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May 7th, 2025 11:19
The battery is discharging very low when is on the AC but is not charging
I have a question regarding my laptop. Let's say that I set up my battery to run on my battery within range 50-60%. When is on AC and reaches 60% in HWMonitor shows me that my laptop is on AC, not charging. The Dell Power Manager app says the same thing, plugged in, not charging.
Watching a movie within this range and my laptop is plugged in the battery is running low up to 50% in 1h and a half. If is not plugged in within the same range my battery is running low up to 50% in 45 minutes.
I don't understand why.
Thanks
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DELL-Jesse L
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May 13th, 2025 10:06
Update the to the current bios to see if that will resolve the issue.
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Alex_Adrian
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May 13th, 2025 10:24
@DELL-Jesse L
My laptop has the latest updated to the BIOS and the warranty status is expired
ejn63
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May 13th, 2025 14:00
What model system? And does the system recognize the AC adapter? F2 at powerup to check.
Alex_Adrian
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May 14th, 2025 06:18
It's a dell vostro 3490 bought in 2020. Yes, the AC adaptor is recognized.
(edited)
ejn63
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May 14th, 2025 10:19
Replace the battery.
Alex_Adrian
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May 14th, 2025 10:22
Yes, the battery is new
ejn63
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May 14th, 2025 10:34
OEM, or third party?
Alex_Adrian
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May 14th, 2025 10:41
It's OEM. I don't believe that the issue is with the battery. Fully charged, from 100% to 30%, the battery runs low in 3 hours. So it's ok. Maybe the whole behaviour is ok and now I've noticed that
ejn63
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May 14th, 2025 10:58
Does the system behave similarly when powered off and charging?
Alex_Adrian
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May 14th, 2025 11:13
What do you mean? If I checked how long it takes the battery to run low when the laptop is turned off?
I haven't checked
ejn63
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May 14th, 2025 12:40
No, the question is, does the battery charge from that percentage when the system is powered off?
Alex_Adrian
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May 14th, 2025 12:42
No, it doesn't charge
ejn63
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May 14th, 2025 12:43
That would be a hardware issue - if you know the battery and adapter are both OK, the problem is with the system board.
Alex_Adrian
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May 14th, 2025 12:46
Why do you think that? When the power is off and the AC adapter is plugged in, should the battery charge?
ejn63
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May 14th, 2025 12:48
It should. If it behaves the same way powered up or not, the problem is the mainboard charge circuit.