S3 does not charge when docked
I'm under the impression that since recently my AS351/12 (Android Docking Speaker) does not charge my Samung S3 anymore. The indicator on the phone tells me it is charging, but as I have turned on the battery percentage indicator I can easily see if the battery is charged or not.
When I dock my phone I of course play music, but after a few hours I noticed the battery was almost empty. How it can be, when it is on the docking station?
When I just bought the AS351/12 I noticed the phone was indeed charged, but as I just said I am under the impression that the phone is not charged anymore.
What can I do?