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Tips Fast charge with phone off

Discussion in 'Android Devices' started by deftdrummer, Jul 26, 2010.

  1. deftdrummer

    deftdrummer Well-Known Member
    Thread Starter
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    Nov 13, 2009
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    This may not be very new or exciting to most people, but I wanted to throw out there that the DX charges off the wall via USB when the phone is off. Perhaps other Android phones did this, but I went directly from the iphone to the original Droid and sorely missed this feature.

    Well, it looks as though we DX users are in luck because the same is true for us when we plug in to the wall. I've only been charging for about two hours from the wall charger with the DX off and I'm already at 60%.

    So nice of Moto to build in a charging indicator even when the phone is off. Loving this phone more and more by the minute.
     

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  2. Thong

    Thong Active Member
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    Jun 15, 2010
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    My experience is a little different. Last week in particular due to a thread on battery life I ran my DX as low as I could before it started begging me to plug it in(10% life).

    I plugged it in with power still on(had to receive calls)

    It took just over 2hours to fully charge from 10% to 100%
     
  3. edgeman4

    edgeman4 Well-Known Member
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    Jul 18, 2010
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    Seems to charge super fast when plugged into the wall, whether on or off, for me. USB from a computer barely charges it.
     
  4. xenocide

    xenocide Member
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    Jul 19, 2010
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    I've had the opposite result, when I charge from my computer it charges at the same speed and seems to last 2-3x longer than when I charge from the Wall. Could just be really crappy outlets since my house is pretty old with bad wiring, but I definitely have gotten much better results when charging via USB\PC.
     
  5. dequardo

    dequardo Well-Known Member
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    Nov 18, 2009
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    Definitely not what most see. USB charging is quite a bit slower than AC. AC should fully charge in about 90 min.
     
  6. SFWB

    SFWB Well-Known Member
    53

    Jul 13, 2010
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    Male
    IT Hardware/Network Specialist
    Florida's Nature Coast
    I mentioned in another thread that I found mine also charges better via USB. I suspect my wall charger is defective.

    I've found the USB port on my cable box actually charges it faster than my PC...
     
  7. bemaitea

    bemaitea Well-Known Member
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    Jul 28, 2010
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    I'm on the boat where my USB charges much slower than the wall.

    My wall charger well get my phone refilled in about 2 hours. USB is much longer for some reason...
     
  8. jreed2560

    jreed2560 Well-Known Member
    183

    Dec 31, 2009
    3,922
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    Male
    Sales Specialist/Wireless Consultant
    Tennessee
    charging via usb uses a method called trickle charging. In theory this should charge slower and not stay charged as long
     
  9. dequardo

    dequardo Well-Known Member
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    It's simply a matter of less amperage pushed via PC ports. Half that vs. the AC adapter.
     
  10. bigbadwulff

    bigbadwulff Well-Known Member
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    Jun 15, 2010
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    Couldn't be your house wiring. If the receptacle works, it works. 110 volts is 110 volts(assuming USA ;) )
     
  11. OrderFromChaos

    OrderFromChaos Well-Known Member
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    Jul 21, 2010
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    SoCal
    If your computer (USB host) does not grant permission than the output current to your phone via USB will only be 100mA. If it's properly configured (Droid X seen properly) than the output current from the USB port is 500mA.

    The stock wall charger is rated at 850mA, so either way the wall charger should finish the job quicker than a USB port on a PC.
     
  12. john0821

    john0821 Well-Known Member
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    Jul 25, 2010
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    It takes my phone anywhere from an hour and a half to two hours to fully charge. The USB charges at a much slower rate. But plugging into the computer is good for restoring some battery life on heavy usage days.
     
  13. Modalee81

    Modalee81 New Member
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    Jul 30, 2010
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    I leave my Droid x on and charge it from the wall and it gets 100% from about 10% in just 2 hours.
     
  14. SFWB

    SFWB Well-Known Member
    53

    Jul 13, 2010
    427
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    53
    Male
    IT Hardware/Network Specialist
    Florida's Nature Coast
    I posted about this in the thread under the Accessories forum about chargers... a few nights ago my phone was pretty much dead and I charged it overnight with the OEM wall charger. It was only at 20% when I unplugged it in the morning. I bought a 2 in 1 wall/car charger for $10 at Walmart that charges it in about 2 hours to 100% from 10%.

    I had suspected that my OEM charger was flaky/defective, which is why I just went out and got another one.
     
  15. Mogen1000

    Mogen1000 New Member
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    Feb 22, 2012
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    CEO of TrueCode Studios
    ON, Canada
    i always thought USB3 would make a difference. But guess not
     

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