Thanks for elaborating, shopper.
And within the series ("Swift 3" in my case), I have no idea if a single model (here "SF314-51", I think) will consistently support USB-C charging of the laptop because an other model variant is said to do so.
I shelved an otherwise fine Yoga 3 Pro only because it had a proprietary USB-like charging system not allowing other chargers, hence not from DC.
Apparently, my trigger-finger was too fast this time too Image may be NSFW.
Clik here to view.
Instead buying from the pure business series wouldn't help me much.
Just needed to run a couple of technical apps with the highest possible USB3 speed, which is not easily found there.
I would also expect the environment to break a few laptops, so I really did not want to choose the most expensive series unless clear documentation of performance.
By the lack of any documentation I think we can say that these models are not officially supporting being charged by USB-C (PD).
The Norwegian Acer support hasn't even bothered answering me.
And I think the newer USB standards are just to complicated for the marketing guys - thinking USB PD is "someone else's problem".
I have reluctantly ordered an USB-C hub that is said to have proper PD-function. So I just need to order a 19V USB-C charger delivering enough current. Yes, maybe the Innergie to have as a reference.
