So this battery for the iphone 3g/3gs is pretty damn big. But I would not go anywhere without it. I use up my iPhone battery pretty fast from heavy use. Having this battery around will allow me to charge it fully about 3 times. Or i can leave the phone in the battery and get a good 4 hours of constant data (which i have tested and yes it gets that).

It has an extra usb port at the bottom so i can charge up any usb device which comes in very handy for charging my bluetooth headset or my sons iPod Touch.

There is a light on the back as well which is very bright and uses almost no battery. This has come in very handy on many occasions for using as a flashlight. I have never used it for its designated purpose of being a “flash” for the camera because it seems too awkward. But as a flashlight, it is great.

I HIGHLY recommend this battery to anybody with an iphone that will use up the battery in less than a day as i often do.

http://fastmac.com/iv.php