[QUOTE="JF Mezei"]\nRod Speed wrote [/QUOTE]\n[QUOTE]\nRegulations require electronics be embedded with the cells\nto cut off power to prevent over charge and over discharge.[/QUOTE]\n\nNot with the internal battery in the iphone, the\nelectronics is in the iphone, not the battery.\n[QUOTE]\nFor end of production models, it is quite likely that a\nlarge last batch of batteries is manufactured for spares.[/QUOTE]\n\nIts never done like that with stuff like batterys and\nthe 4S isn't an end of production model anyway.\n[QUOTE] \n\nNope.\n\nRegulations require the overcharge/discharge\nprotection to be in the battery to prevent fires.[/QUOTE]\n\nNot with INTERNAL batterys which aren't\nsupposed to be changed by the owner.\n[QUOTE]\nThis ranges form the latop problems of a few years\nago all the way to the 787 fires due to batteries.\nThose electronics are absolutely required.[/QUOTE]\n\nNot with INTERNAL batterys which aren't\nsupposed to be changed by the owner.\n\nThe electronics is in the phone itself and\nthe battery can't be charged independently\nthe electronics in the phone is always there\nwhen the battery is charged.