When the mobile phone is charging while playing, does the power consumed come from the battery or the charger?

Let’s first take a look at the battery usage when charging. When the phone is charging, the current from the charger will be divided into two parts. Most of the battery will be supplied to help the battery to be stored. The other part will be supplied to the phone’s motherboard. Meet the needs of the phone to do other work. If it is used while charging, the current supplied to the main board of the mobile phone will increase, and accordingly, the current supplied to the battery will be reduced.


Since the battery can only be in the one-way working state, either charging or discharging, it is impossible to output power while inputting the power. At this time, it depends on the power of the charger.

If the power of the charger is very high, it can bring a huge current, so if the mobile phone is used while charging, the battery will always be stored, that is, the power is always increasing; but if the power of the charger is very low, or The quality of the data cable is not good, and the power consumption of the mobile phone is very large, so the power from the charger will be in short supply. How to do it? At this time, it is necessary to use the battery storage power.


Therefore, when the power of the charger is high enough, the mobile phone can still be charged when it is used, but the charging time will be longer; when the power of the charger is not high, the charger can not only charge the mobile phone but also need to be powered by the battery. The mobile phone will be charged less and less.

This latter situation is very common in the past, but with the popularity of fast charging, the power of the charger is very high, so the current mobile phone can basically meet the charging while using.


However, because the charger charges the battery, in the process of converting electrical energy into chemical energy storage, heat is generated due to loss; at the same time, the mobile phone generates heat when it is operated under high load, so the mobile phone will appear hot.

So the conclusion is that the phone is used while charging, and the power consumed comes from the charger. Unless your charger has low power or poor data quality, you will need the battery to supply power.


In addition, although the mobile phone can be fully charged while using it, the heat generated in this process will damage the battery and reduce the battery life; there are also uncertain risk factors such as an explosion.

Therefore, it is recommended that everyone use the mobile phone reasonably. Not only does the mobile phone need to replenish energy, but the person himself needs to rest. The mobile phone will also produce health problems such as cervical spondylosis and myopia.

What is the fast charge mode?

Mobile phone manufacturers are limited by the size of their mobile phones and their battery capacity is limited, so they began to turn their attention to fast charging. Fast charging is a technology that increases the charging power of mobile phones within a reasonable range and aims to quickly replenish most of the power for mobile phones. The charging power is equal to the current multiplied by the voltage. There are currently two solutions that can increase the charging power, high voltage, small current and low voltage and high current.

For example, the process of charging a mobile phone is like a process of dripping a mineral water bottle with a hole in the bottle. To speed up, first squeeze the water bottle to make the water flow faster, which is the high voltage and small current. The second is to tie another hole. At the same time, the water flow doubles. This is the low voltage and high current.

High voltage and small current

In 2013, Qualcomm introduced the Quick Charge 1.0 standard to increase the charging efficiency by increasing the input current, allowing the handset equipped with the Snapdragon 600 processor to support 5V/2A”/charging. However, due to the limitations of the micro USB interface, the input current should not be too large, so Quick Charge 2.0/3.0 can increase the power by increasing the supply voltage, which can achieve 9V/2A. In 2016, Qualcomm introduced the Quick Charge 4.0 standard, which is said to support the optimal voltage intelligent negotiation algorithm to provide the most suitable charging voltage for the battery. In addition to Qualcomm, MediaTek’s Pump Express Plus 1.0/2.0, Samsung’s Fast Charge, and Meizu’s charge 3.0 also use this high-voltage, low-current solution.

Low voltage and high current

Remember to charge for five minutes and talk for two hours? In 2014, OPPO introduced VOOC flash charging technology with a charging power of 22W. VOOC flash charging is a typical low-voltage and high-current solution, but as mentioned earlier, the micro USB interface will limit the current, so OPPO has customized the charger and charging cable, and even the internal circuit of the mobile phone has been modified to support 5V/4A. At present, OPPO’s dual-cell SuperVOOC super flash charging has a maximum charging power of nearly 50W and can charge 40% in 10 minutes. Also using this solution is Huawei SuperCharge Super Fast Charge, plus DASH Flash Charger.

Most Android phones that support fast charge will be equipped with a fast charge charger. There are exceptions, of course, so don’t ignore the accessories when buying the product. Be sure to look at the voltage and current requirements above.

High-voltage small current and low-voltage high-current are all in order to solve the charging problem, and there are differences due to different solutions to the micro USB problem. But now it is progressing, becoming smarter and safer, and micro USB is now undergoing changes, and mobile phone charging will become more and more perfect in the future. But now, you can turn on the “power saving mode” or choose the right fast charge charger to speed up.