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Tips Charging through Computer USB!!!!

Discussion in 'Android Devices' started by LunchBB, Dec 19, 2011.

  1. LunchBB

    LunchBB Android Enthusiast
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  2. alostpacket

    alostpacket Over Macho Grande?
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    Does the data connection work while it's charging? ie, would ADB still be able to connect?

    I would imagine so, but was curious if you already knew :)
     
  3. LunchBB

    LunchBB Android Enthusiast
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    Oh never thought of that. Just noticed it won't have data connection while charging. I guess it's okay for me because I always use WIFI File Explorer and dropbox (with DropSync ) to copy files.
     
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  4. Szadzik

    Szadzik Android Expert
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    There is a cable like that on DealExtreme.com and it has a switch for Data and Charging. A better solution IMO.

    The one I am talking about also is just a USB extension, so you can use ANY charger.
     
  5. LunchBB

    LunchBB Android Enthusiast
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    Do you have the link for that cable? That seems a good one with switch for data and charging. I wish I know about it earlier.
     
  6. alostpacket

    alostpacket Over Macho Grande?
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    I guess I just wondered if the USB port for a PC would provide enough power?

    Ultimately I'd like to be able to test apps and charge at the same time so having adb work in kinda essential there :)

    But that looks like it will work -- I may have to pick one up. I need to order a new pen from them anyways, lost my last one and it was pretty neat for $2.30
     
  7. Szadzik

    Szadzik Android Expert
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    You will not get any charging while using the Tab. It will discharge faster than charge.
     
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  8. wa3pnt

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    I get a small amount of charge while using the Tab when the Charge/Data cable is connected to my laptop. I do not see a discharge in the battery level, as shown by the Battery Widget.

    George
     
  9. Buddha64

    Buddha64 Android Enthusiast
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    USB output from a PC is limited to 0.5A. The Tab draws far more than that when you're using it. You're still discharging, just not as rapidly.
     
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  10. alostpacket

    alostpacket Over Macho Grande?
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    That's fine, as long as I dont have to switch cables. I can let it charge overnight, but would like to leave it connected to the PC and not have to bother with a wall charger.

    :)
     
  11. Buddha64

    Buddha64 Android Enthusiast
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    To be clear... I've never heard of this "polarity" issue with the Tab 10.1. I would think it would have been highlighted over on XDA, but there isn't anything referencing it. And your link doesn't specify which Galaxy "tablet" this "adapter" is designed for. It could be 8.9 or 7, or even the old Tab.

    What I have read is that, unless you are rooted/on a kernel which supports USB charging, you cannot charge from the USB. FYI - I use a standard USB cable connected to the "Tab to USB connector" I purchase from Samsung. Works fine.
     
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  12. Szadzik

    Szadzik Android Expert
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    Speculation, speculation. I know I did not say that in my previous reply, but I have this cable and have been using it for a few months now with great success.

    As for XDA - that is exactly where I got the links to those cables from when I needed to buy one.

    No kernel support is needed.
     
  13. LunchBB

    LunchBB Android Enthusiast
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  14. Macz

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  15. Szadzik

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  16. lucasv1179

    lucasv1179 Newbie
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    That the tab will charge on USB, only if it is turned off. Haven't tried it though.
     
  17. PavementPilot

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    I have tried using a car socket plug with usb port to charge my tab on the road. I will not work, and I can see it is either a polarity issue as noted above or the output of the usb car charger is not enough for the tablet.
     
  18. Szadzik

    Szadzik Android Expert
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    Just an adapter needed I posted about a few posts above.
     
  19. PavementPilot

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    I already have that cord, it came with my tablet. I tried using the car socket with USB ports, and it will not work. I am going to have to use either my big 1500 watt invertor or get a small 75 watt plug in invertor.
     
  20. Szadzik

    Szadzik Android Expert
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    I did not mean the cord that came with your tablet, I meant a special adapter that I posted a link to a few posts above.
     
  21. LunchBB

    LunchBB Android Enthusiast
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    That cord comes with your tablet won't charge through regular computer USB port, nor any of the AC/USB adapter. It only charges with the AC/USB adapter comes with your tablet.

    That's the whole point of this thread to get other kinds of cord to charge through regular USB port.
     
  22. Buddha64

    Buddha64 Android Enthusiast
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    I use mine for charging via USB port all the time. Just run a little script, and done, charges fine.
     
  23. LunchBB

    LunchBB Android Enthusiast
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    Would you mind sharing your wonderful script?
     
  24. Buddha64

    Buddha64 Android Enthusiast
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    Just wander over to XDA in the Tab 10.1 forum. Search on USB Charging.

    Alas, I don't have my Tab at work.
     

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