Problems with LG G3

Have the charging station bought, due to the many pos- reviews. Unfortunately, doing this also a satisfactory service to the G3. Although the station begins to load, light will also blue, but there are still quite frequent disconnections where the display of the G3 briefly goes to and then further charges. It charges the phone also full, but I do not know how good that is for the battery every time to interrupt the charging process. Especially as the station does not stop charging when the unit is full.
There were already tried many power supplies and cables, all the same. But it really even supposed to work on a 500mA USB port of a PC, the idea is actually more moderate. But perhaps liegts the unit. I can test it unfortunately not, because otherwise I do not own equipment with QI-charging function.