What is Fast Charging?
Batteries are charged by the current delivered to them by the power source. Applying additional current at a set battery voltage results in more power, which can result in faster charging but also requires sturdier charging components that can withstand high power levels. Different amp specifications on different charging adapters alter the time it takes to charge your phone, but there’s a maximum limit to how much current can be pushed through.
Receiving devices, such as smartphones and tablets, include regulator circuits that will limit the charging current to prevent too much power dissipation and therefore potential damage. Charging sources, such as mains adapters, take mains power and convert it into a form that usually doesn’t exceed the maximum specifications of the device being charged. With smartphones, your adapter takes a high-voltage AC supply and converts it to 5 volts DC with a maximum amount of current draw.
Qualcomm’s Quick Charge 1.0 technology was designed to maximise charging efficiency for up to 10 watts of power, by allowing for a maximum current draw of 2 Amps through a standard USB adapter and port voltage of 5 volts. Quick Charge 2.0 allows for an even higher level of power transfer between your power source and smart device, up to a maximum of 36 watts in certain scenarios. Qualcomm splits its 2.0 technology into two classes, A and B. We’re most interested in Class A, which applies to smartphones, tablets, and other portable electronics.
The specifications for Class A allow for a maximum charging current of 3 Amps, depending on the source. Your typical smartphone charger will run at 5 volts, drawing 3A of current boosts Quick Charge 2.0 up to 15 watts of power. This means that you can draw more current from a traditional 5 volt USB supply, thereby speeding up the charging time.
Class A devices will also work with 5, 9, or 12 volt supplies and can therefore tolerate more power. The range of higher voltages means that a single charger can work with a wide range of devices and also ensures high quality performance by reducing the impact of any voltage losses that appear over long cable distances or poor quality cables.
Qualcomm’s Quick Charge 1.0 and 2.0 technologies are also backwards compatible with one another, meaning that you can use a 2.0 devices with a 1.0 supply, or a 1.0 device and 2.0 supply and get your 2 Amps. However, only a 2.0 device and compatible 2.0 charger will allow for 3 amps of current and higher power ratings.
#how_it_works?
Receiving devices, such as smartphones and tablets, include regulator circuits that will limit the charging current to prevent too much power dissipation and therefore potential damage. Charging sources, such as mains adapters, take mains power and convert it into a form that usually doesn’t exceed the maximum specifications of the device being charged. With smartphones, your adapter takes a high-voltage AC supply and converts it to 5 volts DC with a maximum amount of current draw.
Qualcomm’s Quick Charge 1.0 technology was designed to maximise charging efficiency for up to 10 watts of power, by allowing for a maximum current draw of 2 Amps through a standard USB adapter and port voltage of 5 volts. Quick Charge 2.0 allows for an even higher level of power transfer between your power source and smart device, up to a maximum of 36 watts in certain scenarios. Qualcomm splits its 2.0 technology into two classes, A and B. We’re most interested in Class A, which applies to smartphones, tablets, and other portable electronics.
The specifications for Class A allow for a maximum charging current of 3 Amps, depending on the source. Your typical smartphone charger will run at 5 volts, drawing 3A of current boosts Quick Charge 2.0 up to 15 watts of power. This means that you can draw more current from a traditional 5 volt USB supply, thereby speeding up the charging time.
Class A devices will also work with 5, 9, or 12 volt supplies and can therefore tolerate more power. The range of higher voltages means that a single charger can work with a wide range of devices and also ensures high quality performance by reducing the impact of any voltage losses that appear over long cable distances or poor quality cables.
Qualcomm’s Quick Charge 1.0 and 2.0 technologies are also backwards compatible with one another, meaning that you can use a 2.0 devices with a 1.0 supply, or a 1.0 device and 2.0 supply and get your 2 Amps. However, only a 2.0 device and compatible 2.0 charger will allow for 3 amps of current and higher power ratings.
#how_it_works?
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