In the two weeks since our return from Houston, I have not plugged in my 3G iPhone once, and no its not dead. Ever since picking up my Incase Powerslider I have used it exclusively as my charger. I use my iPhone so much that I would have to charge it at least once during the day and then again at night. With the PS, I either carry the iPhone in the charger and enjoy a much longer battery life, or when my iPhone gives me the 10% warning, I slide it into a fully charged PS and I am still free to roam around cord free while my iPhone is recharging. I haven't tried the sync-through option because with MobileMe I don't really need to sync my iPhone except about once a month. The PS case has a nice non-slip grip to it and the battery indicator on the back is perfect. When recharging the iPhone, the base of the PS gets warm but not too warm. It is not so warm that you cannot cannot hold it in your hand. (For those of you that remember how hot a LifeDrive can get, this is no where near that hot.) My only gripe is that at the very bottom of where the two pieces slide together, there is a very minute wiggle room that creaks ever so slightly when squezzed. If this issue weren't there, I'd give this accessory a full five stars, as it stands, I give it a 4.8 out of 5.