Charging an iPhone Without AC Power

Discussion in 'Front page news archive' started by News Bot, Nov 9, 2012.

  1. News Bot

    News Bot iFans.com News

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  2. rye10516

    rye10516 Active Member

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    The idea I was thinking of in my head was to wire regular alkaline batteries to as close as you can get to 5v and then putting a positive and negative wire to the USB cable. Probably wouldn't work cause not enough amps idk
  3. GrygrFlzr

    GrygrFlzr Active Member

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    Article specifically states that charging iPads this way is nearly impossible and not worth it, why is the image of an iPad? Pictures should reflect the content of the article, so an image of the iPhone/iPod Touch would have been a better choice.
    Xerox likes this.
  4. bongoman

    bongoman Member

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    The Minty Boost comes pretty close to that
  5. kaelanduck

    kaelanduck Active Member

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    You can easily double up the batteries in parallel, it increases the current up to a point. Certainly enough to charge any iDevice (if you have that many batteries to spare)
  6. GrygrFlzr

    GrygrFlzr Active Member

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    I just looked through the MintyBoost site, turns out Apple devices use the data parts of the USB while charging to make sure it's an official charger, or something like that. You'd need something to input in the D- and D+ ports of the USB cable.
    (I have no idea what I just said)
  7. Maverik

    Maverik Member

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    That looks amazing! I'm actually considering buying it just because it's so cool.
  8. rye10516

    rye10516 Active Member

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    I have no idea how they got ~5v from 2 1.2v batteries. Maybe I should major in electrical engineering. It seems very practical lol
  9. Bubalooshi

    Bubalooshi Active Member

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    You can't just throw batteries or some power source on to the end of a USB cable and expect it to charge the device. That's not how AC power works. Unless you have some type of circuitry in between the batteries (capacitors, inductors, resistors, etc) and the device to control current flow either nothing will happen or you can potentially damage the device.
  10. SilverShip

    SilverShip Well-Known Member

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    Most likely the latter.

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