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January 20th, 2025 11:08
Dell Latitude 7390 Battery Issue
Hi,
I have been experiencing a battery issue with my Dell Latitude 7390 laptop for over two years. Here are the details:
- The battery does not charge at all.
- The battery level indicator is missing from the top-right corner of the desktop/screen.
- The laptop only powers on when the AC adapter is plugged in.
- While the laptop is on, a light on the side flashes in the following sequence: one white flash followed by four orange flashes.
- When I check the battery information in the BIOS, I see the following message:
Can someone help me understand what might be wrong with the battery?
- Is the battery completely dead?
- Should I replace it, or is there any way to fix this issue?
Please note:
- The AC adapter I’m using is the original one that came with the laptop.
- The laptop has never been opened or serviced by anyone, including a technician.
I would greatly appreciate any advice or guidance on resolving this problem.
Thank you!
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ejn63
10 Elder
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28.6K Posts
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January 20th, 2025 12:04
AC adapter unknown mean the battery will not charge. Try another OEM Dell AC adapter first -- if it's recognized, the battery should charge. If it is also unrecognized, the second possibility is a bad DC jack. Replace that next.
https://www.parts-people.com/index.php?action=item&id=27949
One of those two should solve the problem.
ann_droid
2 Intern
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508 Posts
1
January 20th, 2025 11:28
Hi
I would consider a LIVE Linux, like linux Mint and run that for a few minutes to see if the battery is acknowledged (I assume you have run hardware tests already).
Is the power supply the original?
If in doubt please ask.
smaanan
1 Rookie
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3 Posts
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January 20th, 2025 12:53
Hi @ann_droid
I am already running Fedora Linux on my machine and the battery is never acknowledged:
Would it be necessary to run a live Linux distribution on a flash disk?
And yes, the charger is original, I received it with the laptop.
ejn63
10 Elder
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28.6K Posts
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January 20th, 2025 13:00
This is not a software/OS issue -- it's hardware.
smaanan
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January 20th, 2025 13:07
Hi @ejn63
A while ago my AC adapter has been overstretched and the wires have been exposed:
I wonder if this could be behind the problem.
I will try to obtain another OEM Dell AC adapter and see if this fixes the problem.
ejn63
10 Elder
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28.6K Posts
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January 20th, 2025 13:20
That could easily be the cause. Replace with a new OEM Dell adapter.
HedgeFundManager
2 Intern
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478 Posts
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January 20th, 2025 16:43
I suggest the Dell 130W USB charger, but this older machine uses a barrel connector, 130W is available for that as well
an adapter for USB-C to Dell barrel is available too
(edited)