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Cablecc USB 3.1 Type C USB-C to DC 20V 5.5 2.5mm & 2.1mm Power Plug PD Emulator Trigger Charge Cable for Laptop : Amazon.ca: Electronics
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) :