In many cases running an underground cable from your house to the building is the most economical way to go.
Attach fan to solar panel.
Strip the wires back enough so that you can connect them to your solar panel.
Knowing the specs of both the panels and the fans would be helpful.
If you have a 150 ah battery and get about eight hours of sunlight a day the panel output should be at least 120 watts to ensure the battery charges fully during the day.
The solar charger circuit board comes with a usb port dc jack for the solar panel and two jst ports already attached to the board.
Salvaging the cpu fan from an old computer is generally easy and this component can be put to use around the house while the rest of the machine is recycled.
The battery comes with a jst plug and will attach to the jst port labeled batt the solar charger comes with a jst pigtail cable which will connect to the load port and be soldered directly to the powerboost input terminals.
Attaching a solar panel to a cpu s fan.
Video shows the basic hookup of a standard 80mm computer case fan to a solar panel.
If it pulls air inward swap your wires around.
If the fan blows air forward you have it wired correctly.
It would be good to put a dc controller in between panel and dc fan.
I use these fans in many things that i make so i wanted to cut this video to show the basic hook up from fan to.
In order to run a solar fan directly from solar panel without battery you need to select whole system carefully.
Western harmonics solar powered fan kit 1505 hg features a great fan running directly off a 10 watt solar panel.
How to power fan directly from solar panel.
The little 12v computer type muffin fans would need to be tested as some models do not like to start from a slow voltage rise others have a little timer circuit that repeats the start cycle and that style will start.
But if the building is a fair distance from the house so that wiring it would be a hassle or a large expense consider a solar powered system.
D o you have a shed or other outbuilding that could use light and or power.
Great for a variety of uses.
If you do not know which one is which connect the panel to the fan and go out in the sun.