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Dell XPS 15 7590, released in 2019.

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Will not run on battery power. Only when plugged in.

I have a bit of an odd issue...

Issue:

This laptop will only run when plugged into the wall. When power is removed, it immediately shuts off and will not power back on until plugged back into a wall outlet. When plugged in and powered on, the battery is detected and there is no indication of an issue. I can even run the built-in diagnostics and it returns a clean result, zero issues...

Additionally, when left unplugged for a few minutes or more, then plugged in and powered on, it boots as if all power has been removed, including the BIOS battery. I.e. very slow POST and the BIOS needs to be reconfigured.

What Started the Issue:

I purchased a refurbished Dell dock for a customer. To test the dock before delivering, I plugged it into this laptop. When I plugged it in, the laptop flickered a few times and then went dead and would not power on. So I started troubleshooting...

  1. Removed the dock cable from the laptop and hit the power button. Nothing.
  2. Connected my Dell wall charger and hit the power button.
    1. The laptop powered up as if previously fully depowered (slow POST and BIOS reconfig required).
  3. Once powered up and logged in, i checked the battery status.
    1. Batter showed present, partially charged, and charging.
    2. No errors or indication of an issue.
  4. The wall charger was then removed to check if the laptop would run on battery power.
    1. It immediately powered off and would not power on again.
  5. The wall charger was reconnected and the laptop powered up.
  6. Power was connected until the battery showed 100%.
  7. Battery power was then retested with the same result.
  8. A full run of the internal, pre-boot diagnostics did not show any errors or issue.

Any thoughts, ideas, or additional troubleshooting steps to attempt?

Thank you for any help you may be able to provide...

-Jeremy

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I'm strongly leaning toward your battery having reached the end of its life. Batteries, of course, rely on chemical reactions to generate electricity, and over time the chemicals used degrade and can no longer hold a charge. Think of your battery as a jar. You fill the jar with water up to 100%, just as you charge the battery to 100%. However, each time you fill the jar, you add a marble. One marble doesn't make much difference, but over time, the marbles eventually fill up the jar. Now you fill the jar with water, but the amount of water you can put in (the amount of charge the battery can hold) is only a fraction of what it was when it was new. So even though it's fully charged, when you start using it, it drains immediately.

If would be worth your time to do some troubleshooting first, but I think you'll have to replace the battery. The fact that you keep having to reenter the CMOS settings tells me the battery is so low that it can't even maintain those - and they take a microscopic amount of power (your laptop doesn't have a separate CMOS battery; it relies on the main battery always having at least a minimal amount of power).

That all being said, go through the iFixit troubleshooting page for your laptop and see what you find. In particular you'll want to run the battery diagnostics using Dell's SupportAssistant software as described.

Dell Laptop Battery Draining Fast - iFixit Troubleshooting

Good luck and be sure to come back and let us know what you find; your experience will help the next person who comes along with the same problem. And if you end up needing to replace the battery, we can probably help find you a guide to that repair or help figure out your next steps, depending what your results are.

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A quick new item to add to my list of troubleshooting...

I have not needed that laptop in a few weeks. So it sat, unplugged, for that amount of time.

I plugged it in, hit the power button then F2 to get into the BIOS setup screen. Once in BIOS, I opened the "Battery Information" page.

Battery Charge: 0%

Battery Health: Good

AC Adapter: 130W

It has been sitting at that screen for ~30-40 mins. In that time the battery charge has increased to 40% and is still showing a health of "good".

I'll let it fully charge, then power up and run some battery tests. I'll run the SupportAssist tests first and then test pulling AC power. Maybe it needed to fully discharge and recharge to clear the issue.?

I'll report back!

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JEREMY C wird auf ewig dankbar sein.
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