Is it possible to charge a smartphone, headphones or watches with a more powerful charge? Volta and ampers for “dummies
I often meet on the Internet the same issues related to charging gadgets. They sound something like this:
-My Bluetooth Hbiles went without a power supply in the kit, and the instructions say that they need to be charged from a computer USB-power with a capacity of 5V and 0.5A. What will happen if I connect a power supply to them at 5V and 2A? Will the headphones burn out?
If you also asked such questions, then most likely you found an answer that sounded something like this:
The device can be charged with any charging by 5 volts, regardless of the amount of amperes. It will not take more current than he needs.
Despite the fact that this is the correct answer, it does not satisfy many, since it is not entirely clear what the phrase “will not take more amperes than necessary”.
Does this mean that the power supply on 5V and 3a will force to “push” a lot of current into the unfortunate smartphone, but the smartphone will resist this, at times heated like a stove? Or maybe the whole thing is in the “smart” power supply, which will first “ask” the device how much ampere he needs, and then gives the corresponding current?
If we choose the first option, then somehow this prospect is not very pleasing. You begin to directly feel the pressure that the gadget experiences, resisting a strong current. It seems that sooner or later he will not stand it and will fail.
And if you choose the second option, then there is a doubt-is it really my charge is smart enough and whether it will find out something with the device? And if she is stupid or my device “does not speak” in her language and then she simply begins to push 3 ampers of current?
In fact, no matter what of these options you choose, this performance will be incorrect. In reality, from a power supply to a USB cable, it simply will not go more than current (more amperes) than you need a smartphone, watch or headphones. And it’s not about the smart power supply, but in the laws of nature.
Actually, I would like to tell you more about this in order not only to give a short answer and leave doubts, but to explain at the fundamental level, which really happens when we connect a more powerful power supply than the one for which our device is designed.
How fast charging works?
Modern smartphones install lithium-ion batteries. It is already impossible to increase the working time of such batteries, but you can speed up the charging process. Fast charging technologies optimize it in two ways:
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Many companies are developing their own fast charging protocols, but Qualcomm technology called Quick Charge has received universal recognition. Quick Charge can be used with HTC, LG, Nokia, Xiaomi and other Android smartphones. Simply put, it works on all phones that are equipped with Qualcomm processors.
Technologies such as OnePlus Dash Charge, Huawei Super Charge, Samsung Adaptive Fast Charge and Motorola Turbo Charge are based on Quick Charge from Qualcomm or compatible with it.
What is a real fast exercise
Fast charging. where currents are 2 C or more. And there are areas where it has long been not news. For example, in the same power tool. Bosch and other manufacturers for 6-7 years now offer itals, charging batteries of 3000 mAh in 35 minutes (20 minutes to 80%). It seems to me, except for high currents in the first phase, such a time is achieved by reducing the second phase of the CV charge. As a result, the batteries gain only ~ 90-95% of the nominal capacity, but you do not wait until you turn blue.
Is SUPER FAST charging BAD for your phone?
Here, for example, the species of Samsung “cans” 18650, working in such modes:
For a capacity of 2000 mAh, the maximum charge current of 4 A is indicated, which is 2 s. And the maximum charge time is 50 minutes. Why not 30 minutes? Let me remind you that charging Li-Ion batteries consists of two phases. On the first phase, a current restriction is set. As the battery is saturated and the maximum regulated voltage value is achieved, the process goes into the recharge phase on which the voltage is fixed, and the current gradually drops. This is how this process can be portrayed for 1 s mode:
For 2 C the schedule will look similar, but will get cleared up in time. Plus, different batteries can have different characteristics, and the CV phase (with constant voltage) can begin at different levels of accumulated charge.
So when you are told about a steep fast charging, which in fact operates with currents up to 1 s (and on the market you can count models capable of more on the fingers), just know that in other areas it was twice as steep years ago.
Question: Is it useful every time to discharge the phone “to zero”?
It is such a scenario of use that is the most harmful for the lithium-ion battery. Do not allow the drop in the charge below 20% and more often recharge your phone. Otherwise the wear of the battery will accelerate. It is best to maintain a charge of 40-80%. You will not do any harm to the battery, charging it 2-3 times a day.
Once again I would like to emphasize this idea. it is better to put your smartphone for charging more often than to wait for its full discharge.
What charging to choose for the phone
Study the specification of the charger so that the phone is charged correctly
I would like to summarize the use of chargers for phones. How to be?
- The smartphone can be safely charged with any adapter.
- A more powerful charging adapter will not spoil the phone.
- A powerful adapter will live longer if your smartphone needs less energy for charging.
- Branded fast charging technologies can be incompatible with accessories from other smartphones.
In any case, you can charge different devices with one charging. It is best to use analogues from third.party manufacturers. But always pay attention to the quality of the accessory and try not to use too cheap chargers.
