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iPhone 3G and iPod/USB charging issue solved!!!
Ok I can confirm that the issue is related to the power draw available on the USB port. When you use the mini cable it draws enough for the interface to prevent charging. When you use an iPhone cable it charges, but slowly due to the 100ma provided by the interface.
Since the iPhone draws different amount of power depending upon the situation there may be cases where your in edge mode sitting idle and what the mini cable provides will eventually charge over a long period of time.
My solution, suplimemt the USB power provided with off the shelf stuff.
For about 15 bucks I got a USB car charger which provides 500ma (it also includes a spare house charger), I then used a USB extension cable made specifically for a USB wifi/3g modem which has 2 plugs. It's exact purpose is to allow the modem to pull power from 2 USB ports. I then plug one into the car USB and one into lighter USB charger and then plug the mini cable into the cable's jack for the modem. My iphone should be getting about 600ma or about the same as a house charger.
My iPhone charges all the time now and charges fast.
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 2008 MCSa in Mellow Yellow/Lounge Leather in Carbon Black with Convenience Package, Cold Weather Package, Premium Package, Sport Package with 17" web spokes, Anthracite Headliner, Steptronic Auto Trans, Anti-Theft System, Black Bonnet Stripes, Chrome Line Interior, Chrome Line Exterior, Door Caps in Chrome, Rear Fog Lamps, Park Distance Control, Foglights, Xenon Headlights, Navigation System, Custom 3m Clear Bra
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