In case you ever run it from the battery, how is the power consumption?
Never run it from
battery: it has become just a backup for fast moves from room to room.
However, I have managed to get the processor get at 1Ghz when not under too much stress automatically (there is a switch which I do not recall, sorry).
I bought another MBPro in 2017 because I needed the power and the old one had become unreliable (shutdowns due to heat etc.) I use now the old one for home work and as a remote terminal. Could not be happier.