I would like to hire an Electrical Engineer

A portable cell phone charging station ideal for lounging areas, restaurants, bars, schools, trade shows and retail locations. This station will be able to sit on a table with a revolving base because there are no wires. There are two ways for this design. You can have the wireless portable station designed in two ways. First, the station can sit stand alone and when the battery life is low you can change the entire station. Secondly, the station can be separate from the battery system. When the battery life is low you can change out the battery and not the entire station. Also, I want to find out how this also can be solar I would like for this to be solar. IF possible, how long a charge you can get from a solar cell phone charger?