Hi @StefanoSerra1986 and welcome to the Support Forum! 
Currently there is three models by Sony on the market supporting wireless charging, also known as QI Charging (XZ2, XZ2 Premium and XZ3).
Unfortunately there is no way to charge Xperia L1 wirelessly due to the fact that the model doen't support QI charging. If you want to find out more about more about your Xperia L1 and see full specifications for the phone, please click here.
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