model: 2FCM048 1. usa sunpower high efficiency solar cells 22.4%, no glass, light weight and durable. it is be automatically clean when wind blowing or rainy dropping; 2. one flexible solar panel 100w, on top of car size:l4,690mm*w1,500mm, can put total 8pcs*100w=800w power; 3. flexible solar panel energy to backup power dc +ac power to charge.