This is the Solar charger that will come from the PJ Factory when a trailer is ordered with the solar charger option. Commonly used with PJ Trailer models D5, D7, D9, DL, D8, DJ, DS, DD, D2, FY, LY, SY, T1, TH, T5, T6, TF, T7, T8, T9, TD, Powertails, Hydraulic Jacks, Winches, etc. This is a great solar charger for any trailer with a 12v battery.