Review on 🔌 Coocheer Portable Solar Panel Charger 120W - Ideal for Camping Van, Portable Generator, Power Station, USB Devices, Cars, Yachts - 2 USB Ports & 1 DV Port Included by Bryan King

The last two days I have tested my panel under absolutely clear skies and bright sunshine. While I'm not as tech savvy as Ryan D., I measured the output voltage of my panel and found it to be 19.5 volts, but the panels' overall performance leaves a lot to be desired. As Dave Boyer says, my panel only puts out about 45W peak power (measured on my battery) through the 18V connection. As for the USB side, it works quite well. Both USB-A ports work as advertised. The USB-C port, despite being labeled Power Delivery, doesn't appear to be fully compatible. You get good output from the port, but devices (like my laptop) that require power delivery won't recognize the source and won't accept power. This is not a problem for less delicate devices like my phone powered by PD or no PD. I bought this panel because of the nominal size and the perfect combination of output ports. My battery can accept up to 60W of input power via the cylindrical DC input and an additional 30W via the USB-C input/output, for a total input power of 90W. I thought a 120 watt panel would be ideal as I would have plenty of input available and I could use the USB ports to power any number of my other devices without roaming for any reason. Unfortunately, this panel just doesn't work. I understand that the 120W power rating is not fully realized in real applications, but the 45W max power is terrible. Based on my own general testing and Ryan D.'s rigorous testing, that option is back.