Pavilion 13-an0020tu USB Power Delivery question

[trenzterra]

Hi there,

I purchased today a HP Pavilion 13-an0020tu laptop. It was one of the few budget laptops I shortlisted as supporting Power Delivery over USB-C, as seen here: https://support.hp.com/sg-en/document/c06177230

I also looked up the user guide for this particular model and noted it supports USB-C charging at several compatible voltages, shown below:

I have with me an Aukey PB-Y3 Power Delivery charger which supports the following PD output:

• USB-C Output (PD): DC 5V 3A, 9V 2A, 12V 2A, 14.5V 2A, 20V 1.5A

Based on the above specs I should at least be able to pass power through at 5V 3A to the laptop. I have also used it successfully to charge a Lenovo IdeaPad 720s as well as a Dell  Latitude 7380 laptop.

However, for some reason, it seems that the Pavilion 13 will not charge through this power bank. Instead, the power bank gets charged by the laptop instead (which is the expected behaviour on a non-PD port). What am I missing?

I have searched online but there hasn't been much recent information regarding Power Delivery and HP laptops. I note that early Spectre laptops had issue being charged by power banks but it seemed as though they were rectified two years ago. I am beginning to suspect that this laptop does not support USB PD at all and if so, it is a big shame for publishing misleading specs...

[petkri]

Your power bank is not supporting PD protocol but only QC.