Can I use a USB C cable to charge my laptop even though my laptop has a real charging port? - Quora
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Charge Your Laptop on the Go with These USB-C Car Chargers - Dignited
Found a nice solution to charge my laptop with a USB-C charger even though its USB-C doesn't support charging. Minus 0.75 kg from the luggage weight, score! (more in the comments) :
Does USB-C Charge Faster Than USB? Here's What You Need to Know