Input 100-120V-50/60Hz, 0.5A
Output 5V-3A/9V-2A/12V-1.5A
Input 200-240V, 50/60Hz, 0.7A
Output 5V-3A/9V-3A/12V-2.25A/20V-1.35A/11V-3A (Max)
I know what V, A, W are and that my charger is a 33W charger. How did they come to these conclusions? Please help
In: 1
USB (USB-C PD) chargers support a number of typical voltages, 5V, 9V, 12V(?), 20V. At each voltage they support a maximum current, typically 3A. The phone or other consumer picks what suits them.
This is how you get the watt rating. 5V×3A=15W. If your phone only accepts 5V, the max is 15W, because higher currents aren’t safe for cable.
The manufacture supports the standard volt + ampere combinations for maximum compatibility, up to the max power they can deliver.
Your charger is a bit weird with the 11V line, not standard and not common. All others are typical, capped at 33W.
You tagged this as physics, but there’s no scientific explanation. They are following an industry standard (partly), an arbitrary convention.
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