I'm about to replace my motherboard too after the last bos update.

I don't know how Dell's laptops got the fame of very solid machines, my personal experience was pretty terrible.

I believe the fault lies in the Battery charger.

It may be supplying the wrong metric of energy to the Laptop.

Have you tried replacing the faulty laptop charger or the battery to prevent the motherboard from getting damaged?

Yes I have tried multiple different chargers as well as a second battery. I have even tried replacing the port to no avail unfortunately

Update:
The normal charging port still will not charge the battery, however it seems that the device is capable of being charged through USB - C! I will return with another update later but hopefully by just using a USB c charger from now on I will be able to continue to use my machine.

I am just now running into this exact same issue. I have replaced the dc port and can run the laptop only while it is plugged into ac and the battery is unplugged. As soon as the battery is plugged in the laptop turns off. The laptop will not charge I left it for more than 12 hours and still had 0%. I was hoping that could be something other than the motherboard as this laptop is only 3 years old. 
So you’re saying that the USB-C is charging the battery without you having to change the motherboard or did you also change the motherboard? Just trying to figure out what my next step will be.

I got my XPS 15 7590 for half year, and the motherboard got replaced as well.

Also I encountered the bitlocker recovery key issue. So after replacing the board, I even cannot use the computer. Then the service request was closed as the problem was thought fixed.

May I ask whether anyone else encountered the similar issue? 

Many thanks.

Basically the same problem here.

Wont ever buy dell again. Terrible laptops

Same exact problem here. It’s so frustrating on a 3 year old computer that was not exactly inexpensive. We bought the new battery, had the port fixed, and now have spent enough and would rather put our cash into a new computer than into a motherboard. Needless to say it won’t be a Dell. 

Hi...did you get a fix for this error? If so what? I have the same issue.

Thanks v much

Phil Moss

Same with my 2 yr old xps 15.  Dell, you REALLY have to fix this and make existing owners whole.  I love the Dell XPS format and it's the only machine that has kept me from the Apple dark side, but now that I have my second $2500 paperweight because of a very solveable power management problem I have to choose between the borg of Apple or a bland Lenovo..  I feel like I'm in a commercial from 1984.