Fast chargers can charge your phone or tablet in half the time thanks to a special power delivery protocol. Here’s how it decides how much power to deliver.
A study on mobile phone usage in the U.S. showed that Americans use their phones for an average of 5 hours and 16 minutes per day (via Harmony Healthcare IT). That kind of usage means battery drain, and charging it back up can take a few minutes for a small charge or one to two hours from zero to full when using a regular 10 or 18-watt charger. A quicker alternative is to use fast chargers (ranging from 18 watts to 65 watts), which can restore up to 60% of your battery in 30 minutes, and can provide the correct power level for the device using the power handshake protocol.
To ensure secure and efficient charging, a phone charger and a phone communicate through a process known as the power handshake. By communicating with the phone, the charger can identify the correct voltage and current the phone accepts, which protects it from damage by excessive power.
