What is Qualcomm Quick Charge?

If you’re new to the concept of quick charging, the result is in the name: your smartphone charges up faster than it would without Quick Charge technology.

At its most simple level, Quick Charge allows for high levels of current to flow to the battery, in an attempt to maximise its charging efficiency. The latest Quick Charge products also tend to charge their batteries at higher voltages, allowing for a higher rate of power transfer through commonly found cables.

However, both the phone and the charger must be compatible with the same charging voltages and currents. Your phone may support charging at 9V/2A, but if you only have a 1A charger then the process will take longer. Likewise, plugging a 2A charger into a phone that can only accept 0.7A won’t make it charge any faster.

It is also possible to charge a compatible device quickly just by using a similarly high current charger, but non-certified products obviously aren’t guaranteed to work efficiency.

Quick Charge, like similar technologies from other companies, is designed to optimise power transfer in the early stages of charging, allowing users to unplug their devices with a suitable battery capacity after a short amount of time.

Qualcomm boasts that it can charge some devices up to 80 percent in just 35 minutes, but it’s very rare for the company to talk about total charge time, because it is simply less impressive. Power transfer in the latter stages of battery charging is much lower regardless of the charging tech used, hence why Quick Charge can boost your battery to 50 percent or more rather quickly, but will still take over an hour to fully charge your smartphone.

Resource : http://www.androidauthority.com/quick-charge-3-0-explained-643053/

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