The iPhone, Now in Green(er)

Inside each of the more than one million 3G iPhones sold so far, you'll find a lithium-ion battery. No big surprise there. But what's different here from early model iPhones is that the batteries are not soldered in place. That's good news. It means that when your iPhone has a dead battery, you can simply get a new battery, rather than sending the whole thing back to corporate HQ, or dumping it in the trash. And speaking of trash, there's more good news on that front: an unsoldered battery makes a phone easier and more economical to dissemble and recycle.