Thank you for the reply Csound1;
I understand but I would think that if the CPU/GPU were under heavy loads and the battery was charging I would expect to see close to 87 Watts output. I am seeing 60W max under heavy loads and I am also seeing the Battery Discharge (down to 4% before throttling back the CPU) under this condition over a few hours. However a friend of mine had this issue and it suddenly resolved, his AC Charger is outputting 85 Watts during the initial charge cycle, (as expected).
The AC Charger has a max output of 20.2V and 4.3 Amps making 86.86 Watts, (87 Watts). CPU/GPU loads aside, a depleted battery will consume higher loads for the initial 80% of the charge under Constant Current Mode before switching to Constant Voltage Mode in the last 20% of the charge cycle. The system reports the battery C at 6.774 Amp Hours (the Full Charge Capacity in mAh); so these batteries should be able to be charged at 1C or 6.774 Amps, well outside of the AC Charger's ability. So if a battery were depleted below 80% of the charge, (in the Constant Current range), the AC Adapter should be running full tilt to charge the battery; and then slow down for the last 20% of the charge (the constant voltage range).
Under Battery conditions I am seeing an average load of 1 to 2 Amps, (0.75 an amp with the screen very low, and the BT and WiFi off). Being very conservative a Battery Charge cycle of 0.3C or 2 Amps and a running system in the 1 1/2 Amp range would be about 70 Watts; well over the 60W I seem to be capped at.
My point is under a full CPU/GPU load and during the first 80% of the charge cycle the AC Charger should be outputting well over 60W. Wouldn't you agree?
Don't the 13 inch models use 60W with smaller batteries?
Thank you.