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  1. Thread AuthorThread Author   #1  
    goody921's Avatar
    iPhone Nanite

    1 Posts

    Default Iphone 2G Problem With External back-up battery--Help Please

    I got the energizer energi to go back-up battery for iphone 2g (Jailbreaked)....
    However, when I put the external battery on... the power meter increased, but no charge sign is appear....(I think it's just charge for the 1 second the time i put the charger on)....I don't think the iphone detect the back-up battery charger....
    The iphone charge okay with the powerblock the came with the iphone...it just doesn't charge with the external back-up battery....

    --I try the back-up battery on my friend's 2g iphone...it work fine....(his iphone detected the battery)....

    Can anyone tell me what is wrong with my iphone,,and how can i fix it?

    Thank you very much
  2. #2  
    flyingember's Avatar
    iPhone Elite

    1,986 Posts
    Global Posts
    2,026 Global Posts


    the 2G charges over usb + firewire pins.
    the 3G and 3GS only charges over usb pins.
    (different pins on the dock connector)

    the backup battery device is likely firewire pins only, I have a car stereo this way

    you need a new backup battery or an adapter
    iPod & iPhone Accessories Power Charging Adapter
    this works for more than just a cars I believe

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