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    Default Best way to charge? And USB wall socket adaptors

    Hi,

    I live in the UK so am charging the IPhone not from the wall adaptor provided. I am getting bad (but not terrible) battery life.

    I have charged the unit once from a USB / wall adaptor which outputs up to 1000 mah. I charged for about 15 hours this way but the battery life was no different to just plugging it into my laptop for about 4 hours until it said it was fully charged.

    Has anyone found one method of charging to be better? Also, maybe the Apple socket adaptor gives more that 1000 mah?



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    I'm in the UK too - I went and bought a iPod USB mains adaptor from the apple store at bluewater. Can't say I notice any difference between using the mains adaptor and charging via USB.

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    Quote Originally Posted by RealEvil View Post
    Hi,

    I live in the UK so am charging the IPhone not from the wall adaptor provided. I am getting bad (but not terrible) battery life.

    I have charged the unit once from a USB / wall adaptor which outputs up to 1000 mah. I charged for about 15 hours this way but the battery life was no different to just plugging it into my laptop for about 4 hours until it said it was fully charged.

    Has anyone found one method of charging to be better? Also, maybe the Apple socket adaptor gives more that 1000 mah?
    What kind of USB wall adaptor did you use? There is a little known thing to charge a device through a USB wall adaptor - which has to do with the USB standard:

    Acccording to the USB specification written down in the standard, once a device is plugged in, it is treated as a low power device by the host, so the max. current is limited to 100mA. To increase the current to 500mA (or more) the device needs to communicate to the host that it is a high power device.

    As the Apple products (iPods and iPhones) are implementing the USB standard correctly, they don't accept the cheapo USB wall adaptors because these things don't have the intelligence built in to communicate with the device.

    As a result, your iPhone or iPod won't charge correctly (or not at all) from the USB adaptor, but will charge if you connect them to the USB port of a computer. The Apple USB adaptors contain the intelligence to communicate with the device, so the iPhone/iPod will recognize these adaptors as valid and will charge the battery correctly.

    This is nothing which Apple has built into their chargers to prevent people from using different chargers - it's just that Apple has implemented the USB standard correctly.

    cu/

    Sergeij

 

 

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