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Post by risman on Jul 14, 2020 13:35:13 GMT -5
I recently replaced the battery in my Dell XPS 13 9350 laptop. Periodically, even when it’s been plugged in for some time, the battery indicator shows 0% remaining, says “Your battery is very low,” and warns of an impending shutdown. But when I check the battery status using powercfg /batteryreport in Power Shell, it shows the battery to be fully charged and fine. If I shut down and restart (sometimes I have to do this more than one time) the battery indicator shows fully charged again. Any idea as to what is causing this/how to fix it?
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Post by Jack Teems on Jul 14, 2020 16:46:43 GMT -5
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Post by risman on Jul 15, 2020 10:20:31 GMT -5
I had already tried everything in there except Uninstall and reinstall Microsoft ACPI Battery driver, which I just did. So we'll see if that does anything. Problem isn't with battery charging or staying charged. It's just that indicator coming up falsely. Stay tuned.
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Post by risman on Jul 16, 2020 11:33:10 GMT -5
Still exhibiting this behavior.
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Post by risman on Jul 26, 2020 12:08:14 GMT -5
This behavior continues. Over last 4 days, the difference between full charge capacity/design capacity has varied wildly: 7/22: 10,000/44,400 7/23: 38,632/44,400 7/24: 11,172/44,400 7/25: 17,902/44,400
Could this indicate a bad battery?
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Post by risman on Jul 26, 2020 15:18:13 GMT -5
More info: When battery icon shows 0%, battery leds show fully charged, but running Dell battery diagnostics indicated battery life test failed. ePSA diagnostics similarly state battery cannot supply sufficient power (Error Code 2000-0133). But after I shut laptop down and restart, battery icon shows battery fully charged, and the diagnostic tests above show no problems.
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drcard
Software Review Panel
Posts: 580
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Post by drcard on Jul 26, 2020 15:54:56 GMT -5
Hi risman,
The steps below makes the laptop make new settings for its monitoring software. Sometimes these problems are conflicts with prior corrupted saved settings and making new settings fixes the problem. If not, then I would contact the manufacturer for a solution.
Shut down the laptop by holding down the Shift key while clicking the Shut down option. Once the laptop is off, unplug it from the ac adapter. Remove the battery from the laptop. Wait 5 minutes. Plug the ac adapter in and boot the laptop without the battery. Shut down the laptop the normal way (just click the Shut down option without holding the Shift down). Re-install the battery and boot up.
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Post by risman on Jul 28, 2020 17:26:48 GMT -5
I'm trying this and will let you know how it turns out. Another symptom I wasn't aware of earlier (this is my wife's laptop) is that, while it's plugged in and she is in the middle of an operation, the low battery warning will suddenly come on and the laptop will turn off with no further warning.
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Post by risman on Jul 29, 2020 12:49:53 GMT -5
I did what you suggested and then let the laptop stay on, with the battery disconnected, for a full day. It remained on. Then I reconnected the battery, turned the laptop on with AC power, and it randomly shut down after about 2 hours. Could this suggest there is something wrong with the battery?
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drcard
Software Review Panel
Posts: 580
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Post by drcard on Jul 29, 2020 20:10:44 GMT -5
Hi risman,
Since the problem exhibits itself only when the battery is plugged in, then:
1 - The battery is bad
OR
2 – Wrong battery - Since this is a replaced battery, is it the correct replacement (this includes how it communicates with the PC)?
OR
3 – Electronic charging components in the laptop are malfunctioning.
The first step is to determine if the battery is bad or not. Fortunately, Windows provides some help with this. Windows keeps track of the battery and all you have to do is ask and Windows will provide a detailed report on your battery. What follows is the command to have Windows create a report on monitoring of that battery since it was installed. Data in that report will give us insight on the condition of the battery.
How to Create a PC Battery Report 1️⃣ Open a Command Prompt in Admin mode (WinKey + R, type in cmd, hold Shift & Ctrl keys down and press Enter key, Yes to UAC query) 2️⃣ Enter the following command at the prompt and press the Enter key. Replace the underscore (_) with a space:
powercfg_/batteryreport
3️⃣ This will create the report as a html file named battery-report.html. It will be placed in the C:\WINDOWS\system32 folder.
This html file will have your default browser icon and will open in that browser.
Reviewing the Battery Report
Open the report in your default browser (I use Chrome). Starting from the top:
Computer info
Installed Batteries – the laptop will keep track of all batteries installed on it and label them battery 1, battery 2, etc. Each battery listed will have the name of the battery and the manufacturer to help you identify the battery number of battery in question and thus review the data on that battery and not a prior battery.
For the battery in question (most likely battery 2) under the Name look at the values for Design Capacity and Full Charge Capacity. Full Charge will usually be less than Design, but should only be slightly less than Design. A battery whose Full Charge Capacity is less than 90% of the Design Capacity (more than 10% difference) is not being able to fully charge, which means the battery is bad and doesn’t have long to live. I’m interested in these values for this battery. The auto shut off system bases its calculations on these values and if they are entered wrong, they won’t function properly and not read the battery charge correctly.
Below the Capacity numbers should be Cycle Count. This should not be an issue with a recently replaced battery, but for other readers and completeness....most laptop batteries start to fail soon after reaching 500 recharge cycles.
Battery Usage- This helps follow the usage of the battery over time. The key is to note the Battery Capacity History. This allows you to view the drop of Full Charge Capacity over time. The drop should be gradual and uniform. If the amount of drop in capacity suddenly increases, then the battery hasn’t long to live.
Review this and review the report. I’ll be here for any questions.
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drcard
Software Review Panel
Posts: 580
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Post by drcard on Jul 30, 2020 16:12:01 GMT -5
Hi risman,
I reread your posts and I missed the part where you had already ran the report.
Yes, the big difference and jumping all around for full charge capacity shows the battery to be defective and needs to be replaced. Did the place you purchased the battery from have some kind of warranty? It doesn't appear that it was functioning good from the get go.
Also, in replacing the battery, if possible get a battery with a larger amperage than required for the laptop. Why? Rechargeable batteries not used to their maximum amperage will last way longer than batteries regularly used at their maximum amperage.
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