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  1. superlawyer15's Avatar
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       #1  
    So, my surface went from reporting 0% wear to 5% then back to 0% and now to 7%

    What should I make of this?

    I called Microsoft and the rep said it should settle around 5% and hold there for some time but my experience with laptops past is much different.
    The wear would slowly rise from 0% to 10% over the course of a year.

    What do you guys think?
  2. jpw21683's Avatar
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    #2  
    How are you determining battery wear? BatteryBar?
  3. superlawyer15's Avatar
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       #3  
    Yes ...battery bar
  4. jpw21683's Avatar
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    #4  
    I would just keep an eye on it. If it starts getting considerably worse quickly, then you should be concerned.

    I don't know how Battery Bar measures this, and/or how accurate it is. I've had brand new laptop batteries start at 10%.
  5. superlawyer15's Avatar
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       #5  
    I don't know if its a sensor issue (cant be an app issue because all report the same thing) or a battery issue.

    every time I plug it in it charges to the full MaH, and then the battery reports it has 0% wear
    it is only when the battery gets to 30%/40% that it begins to report any wear
  6. Jrexxx's Avatar
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    #6  
    I have the same thing when I use battery bar on my macbook pro running bootcamp, and I think that I've figured out the reason for this: The battery usually doesn't charge up to 100 %. This is a feature that gives the battery a longer life time because lithium based batteries don't like to be fully charged or fully emptied. So I figuerd out that battery bar considers not arriving to "true 100%" as wear.
  7. superlawyer15's Avatar
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       #7  
    Hmm your theory makes a ton of sense;
    but how does that account for the changes in level 5%-7% and then going back down to 0%
    wouldn't it be a set point at which the battery doesn't charge any further? or is that range close enough?

    I think it would be beneficial if a few other surface pro owners would track their battery wear levels and report back in a few days
    this seems like something which would be of benefit for to community as a whole
  8. Jrexxx's Avatar
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    #8  
    The change in percentage may ne due to the fact that the battery doesn't get charged to the same extent each time, it stops randomly around a certain figure. I have a Vaio that gives you the option to charge to "around 80%".
  9. rdubmu's Avatar
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    #9  
    Quote Originally Posted by mkhalil06 View Post
    Yes ...battery bar

    what exactly is battery bar?
    Sent from my Windows 8 device using Board Express Pro
  10. superlawyer15's Avatar
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       #10  
  11. twonline's Avatar
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    #11  
    Same problem here on Surface PRO 128GB.....

    Yesterday wear level was reported as 0%, after a charge now it's reported as 2% in AIDA64 and 2.3% in HwINFO64. My charge cycles are only at 7 or 8. :(
  12. superlawyer15's Avatar
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       #12  
    I think its an issue with how wear is being reported

    I've had my surface since launch and its gone as high as 16% ...it always drops back down
  13. garyjk's Avatar
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    #13  
    go to a elevated command prompt and then type the following:

    powercfg /batteryreport
    press enter

    an extensive html file will be created. just look at the path in the return message and open it up.

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