I just picked up one of these so the next time I go to a convention and use my !@#$% smart phone all day I won't find myself getting a low battery alert. Right now I've got my Bold plugged in to this toy, running a frakking movie and running Bluetooth and the thing is still charging the battery! The dingus comes with a plethora of adapters for different devices. As long as what you have can take power from a USB port (that's +5 VDC to the uninitiated), this baby can power it. Worth $40!