Only today have I realised that laptops will run slower if the power supply is not sufficient. If batt or the charger is too weak. And sometimes a charger slows the laptop the fuck down. Or even freezes it (for some reason) to halt.

I need a more powerful USB-C charger

I always thought laptops and charge controllers/batteries were tuned to ensure the power the device needs and disconnect the charging or leak energy from the battery if a charger is too weak. I stand corrected

Maybe laptop uses different energy profiles when having lower power. IIRC @antigermgerm also had some kinda strange issues due battery with low power?

yes they modulate system resources based on the power level

though if it's plugged in that should lift unless now technology has gotten retarded, which is pretty likely

if you remove the battery entirely it should go back to full power usage (since if it's a bug where the software is saying slow resources due to low battery, it won't be able to access the % on the battery therefore would not throttle)... but unfortunately you can't easily pop these things out, and then you still would need to charge it

Lenovo retards added a specific resistor in each charging cable that the laptop senses and refuses to charge with weaker power supplies altogether

@devRancid a way to guarantee a certain quality I guess. Not cool if you have "piekspanning'. That your electricity is not stable. My lights here often do flicker.

@retoor well, it's significantly slower in UEFI too. Initialization and POST are slower by magnitudes, grub menu loading - ... I'll put it this way: on batt grub menu pops up. On charger it's 'painted' on the screen top-to-bottom in ~1sec. The loaded OS is also much slower and more laggy.

It's worth mentioning that I observe this only when charging with my 40W usbc charger. No probs with a 100w barrel charger.

@devrancid
Since this discovery I'm actually glad they do that. Apparently, a too weak power supply can halt the system

@jestdotty

So my current laptop I bought another power supply with higher wattage rating. It runs very cool compared to the stock power supply.