QUOTE(sur90 @ Jun 12 2020, 01:50 PM)
I think it is related to a setting under the Battery. There is a setting "SMART CHARGE". You can try to turned it off.

Thanks. I already did that yesterday when I saw that it charged only 15% in 30 minutes or so.
Still have it turned off now. The only difference, is now I have the app AccuBattery installed (as someone else suggested). It may have something to do with the improvement, but I can't be sure.
Just for clarity, I installed the app after charging the phone for 2 hrs or so, yesterday. Used it a bit and install the app. Tried the charger, saw it was indeed feeding only around 2A, but I thought that it was because my phone was still relatively fully charged.
When I tried this morning, at 30 odd percent battery charge, the feed was a little over 4A (probably margin of error thing, I think it's actually 4A exact).
Counting all the time I plugged and tried various chargers (including my Lenovo Yoga720 charger, which normally gives a quick charge), this morning's charge was the seventh plug in. Not sure what to make of that.