1. The fan starts to run when it is plugged into the solar panel, and it can also be ed from other USB devices such as mobile supplies, computers, etc.
2. When connected to a solar panel, the operation of the fan depends on the sunlight.
3. When the sun is strong, the fan will run quickly. When the sun is not strong enough, the fan may run slowly or even fail to work.
4. There is no rechargeable in the fan. If you need the fan to work at night, you can use an external