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  1.    09 Dec 2016 #1
    Join Date : Sep 2014
    Dublin Ireland
    Posts : 171
    Win 10-

    how many mAh s does it tak to power my Surface3


    I have a Surface 3 & I think the battery has failed!
    It will operate with the charger plugged in! But I need it to use it away from a power source!

    I can't find the number of mHh it takes per hour to power it!

    Is their a portable power supply I can purchase, that I can run it on until I get a new one?

    Tully
      My ComputerSystem Spec
  2.    09 Dec 2016 #2
    Join Date : Mar 2015
    Philadelphia
    Posts : 1,174
    Windows 10 Pro x64

    You should be able to buy a Surface charger online. You can check some of your local places tech places as well. In the US, our Best Buys carry them.
      My ComputerSystem Spec
  3.    09 Dec 2016 #3
    Join Date : Oct 2014
    Posts : 2,593
    W10 Pro + W10 Preview

    Quote Originally Posted by DeaconFrost View Post
    You should be able to buy a Surface charger online. You can check some of your local places tech places as well. In the US, our Best Buys carry them.
    His problem is the battery....if it works with the charger plugged in.

    Wrote the above whilst using my MSI Gaming laptop, where of course you can just change the battery.

    Now working on my Surface Pro 4 realise you cannot change the battery....stupid me...
      My ComputersSystem Spec
  4.    09 Dec 2016 #4
    Join Date : Jul 2015
    Posts : 9,625
    Windows 10 Pro

    This website says the internal battery is 28 Wh;
    Battery Life - The Surface 3 Review

    That converts to 5,600 mAh at 5 volts. Probably need to add some for battery charging, though, because I would assume power through the external power port would try to charge the battery.

    https://www.amazon.com/dp/B01G1XH46M...subtag=WC67037
      My ComputerSystem Spec
  5.    09 Dec 2016 #5
    Join Date : Sep 2014
    Dublin Ireland
    Posts : 171
    Win 10-
    Thread Starter

    Quote Originally Posted by DeaconFrost View Post
    You should be able to buy a Surface charger online. You can check some of your local places tech places as well. In the US, our Best Buys carry them.
    Sorry:

    My mistake!

    I should have said "Is there a portable device that I can charge off-line & use as battery backup?"

    Tully
      My ComputerSystem Spec
  6.    09 Dec 2016 #6
    Join Date : Sep 2014
    Dublin Ireland
    Posts : 171
    Win 10-
    Thread Starter

    Sorry:

    My mistake!

    I should have said "Is there a portable device that I can charge off-line & use as battery backup?"

    Tully
      My ComputerSystem Spec
  7.    09 Dec 2016 #7
    Join Date : May 2015
    Posts : 1,656
    Win 10 X64 Pro 15063

    You need a 5V battery pack. There are many on the market, with a broad range of prices and capacities. They are mainly intended for smartphones, but if the Surface 3 original battery was only 5600 mAh (post #4), there are many with more capacity than that.

    I wonder what it would cost to have the battery replaced? It'd be more in the line of a repair than a simple replacement.

    https://www.ifixit.com/Guide/Microso...lacement/52684

    Doesn't look like something I'd try myself, unless I was prepared to write off the Surface 3.
      My ComputerSystem Spec
  8.    09 Dec 2016 #8
    Join Date : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 10,752
    Windows 10 IoT

    Quote Originally Posted by bobkn View Post
    You need a 5V battery pack. There are many on the market, with a broad range of prices and capacities. They are mainly intended for smartphones, but if the Surface 3 original battery was only 5600 mAh (post #4), there are many with more capacity than that.

    I wonder what it would cost to have the battery replaced? It'd be more in the line of a repair than a simple replacement.

    https://www.ifixit.com/Guide/Microso...lacement/52684

    Doesn't look like something I'd try myself, unless I was prepared to write off the Surface 3.
    The 5V battery pack will only work if the surface is looking for 5V at the charge port. My guess is the Surface is like laptops etc and a lot higher voltage than 5V. And not a USB charging/power port like on a smart phone. If this is what your talking about? https://www.adafruit.com/products/1566

    The reports I have seen, indicate the surface is glued together and not meant to serviced. Not by mere mortals anyway. lol.
      My ComputerSystem Spec
  9.    09 Dec 2016 #9

    I found this article at "Love my Surface" External Battery for Surface. If the battery isn't working, though, this approach may not help because it uses the battery as a "power buffer" of sorts. You may need to send it in to get it replaced, which I understand costs $400-450 for out-of-warranty Surface Pros. Cheaper to jump on the current Xmas specials and buy a new one for $500. Then you can give the busted one to charity and take a $200 tax write-off for "gifts in kind."
    HTH,
    --Ed--
      My ComputersSystem Spec
  10.    10 Dec 2016 #10
    Join Date : May 2015
    Posts : 1,656
    Win 10 X64 Pro 15063

    Quote Originally Posted by alphanumeric View Post
    The 5V battery pack will only work if the surface is looking for 5V at the charge port. My guess is the Surface is like laptops etc and a lot higher voltage than 5V. And not a USB charging/power port like on a smart phone. If this is what your talking about? https://www.adafruit.com/products/1566

    The reports I have seen, indicate the surface is glued together and not meant to serviced. Not by mere mortals anyway. lol.
    No, I checked. The Surface 3 charger is 5V.
      My ComputerSystem Spec

 
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