Slow charging (7W) google pixel (4a). Which USB A-C cable to use?

[germandowski]

Hi everyone.

I bought a power bank which has an output power (USB-A - USB-C) of 12 and 18W for my pixel 4a.

If I understand correctly, with the Pixel the only way to have fast charging is through: USB C-C cable and "power delivery".

I would therefore exclude the possibility of using 18W but the problem is that I cannot go beyond 7W (5V, 1.4A) whatever cable (USB A-C) I use and this causes a really slow charging of the phone.

Is there a specific cable that allows me to go beyond 7W?

(not 18W ok, but a few W more ...)

NB: this slow charging also happens with all the chargers I have at home using the USB A - C cables I have, so it is not a defect of the power bank but a "problem" of the phone

 

[Rukbat]

It's not the cable. PD is different than Quick Charge, so the phone can't negotiate any more than a 5 Volt charge, and the charger is probably rated at 1.4A at 5V. To get a higher charge, the phone would have to negotiate a 9V charge, and it "speaks" PD, not QC, so it can't. (Standards are great - it's too bad we have so many different ones for the same subject.)

About all you can do is charge slowly or get a PD charger. (The cable is the same - a pair of wires for power and a pair for data.)