Product description: ACOPOWER 120W Foldable Solar Panel Suitcase features an extra portable design with durable quality for outdoor activities. In the pocket of the suitcase, it has a 20A LCD waterproof charge controller, Alligator clamps for battery charging, a USB QC 3.0 port, a USB-C(Type C) port, a USB, a DC to DC adapter, different size of connectors connector two pairs of MC4 Connectors where the charge controller could be removed, or an extension cable could be insert, and SAE to SAE adapter where it can be connected to the RV directly. Work As a Solar Panel Only: · Using the corresponding connector(Includes different size of connectors) with your solar generator · Start to charge Work as a Solar Panel Kit: Connect the red alligator clamp to Positive while black to Negative · Start to charge · Battery Type Options: Lithium-ion, LiFePO4, LTO, Gel, AGM, Flooded, Crystal and Calcium. · 12 Voltage Battery only Note: If your battery voltage is too low, (Lower than 3V) it could not work. The charge controller avoids overcharging and discharging and protects your battery. Test the product by connecting a proper battery firstly. 120W Solar Panel Specification: (Made of SunPower Solar Cell) Voltage at nominal power [V] Vmp 18V Current at nominal power [A] Imp 5.97A Open-circuit voltage [V] Voc 24.6V Short-circuit current [A] Isc 6.32A Unfolding Size: 56.7x22x0.2inch Folding size: 22x17.5x1.2 inch Weight: 8.4lbs ProteusX 20A PWM Waterproof Charge Controller Specifications: Grounding: Common Negative Nominal Voltage: 12V/ 24V DC Rated Charge Current: 20A Max. PV Input Voltage: 50V Battery Start Charging Voltage: 3V Dimensions: 5.59x 3.7x 1.06 inch Weight: 1.1 lbs. | ACOPOWER LTK 120W Foldable Solar Panel Kit w/ ProteusX 20A Charge Controller in Black