So have 2 batteries for my Samsung Galaxy S3 LTE, wanted to load a plug and the other load in the cell phone via the USB port. But this does not seem to provide enough power to charge the phone (only 800mA as specified). The original charger has indeed 1000mA, so it can not function in this kidney.
Conclusion: 2 stars because the battery is charging, USB charging does not work out. Too Bad. Once again threw money into the trash.