Is it bad if the charging cable from the laptop is constantly rolled up?
No it's not like that I've been doing for many years. Nothing happens there
Yes. Your cable could get too cold. Sometimes you want to curl up.
When the cable is rolled up, it is unnecessarily stressed, which could damage the cable more quickly. But don't worry about it.
Agree
Which laptop do you have. So which brand
Which opinion
Of the other comment, so it's not really bad
It depends on how you wrap it.
How did you want to wrap it or how not? Do you have an example?
Nogo:
Wrap tightly around the power supply → can result in a broken cable or the strain relief / kink protection are too stressed.
How to do it right:
"Roll loose" together and loosely fix with a Velcro cable tie. So that it does not roll out by itself but just loosely enough that there's no cable break.
Very tight, larger loops…
From Apple: Mac