I honestly don/t know where to start so let's go with....amazing, convenient and does everything it says and more. I have had my Iphone 3GS since December of 2009 when I received it as a X-mas gift and it is the best phone I have ever used. Now the one drawback to having an Iphone is since there is "an App for everything"...there is also another reason for my battery to drain. I have a case...check....I have my friends wherever I go...check.....now where is that wall socket....wait I am at a concert...5 percent battery..yikes....well after searching through many products and solutions I received a newsletter about deals online and came across this item from New Trent. I charged my phone fully 4 times....even though their description says only three I somehow managed four. Also, experts say you should not leave your phone plugged in over night because it can hurt your battery since leaving it in all night keeps charging way after it is fully charged. I did not know this but this device actually shuts off when your device is full. So if I am to lazy to get up to find a wall socket across the house or I am on a airplane ride or even just at a family function I will always know New Trent has my back.