My laptop is an ASUS K53. It is designed to charge the battery and the battery is charging ...
The problem is the parasitic loading (at the socket on the PC). There are so many that the display on my second monitor (VGA) is disturbed.
Naturally, if I unplug the charger, there is no parasite.
For my use of the laptop in the docking station (PC screen + keyboard), it's really not a good product.