the battery, but an increase in the capacity of the battery means adopting new technologies or increasing the size of the battery. Or is it more practical to add new technology, and recently started to research new technologies, and there has been some progress, but how can it be so easy to implement in the car?

In addition, a few minutes of charging can fully charge the car and get a high range, which requires a different direction. Do you choose to plug the car in both directions? Or do you want to increase the power of the charge?

Directly put two charging devices obviously does not meet the requirements of the future, can only make a breakthrough in technology, but the safety hazards and the consumption of the battery brought by this are still relatively large, and it is not possible to detect the possibility of realizing it in the near future, after all, even if it is fast charging now, it will take half an hour.

But the person in charge of the group is right, charging piles are indeed the primary problem encountered by electric vehicles at present. Some customers want to buy an electric car, but when you don't have a garage and parking space, and the nearest charging pile is a few kilometers away from home, it is obviously impossible for customers to choose an electric car. No one wants to spend too much time off work and take time to charge their car.

Just like gas stations, if there are more places to charge and charge faster, it is clear that electric vehicles will be more popular. Of course, at this stage, steady development is still needed, so now a lot of new energy high-tech talents are needed to jointly promote, and the salary of new energy vehicle maintenance will be relatively high in the future.

There may be harm to the phone, but it's generally fine.