Timestamps : 0:00 Introduction 0:53 Basics of the Li-ion Battery Charging 4:40 Smartphone charging in early generation phones 7:10 High Voltage fast charging and Qualcomm's Quick Charge Technology 9:28 Fast Charging with USB- Power Delivery 12:21 Oppo’s Super VOOC fast charging Explained (High Current Fast Charging)
My 1st visit to ur channel sir...i am impressed..as a viewer i should suggest u that u should open a hindi channel also...it will be more venificial for u sir..so that hindi audience will attract to ur channel 😁😁😁
Very nice video!! I guess one thing to takeaway we can't interchange the chargers and cables from different companies. Basic charging might work but this adaptive stuff would not!
The videos you do are a great source of knowledge brother Brother I would like to help you by supporting you in gathering information if you are feeling it difficult to gather and manage information I will like to be a helping hand ☺
Very intricate and detailed... Loved it! Other videos on RU-vid about fast changing were childish and very basic. Keep making such good videos. We need you man.
Do you have a specific video on charge pump ? BTW it was such an amazing video i cant event tell you ! Just loved the content . Like this was something which i was looking for throughout the whole internet.
At 13:38 you mentioned that , in the lastest 125 Watt charging they are supplying 20v 6.25A of current , now the charge pumps are inside the phone right and then they convert that 20v to 10v 12.5A then how can you say that most of the circuit is outside the phone , wherein the actual increment in the charging current is happening inside the phone itself , which should make the phone hot . And if you say that the current is being increased by the charger then at the end of the day how the cable is able to carry that high of a current .
Finally, a comprehensive video on the topic of different fast-charging protocols. Other videos are either too elementary or just a sales pitch from a charger or smart phone manufacturer. Well done, sir!
I would like to know more, specifically about the simple things, their purpose and their usage. This was Informative but not well organized. It's lacking some... concepts, or meaning of other things. BUT I will search about it anyways. goof vid
Which lithium battery type is best for long range and long battery life? NMC(INR chemistry, eg: Samsung INR 35E) or NCA(NCR chemistry, eg: Panasonic NCR 18650B). I'm a teen DIY enthusiast and have immense taste for electronics but I have no idea about such electro-chemistry. I read long articles claiming the Panasonic battery is also used by tesla and its cycle life would increase if the battery is kept between 70%-30% charge. Is this thing true for all lithium ion battery or is it only for the Panasonic, because other than a good capacity battery I also want long life. On the other hand, Samsung is base on NMC technology which is recommended for Powerwalls and due to their high discharge capacity people also use it for DIY batteries. Please help me out, I'm searching for an answer from a long time. Its a humble request please reply. Although whatever I said was not related to smartphones but EV's to be exact.
sir in case of USB 2.0 if the signal pins are shorted to increase the current but in return path means in ground still have same wire so how ground wire withstand on that current level??
Data is transmitted on D+ and D- using differential signaling. Power is provided through Vbus and ground. In DCP port (USB BC 1.2), D+ and D- are shorted. They are separate from ground pin. (Because as I said, data is transmitted using differential signaling) I hope it will clear your doubt.
Awesome video dude, you deserve more views... I have one question... I have oneplus 8T, and has the 65W technology you mentioned in the video... The 10V are divided by 2 between both batteries. If u charge my smartphone with 5V/2A charger, how the system works? Charges one battery and then the other one ?
It depends on the Processor. It has nothing to do with the speed of the processor. If you see an older processor, they won't support Q.Charge 4.0. But the new ones at least support Q.C 3.0 or USB-PD. Some companies use their propriety technology with the same processor. The thing is, although processors support some fast charging tech provided by chipmakers, OEM needs to enable that fast charging chip inside it by paying extra money to chipmaker (Qualcomm or Mediatek). Otherwise, even after using the same processor, one may not get the fast charging. I hope it will help you.
As I mentioned, there are two phases of charging. In constant current mode, the battery is charged by constant current by the charger IC. During this time, the voltage across the battery gradually increases. Once the battery voltage reaches, some predetermined voltage level (near the maximum charging voltage of the battery), the charging IC switches to constant voltage mode, where it tries to maintain the voltage across the battery and current reduces. I hope it will clear your doubt.
The one reason is while charging, some of the power will get dissipated in the form of heat. But now a days, most of the phones and the charging IC keep the temperature under check. While charging, if phone is being used then it may increase the phone temperature. Or perhaps if some background activities are going on then it may also cause the heating problem.
You might have heard that it affects the battery life in longer run. But not really. It can affect the battery life at some extent but there are many other factors which may degrade the battery life. Like temperature and the charging voltage ( full charging voltage). But day by day, because of improvement in battery management system, it can be taken care. On an average modern smartphone batteries last 400-500 charging cycles ( 0 to 100% charging and discharging) before battery capacity reduces to 80%. That's typically 1.5 to 2 years for average user. And with fast charging when batteries can be charged in 15-20 mins ( 50-60%), it's not major issue.
