Would This Be Possible.. Or Practical?

Discussion in 'Microsoft Surface Pro 2' started by Sir Face, Mar 27, 2014.

  1. Sir Face

    Sir Face New Member

    Joined:
    Jan 31, 2014
    Messages:
    96
    Likes Received:
    5
    Trophy Points:
    0
    After just reading another forum member's post concerning "battery wear", I was just wondering, if the SP2's internal battery has worn itself down by 4% within 16 charges or so, would it be practical to use the Power Cover continuously, never let it's battery "zero out" and prevent the SP2's internal battery from ever running down any, and therefore reduce it's "wear"? It sure would be cheaper to replace a Power Cover than the SP2. Does that make any sense whatsoever?
     
  2. jefhart

    jefhart Member

    Joined:
    Jan 2, 2014
    Messages:
    181
    Likes Received:
    6
    Trophy Points:
    18
    Location:
    Cincinnati
    My Device:
    SPro2
    Microsoft says to drain the battery once a month for max lifetime. Saw it on their website somewhere...
     
  3. jnjroach

    jnjroach Administrator Staff Member

    Joined:
    Nov 9, 2012
    Messages:
    7,105
    Likes Received:
    1,724
    Trophy Points:
    113
    Location:
    Seattle, WA USA
    My Device:
    Surface Book
    The Power Cover make the Surface Pro an Ultrabook, kills the flexibility of the device. These are disposable devices at this point, you can expect 2 to 3 years depending on usage. I use the Power Cover when I will not have the ability to plug in during the day lasting 7+ hours (I.e. today). It isn't an everyday blade as far as I'm concerned, my Touch Cover 2 is with me to switch out when the cover has exhausted it charge.
     
  4. javispedro

    javispedro Member

    Joined:
    Mar 16, 2014
    Messages:
    133
    Likes Received:
    4
    Trophy Points:
    18
    Location:
    Barcelona
    The "weird" power cover charging algorithm seems exactly designed to ensure that most of the wear goes to the power cover.
     
  5. Rvacha

    Rvacha Member

    Joined:
    Mar 9, 2013
    Messages:
    181
    Likes Received:
    14
    Trophy Points:
    18
    FWIW I *think* the battery wear metric is not entirely accurate in the early weeks. When you take it out of the box, it has already been "told" what the capacity should be, then adaptively learns about "actual" capacity via the "fuel gage" function. Thus if the capacity of the new battery was less than initially told, it will appear to have more wear after a few dozen cycles. I saw similar fast wearing on my SPs, but after a month or so the wearing slowed rather dramatically
     
  6. jrapdx

    jrapdx Member

    Joined:
    Jan 14, 2014
    Messages:
    259
    Likes Received:
    21
    Trophy Points:
    18
    Location:
    Oregon
    Hmm, I vaguely remember learning years ago that rechargeable batteries lose capacity more quickly when new, then the rate of loss "flattens out", settling in to a slow decline until near EOL, and then can "die" quickly.

    Of course, battery formulation technologies have evolved like so many other technologies, so this "rule of thumb" may apply to less degree than before. I'd defer to others with more up-to-date info, but quite possibly the old idea still has some merit.

    As usual, looks like I have still more to learn...
     

Share This Page

Search tags for this page

surface power cover