Battery Wear rate

Discussion in 'Microsoft Surface Pro 2' started by Genie, Dec 11, 2013.

  1. Genie

    Genie New Member

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    What is normal or acceptable battery wear rate? Powercfg /batteryreport shows

    2013-12-04 42,002 mWh 42,002 mWh
    2013-12-05 41,677 mWh 42,002 mWh
    2013-12-06 41,367 mWh 42,002 mWh
    2013-12-07 41,519 mWh 42,002 mWh
    2013-12-08 41,254 mWh 42,002 mWh
    2013-12-09 41,297 mWh 42,002 mWh
    2013-12-10 41,172 mWh 42,002 mWh

    It at 2% and increasing after only few days. I'm rather concious of the fact you can't change surface 2 pro battery.
     
  2. DragonGamer

    DragonGamer New Member

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    Umh, how do you get the battery report to give you such exact values? o:
    Mine only writes 41 mWh or 40 mWh.
    Mine seems to go up and down though. There are about 10 values where the first 5 say 41, the next 4 days say 40 and the last two days 41 again...

    I wouldn't worry that much. iFixit who teared the device down showed that the Pro 2 has a quite high quality battery. Comparable to the ones in iPad who are said to keep 80% of their capacity for 2 years.
    Guess it's normal that the capacity decreases in the beginning the most.
     
  3. Ruffles

    Ruffles Active Member

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    I've had my wear rate fluctuate up and down so I don't know how accurate that is. Mine's currently at 39886mWh.
     
  4. Genie

    Genie New Member

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    Open console, (cmd.exe). Type "Powercfg /batteryreport"

    It generates battery life report as html file with lot of details. If you scroll down there's section on maximum mWh charged like I copied and pasted.
     
  5. Genie

    Genie New Member

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    I don't know if it's due to update but my battery capacity dropped by 20%. From 41,200 mWh to 33,196 mWh. Anyone noticed this?
     
  6. tech57

    tech57 New Member

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    Just ran the report to check mine and it's at 41,632
     
  7. DragonGamer

    DragonGamer New Member

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    Umh, exactly that's what I did but for some reason the values down there are not numbers with decimals but just integers... weird...
     

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