I included battery temps in mine to show you it's not throttling like that. The issue is we never see 45W, Samsung's 45W charger can output 45W but the phone will never pull that much power. I can throw mine on a block of ice and see but I know it won't matter that much (I guess I'll find out)Some brief observations using a Samsung 45w charger on my Note 10+ using a wall power meter.
From 5% battery to 20%, the power draw was 37w, so I suspect this to be doing 9V 4A. Then from here on to about 50% (where I gave up my test) the phone will continually modulate between 37W and 9W every 5-6% charge, with the 9W happening for about a minute. I suspect this to be thermals and during cool down its doing 9V 1A. I wish I had a power meter on the USB cable but unfortunately I don't.
So let's visit what my Samsung charger is to see if this makes sense... I have a EP-TA845 Travel Adaptor made in Vietnam. The included USB cable is marked 5A, so it should be good for 5Amp!
Here's the specs:
PDO: 5.0V - 3.0A, 9.0V - 3.0A, 15.0V - 3.0A, 20V - 2.25A
So it doesn't have any PDO for the 10V Note capability... So let's visit the PPS!
PPS: 3.3-11.0V - 4.05A, 3.3-16.0V - 2.8A, 3.3V-21.0V - 2.1A
The maximum capability the programmable power supply can possibly feed the phone is 11.0V 4.05A, but I suspect looking at my wall draw that it's likely doing 9V 4.05A give or take. There is no way the phone can command 4.5A at any voltage, let alone at 10V or even 9.
Is there another model charger out there perhaps that the Note needs to achieve the power draw?
I'm now keen to try charging ontop of an ice block to see if that aids in reducing the modulation