Check the listing for details. 400 Watts Solar Panel Kit 100A 12V Battery Charger w/ Controller Caravan Boat RV. Color: Black, Condition: New. Listed at 26.35 USD. 400 Watts Solar Panel Kit 100A 12V Battery Charger w/ Controller Caravan Boat RVFeatures : Solar Panel Kit Use Of Good-Quality Materials, Built-In Multiple Intelligent Protection Systems To Ensure That The Inverter Is Fully Protected During Use,Which Is Stable And Reliable. It Has a High Conversion Rate. Solar Panel With 5V Dual Usb Interface To Meet Charging Needs When Going Out, Camping, Picnic, And More.It Can Charge Multiple Brands Of Mobile Phones /Electronic Devices At The Same Time Solar Panels Are Devices That Convert Solar Radiation Into Electrical Energy Directly Or Indirectly By Absorbing Sunlight. Compared With Rechargeable Batteries And Ordinary Batteries, Solar Panels Are More Environmentally Friendly And More Energy-Efficient. 400 Watt Solar Panel Kit For Battery Maintainer & Trickle Charging With 100A Solar Charge Controller, It Can Intelligently Charge Various 12V Batteries, And Provide All-Round Protection For Batteries Such As Overcharge, Overdischarge, Overvoltage, Overcurrent, Short Circuit, And Reverse Connection. Integrated Voltage Regulator Module, 5V Dual Usb Voltage Regulator Output.Widely Used In Cars, Motorcycles, Rvs, Trailers, Boats, Boats, Snowmobiles, Trolling Motors, Snow Plows, Lawn Mowers, Golf Carts, Tractors, Door Openers, Pumps, Farm Equipment Or a Variety Of Applications 12V Battery Charging And Maintenance Of Grid Solar Systems Using 12V Batteries.NOTE: This product is suitable for low-power products with 5V power supply or low-power products with 12V power supply. Specification:Type:Portable Solar Panel Kit Material: Panel: PET + polycrystalline silicon cell Power: 20WWaterproof rating: IP65Solar Energy Conversion Rate: 20%NOCT (Nominal Operating Cell Temperature): 40-85°CUSB output voltage: 5VSelf-consumption: