Mobile fast charging

In the present modern technological era, most of the mobile phones are supporting fast charging and that charge the phones within a matter of minutes whereas earlier it used to take hours. The widespread adoption of fast charging in mobile phones increases its use. As mobile phone sizes are getting bigger each year, they need bigger batteries (high mAh) for long time operation. Without fast charging, we would have to wait hours for our phones to top up.

At the most basic level, fast charging is simply increasing the number of watts (W) that are delivered to a mobile battery. A general USB port sends 2.5 W to the connected device, and fast chargers raise this amount.

What is fast charging?

Mobile fast charging

Mobile fast charging

The output of a charger is measured in terms of current and voltage. Multiplying the value of output current and voltage gives you wattage, the measure of total power.

To enable fast charging in mobile chargers most of the manufacturers either boost the output current or vary the voltage to increase the amount of the potential energy or output power. The amount of fast charging standards typically varies the output voltage rather than boost the current.