How to install:
1. First, open the car door. Stand outside the car, pull the window halfway down, and fix the short strip on the far right side of the window.
2. After fixing the short strip, unfurl the exhaust fan to make the solar panel and the exhaust fan body form a certain angle. Overlap the recesses of the exhaust fan with the window. Make the exhaust fan close to the short strip, adjust the proper position and fix it.
3. Take out the long strip, measure the length of the window on the left side of exhaust fan. Cut out long strip of the same length and fix the long strip on the car window, avoid gaps in the window.
4. Inside the car, press the car exhaust fan against the car window to fit it with the gap of the strips on both sides.
5. Close the window slowly with your hand on the exhaust fan.
6. Adjust the angle of the solar panel, make it face the angle of the incidence of the sun. Make the solar panel fully illuminated, and charge the nickel-metal hydride battery.