Nimomo 5W Solar Panel Practical Mini Solar Panel with Portable Cooling Fan Photovoltaic Solar Panel Set for Greenhouse

The fan starts running when it is plugged into the solar panel, and can also draw power from other USB devices, such as power banks, computers, etc. Portable solar panel, small size, easy to carry, no battery, ultra-quiet green energy, environmentally friendly. There are no rechargeable batteries in the fan, you can use a power pack if you need the fan to work at night. When the fan is connected to the solar panel, the way the fan works depends on the sunlight, and when the sunlight is strong, the fan runs fast.