Looking at the Specifications document for that system on support.dell.com, specifically the sections that mention the USB-C port, there’s no mention of support for charging. Typically the documentation and products pages of systems that support this say something like “supports system charging / DC-in” in the notes about the system’s USB-C port(s). So my guess is that the system doesn’t support this. I wouldn’t put a ton of faith in the compatibility list on the charger product page. Those lists often omit compatible systems or list incompatible systems. Also, the Specifications document mentions both 45W and 65W chargers for that system, probably depending on the options your system is configured with. I would check the wattage on the charger you received with your specific system. If it’s 65W, you’d need a 65W USB-C charger anyway. I actually have a Nekteck 65W USB-C charger I’m very happy with if you decide to test this yourself. I also bought a 10ft USB-C cable since the included 6ft cable was shorter than the total cord length of my system’s charger. If you want to do that too, make sure you get a USB-C cable rated for up to 5A / 100W, because otherwise it will only carry up to 60W.
I have recently purchased a Inspiron 13 7000 2in1 (7386) and have been attempting to get a 'straight answer' to if this can be charged through USB-C?
My thoughts after a lot of exchanges with Dell support is that nobody knows the answer. It just seems strange to me that some models even older ones can (7368 is quoted for Dell part 492-BBWZ 45w & 7389 for Dell part 492-BCBI 65w) but there does not seem to be any confirming answer when it comes to the 7386.