1.    11 Mar 2017 #1
    Join Date : Jun 2015
    UK
    Posts : 2,101
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    Laptop Battery Charge Status


    The battery status on my 3 year old Dell laptop shows Fully Charged 100% when plugged in but then drops to 92% as soon as I unplug the charger. Why does Windows 10 the report battery status like this?
      My ComputersSystem Spec
  2.    11 Mar 2017 #2
    Join Date : May 2016
    Posts : 759
    Windows 10 Pro

    It might be your battery and not windows 10. Sometimes a battery will hold a fixed charge point. Have you checked with Dell on how to completely drain your battery?
      My ComputerSystem Spec
  3.    11 Mar 2017 #3
    Join Date : Aug 2016
    S/E England
    Posts : 4,520
    10 Home x64 (1709) (10 Pro on 2nd pc)

    @steveC, You should generate a Battery Usage Report. This will tell you a lot about your battery and its health, including the maximum charge it can hold compared with its design capacity.

    Battery Usage Report - Generate in Windows 10
      My ComputersSystem Spec
  4.    11 Mar 2017 #4
    Join Date : Jun 2015
    UK
    Posts : 2,101
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
    Thread Starter

    Quote Originally Posted by Bree View Post
    @steveC, You should generate a Battery Usage Report. This will tell you a lot about your battery and its health, including the maximum charge it can hold compared with its design capacity.

    Battery Usage Report - Generate in Windows 10
    That report shows the battery design capacity is 57,720mWh. The full charge capacity was the same figure until Aug 16 when it dropped to 54,834mWh and has been that value since. That's a reduction of 5%. The original battery life estimate is 5:49: 03 and is now 5:31:36. That's a reduction of 5% again. This differs from the reduction of 8% reported by Windows. Does this indicate my battery is starting wear out or is there some way of resetting it?
      My ComputersSystem Spec
  5.    11 Mar 2017 #5
    Join Date : Aug 2016
    S/E England
    Posts : 4,520
    10 Home x64 (1709) (10 Pro on 2nd pc)

    Quote Originally Posted by Steve C View Post
    The original battery life estimate is 5:49: 03 and is now 5:31:36. That's a reduction of 5% again. This differs from the reduction of 8% reported by Windows. Does this indicate my battery is starting wear out or is there some way of resetting it?
    No, that looks good for a Li-ion battery of its age. There's an inevitable small loss of capacity with each recharge cycle. 5% is nothing to be concerned about, plenty of life left in it yet. What this indicates is that Windows is misreporting the battery status.

    Try recalibrating the battery so that Windows can estimate its capacity more accurately. There may be specific instructions in the manual for your model. Dell's general guidance is here.
    On-the-Go articles | Dell

    If that has no effect, try going to Device Manager and uninstalling the 'Microsoft AC Adapter' and 'Microsoft ACPI-Compliant Control Method Battery'. Then scan for hardware changes (on Device Manager's Action menu) to reinstall them.
    Last edited by Bree; 11 Mar 2017 at 10:35.
      My ComputersSystem Spec

 


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