my laptop battery was working on 31 December but not now. what might have caused its malfunction?

hi,
yesterday my laptop's battery was working fine. now it is not working. my laptop has direct connection to electricity.my Laptop;s battery Light flashes to white and yellow.the battery is not working..plz help fix it.
thanks.
dell latitude E 6420 series.

Could be many reasons. I've no real answer but some questions that might help.

Is the battery the original Dell one or is it a 'third party' replacement?

Has the battery shown any signs of failing in the run up to this happening?

Is the AC adapter the original Dell one?
Dell use 'coded' mains adapters that are identified by the laptop. Generic 3rd party replacement mains supplies will usually not work.

You could try removing the battery and then press and hold the power button for a few seconds (after first disconnecting from AC mains). Refit the battery and retest.

Dell LED fault info.

Please run the Dell diagnostics full tests overnight while sleeping > take pictures > post images or share links displaying the tests performed with results

@Mooly thanks for your reply.
dism/online/cleanup image/restoreHealth was taking a lot of time.so I closed it by pressing X button.and try to restart laptop so that when my laptop restart,it will run dism command smoothly.but during laptop restart,
it was restarting........restarting......restarting........restarting.i mean it took a lot of time.so I unplugged this Laptop and removed the battery by hand.
but when I was inserting the battery back into this laptop.it stuck to one corner and to the other corner, it went smoothly in its place.
so I applied force to remove the wrongly inserted battery again.It was stuck very hard to one corner lenghtwise.I applied more force to remove it,and the battery removed.Again inserted this battery. But now its not working.
i removed and inserted it several times but the battery is not working.
PLz help.
yes this battery is original dell battery,

Question: Has the battery shown any signs of failing in the run up to this happening?
Answer: No.it didn't show any signs of failing.it quickly charged to 100%.

zbook said:

Please run the Dell diagnostics full tests overnight while sleeping > take pictures > post images or share links displaying the tests performed with results

Support for Latitude E6420 | Diagnostics | Dell US

Click to expand...

will this test identify the problem or solve/fix the problem.because we already know the problem is with the battery.
it can be repaired but we just don't know how?

Its usefulness is to check other components as well as battery test confirmation.




This link may also be useful:

@zbook yesterday,on rebooting laptop, there was some kind of test offered to me by this laptop.i pressed F5 to test my laptop hardware.
the test took some time, and show the result, your battery is not working.and other hardware components were working fine.

Please run through the Dell troubleshooting link.

Is this the original battery from 10+ years ago? If so, simply replace the battery with a new one, or invest in a completely new laptop.
Dell Latitude E 6420 With DDR3 RAM is a very old machine.

Ghot said:

Y2K24

Click to expand...

Yeah, it is a bit odd that it died exactly at this point in time....

@zbook
i think the problem may not have been caused by electricity fluctuations.
i think I applied a great amount of force when I try to re-insert the battery into its place.
i heard very small voice of clutch while inserting the battery.
i think some tiny amount of connections might have been damaged.but I may be wrong.not sure 100%.

This is Dells step by step link:

gaffar said:

i think I applied a great amount of force when I try to re-insert the battery
some tiny amount of connections might have been damaged

Click to expand...

Highly possible.

About 20 years ago... I had a screwdriver slip, and kill a whole motherboard.
I was putting a lot of pressure on the screwdriver.

If the laptop works without the battery then charger is functioning correctly. Take a cloth with a bit of rubbing alcohol on it (or some on-the-go alcohol swabs), and clean the metal contacts that connect your battery to your laptop.

Make sure to install all Windows important updates.

Install latest versions of your laptop device drivers you can download the latest device drivers from the device manufacturer or from your laptop manufacturer website.


Step 1

1. Shutdown your laptop.

2. Remove the battery.

3. Connect the AC power adapter to your laptop.

4. Power on the laptop

5. Open the Device Manager by typing Devmgmt.msc into Start Menu or from Control Panel.

6. Under the Batteries category, right-click all of the Microsoft ACPI Compliant Control Method Battery listings, and select Uninstall (it’s ok if you only have 1).



7. Shutdown the laptop.

8. Insert the battery.

9. Power on the laptop.

If above suggestions wont resolve the battery charge issue then follow below steps.




Step 2

1. Shutdown the laptop.

2. Remove the battery.

3. Start the laptop with only AC adapter connected to laptop.

4. When you login to Windows OS connect the battery while Windows OS working.





Step 3

Reset the System Management Controller. Use one of these methods to reset the SMC, which controls battery management, battery status light.

1. Shut down the computer and disconnect the power cord.

2. Remove the battery.

3. Press and hold the power button for ten seconds.

4. Reattach the battery and AC power adapter, then start up the laptop.


Hopefully one of the above suggestions will help you resolve the battery not charging problem. If battery still doesn't charge, you may need to replace your battery.

If the battery has been replaced in the 12 years of the laptop's life, besides being a bad battery,also consider the charging circuitry on the motherboard could be ker-plunk. I've bought a lot of those old Dell laptops back in the day to rebuild and even ran across a case or two where the charger would run the laptop just fine, but wouldn't charge a known good battery. So as someone stated no one can tell you the exact cause.

Dell Test is going to take 12 hours to complete.
my electricity company is turning the electricity supply on and off approximately hour by house, so the Dell test might never be completed.
my battery name is
Dell 60 wh standard rechargeable Li-on Battery Type T54EJ 11.1 V.

it.