This Juice Pack Reserve is a compact battery case that protects your phone while providing extra power. It extends talk time by eight hours over the base capacity of the iPhone 6 and iPhone 6s. This Juice Pack Reserve by mophie comes with a Micro USB cable and can be bundled with a headphone extender and belt clip.
I got this for my daughter, she is always running her battery down on her iPhone 6. Appears to work as advertised, just wish it used the Apple Lightening connector to charge it, now you have to have yet another charging cord.