Dell XPS 13 9350 - Battery life

Discussion in 'Dell XPS and Studio XPS' started by Fink42, Nov 21, 2015.

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  1. Fink42

    Fink42 Notebook Enthusiast

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    I was thinking that now that people have had their XPS's for some time, it would be informative with some battery life information, for future adopters.

    A battery report can be generated from cmd and saved to desktop with the following command:
    Code:
    powercfg /batteryreport /output %USERPROFILE%\Desktop\battery_report.html 
    Then post the report or just the "Battery life estimates" (the last part) and your configuration:
    QDH/FHD, I7/I5/I3, 128GB/265GB/512GB/1TB and 4GB/8GB/16GB

    And maybe your "normal usage style":
    Study, browsing, video streaming, etc.

    Unfortunately I haven't received my XPS yet, so cant even contribute with mine results.. Yet! ;)

    Thanks
     
  2. ghtop

    ghtop Notebook Consultant

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    i5/8GB/256GB/FHD

    So far I've found BatteryBar's estimates better than Windows', and the cumulative estimate is ~9 hrs. Realistically, that's working out to about 7-8 hours between charges without always draining the battery. I'm just about to recharge at about 25% with 7 hours usage, for example.

    Power consumption at idle is ~4W, otherwise mostly Office-based work & browsing with FF and general fiddling. It's a close equivalent to the 12-inch Macbook Pro in this respect, and not quite as much as I'd hoped.

    The main issue is that it came with 7.3% battery wear out of the box - so only 53,329mWh out of 57,432 mWh. Not good. This value hasn't shifted at all either, which is odd as on every other machine I've ever owned it varies between charges. So I suspect something isn't quite right on the battery firmware side.
     
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  3. didsip

    didsip Notebook Consultant

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    "Current estimate of battery life based on all observed drains since OS install
    Since OS install 6:41:37 - 7:04:20"

    Typical usage is some browsing, watching video (streamed from a media server), writing latex, reading a bunch of pdfs. Maybe play an hour of FTL, every now and then. I typically have the brightness set to 20-40%, but when I watch video I often turn it up all the way, so that might reduce the overall number. It seems to be good enough to get me through a day of work, but I expected a bit more; hope the battery won't wear out too quickly.

    My battery actually says it's current capacity is 54,454 mWh, whereas design capacity is 57,532 mWh - but according to the report it regularly charges to 106%..

    Edit: i5/256/FHD
     
    Last edited: Nov 22, 2015
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  4. Fink42

    Fink42 Notebook Enthusiast

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    Thanks!
    Do you have the FHD or QHD version?
     
  5. wickette

    wickette Notebook Deity

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    QHD I7 512GB :
    in the 7-8 hrs with heavy to moderate usage : download + netflix/1080p mkv movies + chrome + eclipse programming ...

    i plan on using edge when it'll get plugins, it's supposed to have better for battery life, also intel and windows are planning small updates that would improve battery life.

    Overall it's totally what i was expecting, it's good.
     
  6. didsip

    didsip Notebook Consultant

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    FHD. Idle consumption is between 4 and 6mW, usually.

    I'm using Firefox, in case that's relevant.
     
  7. Fink42

    Fink42 Notebook Enthusiast

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    Wow! That's impressive compared to the FHD.
    I personally was hoping for battery life around 8-9 hours. But with future updates and maybe changing the SSD (no sleep problem) that doesn't seem unrealistic.
     
  8. Fink42

    Fink42 Notebook Enthusiast

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    Anybody else with QHD that would share their battery life? ;)
     
  9. juris

    juris Newbie

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    i have the QHD i7 256GB.. battery life is only 4~6 hours with moderate web browsing. Not very good.
     
  10. barthmania

    barthmania Notebook Enthusiast

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    I have the QHD, i7, 1TB SSD, and it's around 5h for me for normal usage using Chrome.
     
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