Average Customer Rating:
AT&T Zero USB Charger with Micro-USB Cable - 2 Pack (Refurbished)
Product Review (submitted on January 29, 2013):
We are pleased to have something work like it says it does! This charges until charge is full-- or uses electricity shall I say, until the the charge is full-- then while still plugged into outlet, it uses no electricity.
It has a blue light and a vibrate to let you know it's started, and the light goes off at the wall charger when it is complete!