About the Pinebook - What to expect

[MarkHaysHarris777]

I just bought a couple of matching car adapters from AliExpress with 5V/3A and the barrel plug...

I'll be curious to know how you go... I dubious about stability of those small car converters, but then, again, I'm used to the power train from 1970/1980s vehicles, which would put the 10v to 40v that the automotive grade power regulators are supposed to handle to the test a times :-O (crazy wiring harnesses, long leads where they really weren't needed and trusty alternator livening things up, and zero power filtering... cigarette socket was exactly that... for cigarettes  

Me too;   That's why I always put a PI filter on mine;  the CPT converter works well (filtered).  It really comes down to what kind of ripple the converter has (also spikes, other spurious noise) and whether the PI filter is designed effectively to remove the ripple.  It also depends on the vehicle being used;  some vehicles are inherently noisier than others;  I had a Ford pickup (F150) a few years back that you could hear (from EFI) coming two blocks away;  its alternator was fierce!. My Chevy 1500 Silverado today is really pretty good; very quite.