Mine is exactly the same - it's pretty useless. I can't believe a laptop battery can last such a short time.
Dell XPS 2in1 2019 - 32gb I7
The XPS 13 7390 2-in-1salespage in the * by, "Work or play all day", states =
"Actual battery life may be significantly less than the test results and varies depending on product configuration and use, software, usage, operating conditions, power management settings and other factors. Maximum battery life will decrease with time."