As long as the charger provides the rated power output, yes.  
I've just received my new laptop and it has arrived with a 65W USB C charger. There is no dedicated charging port, so the only way to charge it is through one of the USB C ports. My question is, can I slim down the amount of cables I have to carry around with me? Can I get a cable to charge my laptop from a generic USB C charger or even a power bank? It seems a bit silly that I have to use the Dell one as it's another cable to carry around and it takes up one of my USB C ports.
USB C charging - Inspiron 14 7425 2in1