ReVIVE Series TwinPort 5000mAh DUAL USB Slim and Portable External Battery Charging Pack for HTC , Samsung , Motorola Smartphones and More!
This is a great little charger for the price.  It has kept my work phone topped off many times that I am at an offsite location and the phone is drinking power like there is no tomorrow looking for a signal.  It has also worked great for my personal phone.  On those instances where you find your phone is dead when you are needing to leave the house and that 5 or 10 minute ride to where you are going is not enough to do much good with a regular car charger.  It has been great to go to lunch with friends and 