Review on 🌞 Himino 20W Waterproof Solar Panel Battery Charger with USB Output Ports - Portable Solar Charger for Car, RV, Boat, Cell Phone & More by Wanick Palermo

I bought this to power a 5 watt fan. It did not work. When the fan was plugged into an outlet, it worked very well. When plugged into the panel it just made a ringing noise like it was receiving something, but not enough to get it spinning. I don't understand how the description says the panel can charge a car battery but can't even charge a tiny fan. The window I was looking at was in the sun and the entire panel was in direct sunlight.