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  1. #1
    Member
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    Default USB plug as a power supply

    Is it safe for me to use the mains-to-USB plug (which came with my LG Optimus phone, and is used when recharging it) to recharge my mp3 player, which normally plugs into a computer USB port to recharge?

    My feeling is that it would be OK to do this, but I'd like some reassurance from someone more knowledgeable than me before I try, in case I fry my mp3 player!

  2. #2
    bluenose
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    Default Re: USB plug as a power supply

    USB2 connectors conform to a worldwide standard for shape and size of plugs and sockets. Wiring for data and voltage are standardised so it should be safe to do what you are asking.

    NB. There are differences between USB2 and USB3 connectors.

  3. #3
    6146-B Billy T's Avatar
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    Default Re: USB plug as a power supply

    If the plug fits your MP3 socket it will be fine. They all conform to the standards as bluenose has said. I mix and match mine freely, the darned things seem to breed so short of tagging them I never know which is which anyway.

    Cheers

    Billy 8-{)
    Some days it's not even worth chewing through my restraints!

  4. #4
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    Default Re: USB plug as a power supply

    Thanks for setting my mind at rest!

  5. #5
    Scooter Hoon
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    Default Re: USB plug as a power supply

    Note not all actually work. Depends on the requirements of the device. I got a bluetooth headset that has a USB charger. It obviously does not put out enough current as it will not charge my iPhone through its USB cable. However another one that is rated as higher amps does work.

  6. #6
    Computer "Specialist" Agent_24's Avatar
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    Default Re: USB plug as a power supply

    All USB ports on a computer have to supply up to 500mA.

    However as Veldthui said, a custom charger for a certain device may supply less than this and be unsuitable for another device which needs a higher current for charging.

    Cheap ones may get overloaded and damaged.
    Non-system disk or disk error. Replace and strike any key when ready.

  7. #7
    Evil Super Villain Cato's Avatar
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    Default Re: USB plug as a power supply

    Edit: Misread something.
    Who was the first that forged the deadly blade?
    Of rugged steel his savage soul was made.

  8. #8

    Default Re: USB plug as a power supply

    Also note that some USB chargers output way higher amperage than the standard USB spec (I have one in my car that outputs 2 amps) which, depending on the device, means that you can charge faster.

  9. #9
    Junior Member
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    Default Re: USB plug as a power supply

    A curious exception to the above. The Sony eReader refuses to charge from one of these adapters. It puts up a message to the effect that "this is not a Sony charger" and refuses to charge.

    You have to pay out for a Sony charger, which consists of a mains adapter with a USB cable. Piracy is alive and well.

  10. #10
    Computer "Specialist" Agent_24's Avatar
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    Default Re: USB plug as a power supply

    This is quite interesting http://vimeo.com/13835359
    Non-system disk or disk error. Replace and strike any key when ready.

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