I was looking at my One Plus Warp charger and I saw that the output says 2A or 6A at 5V. What does this exactly mean?
Edit: I wanted to add some more info. When I charge my brother’s mi phone(screen displays fast charging when I use mi charger at 5V and 3A) from my charger it doesn’t show fast charging. So does the warp charger operate at 3A when it is charging the mi phone or at 2A?
In: Technology
Modern USB allows the device being charged and the charger to talk to one another, which they use to agree on how much power to deliver.
Those numbers list the power delivery modes supported by the charger. The ”=“ symbols actually means “Direct Current (DC)”, as opposed to “~” “Alternating Current (AC)”.
So when you plug your phone in the charger will advertise that it can provide 5V @ 2A (10Watts) _or_ 5V @ 6A (30W), and your phone will request the one it wants.
My laptop has a 96W USB Type-C charger which advertises the same power delivery as yours _and_ 15V @ 5A (75W) and 20V @ 4.8A (96W), and a few in between.
So you see, the USB Power Delivery specification allows a wide range. Your charger says which it supports. It’s options happen to both use 5V and are at the lower end of the range.
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