hi. my dad bought me, my brother and himself and ipod adapter. me and my brother both have nano's. my dad has a touch. the adapters were bought from ebay, and although not official apple mains adapters, they resemble them in size etc. mine and my brothers nano's work with the mains adapter, and they charge fine. however, my dad's second generation touch has an on-screen message saying something along the lines of "this device does not support charging" with a yellow triangle and exclamation mark. however, it does charge the ipod. i am wondering if these adapters are safe to use or could they damage the batteries in any of the ipods? as i said, they seem to work fine with the nano's, just not the second gen touch. is charging controlled by the ipod itself or what? thanks.