portable solar system 1.pure wave output. 2.12VDC,110V/220VAC output. 3 ... : Monocrystalline silicon . Battery: Lead-acid battery . System Controller: Provide intelligent control and protection of the system, including automatic switch on/off (timer ... level monitoring and optimizing, the prevention and protection of the system from overcharge, over-drain, electrical short-circuit, overload and reversed ...