inputs.text: great iphone charging - thing works great keeping iphone charged bicycle using gps usually drains phone battery quickly not problehem battery pack keeps phone battery 100 without glitch however not work charging batteries bluetooth headsets hooked press button start charging quickly stop charging like headset battery fully charged fix plug iphone one usb port headset battery usb simultaneously headset battery charge properly charged batteries headsets without little trick would give 5 starsoverall would reccommend battery pack