I have a Dell Inspiron 14 (5482) 2-in-1.
My laptop is a few years old, and has its original battery. I know that the battery capacity has degraded a bit, but it otherwise functions fine and I use it daily.
Very occasionally, I will be using my laptop on battery power (performing light duty tasks like word processing or internet searching) and it will just suddenly go black and become unresponsive. The only way to turn it back on is to plug it back in, and it still shows that I have plenty of battery life left. After turning it back on, I can unplug it and continue using it on battery power.
I assume that many people will suggest a new battery, but does anyone have any other insight on this issue?