How Does Fast/Quick Charging Work? [QUICK CHARGING EXPLAINED] (SuperVooc, OnePlus, Samsung, Apple, Qualcomm)
If you’re a TechHead you’ve probably heard about the term Fast Charging at least once in the past few years and if you’re just getting into tech, you’re probably wondering what it is. Well, That’s what this video is for. Welcome to Brainy Tech, and This Is How Fast Charging Works.
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WHAT YOU NEED TO KNOW :
Quick/Fast chargers will fill your battery with juice in less time than the standard charger that probably came with your phone. That’s what makes them different and why so many people decide to use them over their standard charger. A Faster charging time and therefore a shorter wait for a full battery.
Your phone includes a built-in regulator to prevent pumping too much power into the battery and frying it. So, how fast your phone can charge is limited by what its internal regulators allow. This of course is affected by the charger your using to charge your smartphone. For example, Your charger, may put out 2.0 amps at 3V but a typical USB 2.0 port will charge at 0.5 amps. So a USB port will charge it more slowly than the charger that came with your device. Even without branded “quick chargers”, some chargers can fill your battery faster than others.
The charge controller in your smartphone protects against dangerous spikes in current. This controller chip regulates the overall flow of electricity into and out of the battery. Lithium-ion controllers define the current (in amps) at which the battery charges by measuring the battery’s cell current and voltage, and then adjusting the current flowing in. Some use a DC to DC converter to change the input voltage, and fancier integrated circuits adjust the resistance between the charger input and the battery terminal to ramp the current flow up or down.
Now that we have the basics down, let’s talk a bit about how fast charging works.
Many USB 3.1/USB C devices take advantage of the USB Power Delivery (USB-PD) specification, which has a maximum power output of 20V/5A (100W). Smartphones don’t regularly draw that much power, so therefore manufacturers commonly use a lower amperage (like 3A).
Fast charging standards like Qualcomm’s Quick Charge and Samsung’s Adaptive Fast Charging purposely exceed the USB spec’s voltage parameters, that’s why your phone is able to recharge in minutes, rather than hours.
There are also a many promising quick charge standards such as Apple’s Quick Charge, Samsung’s Quick Charge, Qualcomm’s Quick Charge 1.0-4.0,Oppo’s Super VOOC Flash Charge, OnePlus Dash Charging and Huawei SuperCharge, which all run on the same concept as the rest, Just with varying charging speeds.
One thing to keep in mind though is that with quick charging more heat is generated during the charging process. The more power you push through a device, the more stress it puts on a battery and the more heat it will eventually generate. While Quick Charge devices are built to be safe, they can still get quite hot.
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