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MPPT charge controller can boost the power of solar panels by up to 30%; 12ft MC4(female & male) solar PV cable allows the easy and professional connection between modules; 6ft long cables with clamps provides the easy connection to batteries; Z Type Mounting Brackets allow D0-It-Yourself solar panel installation in minutes; Dimension of each 20w solar panel: 25.2inx12inx1.4in (640x306x35mm);Maximum Power (Pmax) 60Watts;