The function of tracking the location in the smartphone has long become the subject of a large discussion. With the introduction of the function of a mandatory request for resolving access to geolocation in certain applications, users increasingly began to ask the question: is it worth it to include it at all? Here, the owners of smartphones were divided into two large categories: some completely turn off all such functionality, others simply do not pay attention to tracking. Today I propose to figure out which of them is right and once and for all put an end to this issue.
For a year now, manufacturers of smartphones are actively introducing 5G modems into their devices, adding to the name of the device “5G”. These two symbols instantly make any smartphone relevant and modern. It is worth adding that during the time, while the fifth-generation networks appeared in other countries, the 5G scartphones managed not only to cheaper: many budget smartphones support 5G and this is the norm. It is a pity that there is no point in acquiring such devices in Russia yet. In fact, it is surprising that in our country the 4th generation networks are so well developed, but at the same time 5G did not appear with everyone. In today’s material we will figure out: when 5G will appear in Russia, which is 5G better than 4G and how 5G is able to make our life better than ever.
Recently, our telegram chat is literally torn from users’ messages who cannot pay for subscriptions and download applications of VTB-type suicide banks, which are more unavailable in the Google company store. Alas, every day of applications that have fallen under restrictions are becoming more and more. There is only one way out. Search for the Google Play alternative or download programs from external sources. However, everything should change very soon, Russia announced a domestic application store for Android Nashstore. According to sources, he should appear already in May 9, 2022.
Is it possible to charge a smartphone with non.original charging?
Most often you can. The compatibility of the smartphone and charging does not depend on whether it has been produced by the same company as the smartphone itself. And if your phone supports wireless charging, then the manufacturer himself ordered him to charge from devices of other companies. Because the standard of wireless charging Qi is open and publicly accessible and charging devices using this technology can be released by anyone. Read our material about wireless charging to find out the details.
With wired charges, in fact, the same thing. everything is regulated by standards. There is nothing wrong if you charge the iPhone cable Lightning from an uncertified manufacturer. Of course, you will see the inscription on the screen “This cable or accessory is not certified”, and the smartphone may refuse to charge, but this is usually treated with a shutdown and re.connection of the cable. But such cables are ten times cheaper than the original, but at the same time they often suffer from the quality of performance (although much has already been said about the quality of isolation of the original Lightning cable).
If you want apple deductions from buying a cable, you can buy a cable from a certified manufacturer: they usually cost cheaper than the original, but more expensive than a Chinese know-nome. In this case, unpleasant inscriptions will definitely not appear. With charging from the iPad. the same. Yes, and Samsung smartphone can be charged with an adapter and cable from Huawei. Or NONONEMED USB cable from PC. Why. read below.
Is it possible to charge a regular phone with fast charging
Modern smartphones are equipped with large capacity lithium batteries with Quick Charge function. it provides powerful charging in a few minutes. However, RIA Novosti, 22.03.2021
Moscow, Sep 26. RIA Novosti, Kirill Karimov. Modern smartphones are equipped with large capacity lithium batteries with Quick Charge function. it provides powerful charging in a few minutes. However, the battery life is reduced. How to use this new technology correctly so that the device lasts longer. in the material of RIA Novosti. A little theory of long time, mobile phone manufacturers produced charging devices (ZU) and connectors for them, guided by their own needs. There was no single standard, compatibility too. By the end of the zero, the USB Battle Charging standard was developed, which was the first attempt to create universal charging for gadgets with increased energy consumption. They took the microUSB connector as the basis, it can still be found in many devices. Now USB Type-C is increasingly being used.The next step is the USB Power Delivery (PD) standard. Already in the first revision, which appeared in 2012, the developers achieved throughput in a hundred watts. However, the commercial versions of the devices gave an order of magnitude less power, worked with a voltage of five volts and a current force of two amperes. At the same time, manufacturers of “iron” gadgets worked on the standard of fast charging. The pioneer was California Qualcomm with the Quick Charge technology integrated into branded chipsets. The latest version 5, presented in July, promises fantastic results-charging batteries for 4500 milliamps-hour in just 15 minutes. Commercial samples do not know how so far.Smartphone manufacturers have also created many standards of fast charging, which are far from all compatible with each other. And this problem. a comprehensive power supply forgotten at home will actually deprive you of this useful function, but there are exceptions. For example, the technology of fast charging from Apple is based on the PD protocol, and the latest versions of Quick Charge are complete compatible with “apple” products. Today, some smartphones are able to make up for the battery capacity literally before our eyes. The BBK Chinese corporation was especially successful in this, creating Supervooc 2 power supply.0 with a power of 65 watts. A compatible smartphone is completely infected in 35 minutes. But this is a proprietary technology. such speed can only be obtained with a complete memory and a special wire.And what’s in practice?Fast charging was conceived as the most safe for the battery and smartphone, and therefore the user. But in practice, everything turned out to be not so simple.Whatever the technology is called, the principle of operation boils down to an increase in current and voltage strength, which