Type RS-SL150P RS-SL200P Panel Power 120W/18V 150W/18V Material Monocrystalline silicon Monocrystalline silicon Solar cell efficiency 19-20% 19-20% Lithium battery Capacity 480WH 576WH Charge cycle times 2000 times Lamp head Luminous flux 8500-9000lm 10200-10800lm