All USB cables are not alike


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  1. Phileas

    Phileas Member This Topic's Starter

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    This is similar although not identical to some other threads.

    I bought a cheap (Nokia) USB cable to use at work. It seemed not to be charging the phone very quickly.
    Today I did some tests. It does charge the phone from my work PC but not nearly as fast as the HTC supplied cable.

    Generally, if I leave the phone plugged in but do some browsing on and off during the day, at the end of the day the phone is pretty much where it was, battery-wise, at the start.
    With the HTC cable, it charges pretty quickly (i.e a couple of hours).

    The data transfer rate is the same with both cables.

    Is there a sure way of knowing what cable to buy to get the same performance? (Short of buying an HTC cable)
     

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  2. sandozer

    sandozer Well-Known Member

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    There should be no difference, the 5V wires are just that, wires nothing in between. As long as they can take 400ma from the charger which is all the phone will allow.
     
  3. ianb1965

    ianb1965 New Member

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    I wait to stand corrected but I thought the max the phone will charge at is 1000ma (1amp).

    The original mains charger supplied says 5 volt 1000ma.
     
  4. sandozer

    sandozer Well-Known Member

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    Would like to agree, I did some tests and found regardless of phone condition, On/Off etc the current delivered to the phone was 400ma. (With 5V applied to the USB power connections) I was working with a battery around 45% , possibly if the voltage level is less it may allow more current, but I was surprised that this figure remains constant regardless of phone function.

    Would really like someone else on the forum to try this.
     
  5. antipesto93

    antipesto93 Well-Known Member

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    shouldnt be a difference
    but usb ports only supply half the power a mains charger does.
     
  6. OFI

    OFI Well-Known Member

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    The charger says 1000ma but a PC will not supply 1000ma. The spec of USB is to supply 500ma, some do provide a little under some provide a little over.

    I find it hard to believe a cable would make a difference either way unless it was VERY badly made.

    Just reread sandozers post..

    So it really won't accept a quicker charge even from mains? :(
     
  7. nx1977

    nx1977 Well-Known Member

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    I've been using my old Nokia lead, and notice the slow charging as well.

    Very odd.
     
  8. Phileas

    Phileas Member This Topic's Starter

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    I haven't tried that although it did occur to me. I really just want to get a cable that is comparable to the HTC supplied one.
     
  9. OFI

    OFI Well-Known Member

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    I bought the cheapest one I could find on eBay and it charges at exactly the same rate as far as I can tell :p
     
  10. Phileas

    Phileas Member This Topic's Starter

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    I've just done a test. The HTC cable charges from the mains at 4 times the rate of the Nokia.
     
  11. david_inuk

    david_inuk Well-Known Member

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    Some cables won't charge at all!

    I've bought two only to find that they are only good for data transfer. Most annoying!!

    There's also an issue with some car chargers which although they give the impression that they are charging, they actually aren't. Beware about relying on one on a long trip which you've not tested before!

    See a long discussion about it here:
    Shocking Battery Story.. - xda-developers
     
  12. Banzibarn

    Banzibarn Well-Known Member

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    I'm very surprised to hear this. I use an old nokia cable for charging at work and it never occured to me that it would be any different.

    I've never seen spec mentioned on USB cables - as far as I knew, a cable was a cable....

    Interesting to know though.
     
  13. WozzaX

    WozzaX Well-Known Member

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    I also have a Nokia USB cable bought from Amazon and this does not charge above 90%.

    Plugged in for about 3 hours now and was almost at full charge when I plugged it in after getting to work.

    Just stays at 90%.
     
  14. kaso

    kaso Member

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    I've got a short (20cm) cable that came with my Jabra BT headset. I use it for charging my Desire - I can't detect any difference from the "original" cable (except for the length ;-) )
     
  15. Banzibarn

    Banzibarn Well-Known Member

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    My Nokia cable will charge the phone to the brim..
     
  16. WozzaX

    WozzaX Well-Known Member

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    It did finally get to 100%.

    But it took 6 hours.

    The fact it was only slightly used from full battery says that the cable I have is not charging it very quickly
     
  17. HYCAET

    HYCAET Guest

    Can someone help me out with a little request.

    I need a USB cable to charge with, but I need it to be about 50cm longer than the one that comes with the Desire (which I think is 1m). Can anyone post a link for one that will do the job? I'm unsure of what will work with the Desire.

    Thanks
     
  18. HYCAET

    HYCAET Guest

    I don't like to bump, But can anyone help?
     
  19. GrenW

    GrenW Well-Known Member

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    Just buy any USB to micro USB cable. They are all the same (quality of materials aside) that was the whole point of the legislation brought in by Europe.

    I bought the cheapest one I could from Amazon :
     
  20. staz1000

    staz1000 Well-Known Member

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  21. wuthton

    wuthton Well-Known Member

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    There has been a lot of discussion on XDA about this. As I understand it all cables are the same but USB chargers are not. The official HTC mains/car chargers are wired to tell the phone it is plugged into a full power source and not into a computer.

    If when you plug your phone in you are given the options of charge only, disk drive etc then your phone is charging at 500ma, if you do not get the options then you are charging at 1000ma.
     
  22. Phileas

    Phileas Member This Topic's Starter

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    If you read the whole thread you'll see this is apparently not the case.
    My cheap Nokia cable charges my phone at a quarter the rate of the supplied cable from the same AC adaptor.
     
  23. jimdriver2

    jimdriver2 Well-Known Member

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    I got a cheap one of ebay and used it today to charge off my work PC. I got 5% in 30 mins. The HTC mains charger is much faster, but I expected that, i'll test the HTC cable via the PC, but I used it once before and it seemed slower, but not as slow as the cheap one.
     
  24. Yorik

    Yorik Member

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    I actually have a MicroUSB that onyl charges the phone, it provides no Sync capability. It looks just like a normal cable, but the internal conductors are open circuit. I just keep this one on my HTC Charger now. All good!
     
  25. Shofar

    Shofar Well-Known Member

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    Looking through my supply of cables I have found micro USB plain, with one "barrel" on the micro end and one with "barrels" on both ends.

    As I don't have my Desire yet I don't know if they will charge differently.

    What are the differences?

    What are the barrels for?

    Thanks,

    Shofar
     

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