I think the best thing, to load the powerbank in the panel is, to use the RJ45 cable. In one of the first editions of the panel Timo used a wireless charger. But it got very warm (>80 degrees!) so he decided not to use it. So take care of the temperature. Don't burn you workshop or house. You can try it, if you buy an good wireless charger.
I moved the wireless charger outside and underlayd it with an aluminium tape. I also added an eye hole to have a look at the charging state.
The author remixed this model.