Ok so, I've got a 17" Aspire 5, when I put it under any sort of medium high load it just stops charging and show blinks the status LEDs which I suppose mean it get's in power safety mode. Only notable things I can see being an issue are my CSME firmware which isn't the one from Acer because the Acer one was a vulnerable version relative to the current firmware I have installed (latest for KabyLake / KabyLake Refresh), the PC being only able to supply 0.05W to the battery on load spikes, and the slightly loose power inlet.

I mostly suspect the latter but it seamingly started happening...