are given by the very watts that cause pride in gadget manufacturers. But if you exceed a safe threshold, the battery may explode. Therefore, any charging has “brains”-a microcircuit-controller that determines how much current-collapse and at what point the battery should get. The controller is integrated into the motherboard of a smartphone. “Power without control will inevitably lead to overheating, so modern chargers are not only powerful, but also” smart “: they interact with a smartphone on a special protocol, constantly monitoring the condition, heating and degree of battery charge, and on the basis of these indicators regulate the output power, changing the voltage and current strength, ”says Alexey Gribovsky, general manager of the federal chain of stores of electronics and household appliances of Pocetronics The power supply units gives the largest power with an almost completely discharged battery, so the developers of fast charging standards mainly evaluate the effectiveness of the charge time of the first 50 percent of the battery “.But the user often manages to get around all the protective barriers and the smartest smartphone. The human factor in the case of problems with fast charging. the main.“One of the main reasons for the accelerated degradation of the battery is when the owner of the device when using fast charging leaves the phone in the case or completely removes under the pillow at night, which causes overheating and brings closer the moment of the battery,” said Vadim Bolshakov, head of the department of Atonon Yes, and the understanding that you can completely charge the phone in an hour, contributes to its more active use and, as a result, more frequent charging, which again negatively affects the battery. The key danger of fast charging is a decrease in the battery life and, with a high degree of probability, buying a new gadget “.Rules for charging smartphone heating inherent in fast charging, nevertheless, reduces the already final resource of the lithium battery. And if earlier she degraded in 1.5-2 years, then with regular fast charging, the container can fall much earlier.“Fast charging implies shorter cycles and more heating, which negatively affects the battery,” says the head of Hi-Tech Dmitry Ryabinin According to studies, 40 watts charging reduces the battery capacity by 30 percent over the same period of time during which the charging of 15 watts would reduce the capacity of ten percent “. To somehow compensate for inevitable losses, the developers adhere to a cunning algorithm. The process is divided into two stages. On the first, the smartphone receives maximum power in the minimum time. For example, one of the Oppo models will charge 40 percent in ten minutes. But the last 30-40 percent in any fast charging is the longest, they take even more time.But you can independently extend the life of the smartphone battery, adhering to very simple rules. For example, to prevent a discharge below ten percent-lithium and lithium-polymer batteries do not tolerate a deep discharge, because of it the battery resource falls.The second rule is even more important than the first, especially for quick charging. use only the original memory or high.quality analogues. You can avoid many problems with the battery if you do not stick a smartphone into an incomprehensible power supply bought for 200 at the underpass.How the battery does not like the battery in “zero”, so he will not thank you for a long connection to the network at one hundred percent. In general, it is believed that to achieve the maximum resource, it is worth charging a battery no higher than 80 percent.Lithium batteries do not tolerate extreme temperatures. No wonder during a conversation in winter they sit faster. Problems may arise due to the impatience of the user. For example, when he launches the game on a smartphone, which is on fast charging. At such a moment, the device experiences a double load.However, even if you adhere to all the rules, it will not insure the battery or charger from the marriage of the battery. Recall at least a scandal with Samsung Galaxy Note 7, when there were many fires, smokes and overheating of the phone, which is why the Koreans had to hastily withdraw the device from production in 2016. And this summer-autumn users Google Pixel 3 and 4 began to complain about bloating batteries, which literally tears off the rear panel.
Are charges more powerful than 100 watts
Until recently, charging with a capacity of above 100 W could only be bought at your own peril and risk. We are talking about those who could give out such a value through one port.
In May of this year, USB developers have finally updated the Power Delivery and Type-C specifications to provide exercise from 100 to 240 watts for more energy-intensive devices, such as gaming laptops. But with such high power, you should still be careful. At least for now.
It takes time to design, build, test, certify, and then manufacture the Power Delivery charger or external battery. Three months that have passed since the appearance of a new format is clearly not enough. The appearance of safe and reliable devices should be expected no earlier than 2022. You can even assume that they will become massive after CES 2022.
The nearest CES can please us with really quick charges. Here are just phones with them will have to wait a little longer.
For charging at such a high speed, both charger, and the loaded must maintain the appropriate standard. Otherwise, you can damage the components inside your laptop or phone. It will take even more time to introduce new technology in the model of laptops and phones than to appear the first food adapters. So, while manufacturers of accessories are not interested in new production.
Many people are needed by chargers. Especially now, when smartphones are increasingly produced without them in the kit. There are dozens of good chargers with Power Delivery and even external batteries on the market. The main thing is to choose your own and decide on the requirements for it. Well, it is desirable not to save on this purchase. Especially if you want to charge an expensive gadget. You can spoil it for one charge only with frank self.firing. But constant voltage surges and irregular currents can lead to the phrase “something battery began to quickly sit” it will sound from you much earlier. But you can damage not only the battery, but also its controller. the symptoms will be the same.