The Liberty 2 Pro UPDATED version says that they support wireless charging, however I have not been able to get them to charge like that yet! I have read all the information that came with them and I have not found anything yet about this. If anyone has any suggestions or more info, please feel free to share! 
Wireless charging doesn't work
What charger are you using?
I also have the pro updated as well but you know I have not tried to charge them wireless charging yet. There should not be an issue with it but if I remember I will give it a try and look at the info to make sure they are able to do wireless charging.