I received a Griffen PowerDuo Reserve for Christmas which says it is compatible with the 1st and 2nd iPod Touch, iPod Classic&Nano, and iPhone-iPhone 3g, and iPhone 3gs.... I own an iPhone 4, and iPad... Before I return it, does anyone know if it will work with either of these. My only hope is for the packaging to be outdated, or the new devices to still have the same voltage or whatever. If Not, what would be the best replacement... I saw the Ventev PowerCELL, and it looks like it will do the job. Thanks for any help!