Laptop battery shutdown without warning

This same thing happens to me! It's so freaking frustrating, because I specifically bought A Dell OEM battery in order to prevent issues like this.

When I plug in the battery, Dell's inhouse software recognises it as a certified part, healthy, et cetera.

However, occasionally the laptop will randomly shut down while in use, and I've also noticed that small notification about the critical level.

I'm not sure who to complain to - Dell, for not supporting their own OEM parts or pulling an Apple by forcing you to buy directly from them, or the OEM manufacturer for making a part that's faulty [the battery level being misread].