the 2A declaration on the cap may be the TOTAL output provided by the charge socket, so 1A + 1A.

I use an app/widget on my android phone called Ampere

https://play.google.com/store/apps/d...v.ampere&hl=en

you can setup a widget on the home screen that tells you what the present charging current is and also the discharge current is, very useful

you might want to make sure you have a quality usb cable too,

Dave