Solar Battery Charging Kit 20W Monocrystalline Silicone Solar Panel 18V 50A MPPT Dual USB Voltage Stabilizing Controller for Car RV Feature:1. High Charging Efficiency: The solar panel uses 30% high conversion crystalline silicon material, which greatly improves the charging efficiency of the solar charger.2. Stable performance: high conversion efficiency, good output efficiency, low light performance and strong application, high stability and durability.3. Lightweight and Portable: The solar panel charger is lightweight, about equal to the weight of a mobile phone, easy to carry and convenient to use.4. Easy to use: Place the solar panel in a position facing the sun, the corresponding interface on the wiring can be connected to the product requiring power.5. Scope of application: battery charging kit is applicable to car batteries, cars, ships, aircraft, outdoor agriculture, planting, tourism and solar street lamps. Specification: Item type: solar battery charging kit Material: ABS Gross weight: 704g / 24.8oz Solar panel size : approx. 35.5 x 24.3cm / 14.0 x 9.6in (without powerbank function) Solar panel power: 20W Controller: 50A Output: 18V Interface: Type-C interface x 1, USB interface x 2, DC interface x 1 Package list: 1 x Solar panel 1 x connector OBD 1 x Ignition Coil 1 x Mount Clip 1 x Controller 4 x Suction Cup 2 x Manual Note: No power bank function How to use: Place the solar panel in the sun to use it