battery indicator aspire v7

Jfmartel
Jfmartel Member Posts: 10 New User

My battery indicator seems to be showing incorrect readings. When I get to about 16% battery, it will drop to 5%. It will not even show the battery critical warning, it just goes to 5%.

 

I already tried reinstalling windows to factory, same issue. Also installed Linux to see if it was a specific problem with Windows, same issue.

 

I ran powercfg to see what was going on and see this for my battery;

Battery ID17266SANYOAP13B3K
ManufacturerSANYO
Serial Number17266
ChemistryLION
Long Term1
Sealed0
Design Capacity53400
Last Full Charge55455

 

For some reason, it is showing a full charge of more than design capacity. Could this be why it incorrectly thinks it has more battery, and then quickly readjusts to 5%?  I tried recalibrating (three times) the battery by completely draining and then completely charging and have the same problem

 

Also, I found that if I overcharge (leave it plugged in after fully-charged light comes on) then this problem disappears for that discharge cycle, but will return if I don't overcharge it for the next cycle. It seems to think it's fully charged too early when it's actually not!

 

Honestly, I'm hoping there is a way to fix this without having to replace the battery, since it's not removeable for this model so I would have to send it in for warranty replacement. This laptop is only about 6 months old.

 

Any advice?

Answers

  • philetus
    philetus ACE Posts: 4,759 Pathfinder

    The Power Manager isn't exact. It's more like a guestimate on how good your battery is. If you're getting average battery life, you're probably ok. You can reinstall the power manager and see if it helps. 

  • Jfmartel
    Jfmartel Member Posts: 10 New User

    How do you reinstall it?

  • philetus
    philetus ACE Posts: 4,759 Pathfinder

    Go to Control Panel/ Programs and Features.

  • Jfmartel
    Jfmartel Member Posts: 10 New User

    Which power manager are you referring to? I don't see any sort of power management program installed? I'm referring to the built-in windows battery indicator acting incorrectly. I've already tried reinstalling windows as a whole and haven't seen a difference

  • philetus
    philetus ACE Posts: 4,759 Pathfinder

    I was refering to the Acer power manager software.

  • Jfmartel
    Jfmartel Member Posts: 10 New User

    I actually uninstalled that program when I purchased the laptop. I tried reinstalling it but I'm still having the issue.

     

    At this point I think its just an issue with the firmware in the battery. I will try and find time to send the laptop in for warranty battery replacement to see if it solves the issue

     

    Thank you for your replies thus far,

     

    Jfmartel

  • Jfmartel
    Jfmartel Member Posts: 10 New User

    So it's been nearly a year now since I purchased this laptop. I finally got around to submitting a warranty claim on the laptop. They replaced the battery and sent it back, and the issue is exactly the same as before. I am not sure what to do at this point.

     

    I have:

     

    -recalibrated battery

    -used reset button on bottom of laptop

    -re-installed windows

    -updated drivers

    -updated BIOS

    -replaced battery

     

    What else could possibly be causing this issue?