02-18-2026, 01:07 AM
Since you want to run small LED lights and a mini fan, a small 12V solar system is enough.
Because you are buying a 10A charge controller, you should use:
12V 100W solar panel
12V 50Ah or 75Ah battery (deep cycle recommended)
10A PWM charge controller
A 100W panel is perfect because:
10A controller × 12V ≈ 120W max panel size.
So don’t buy more than 120W panel with that controller.
Yes, the system automatically uses the battery at night.
During daytime → panel charges battery.
At night → battery powers your lights and fan.
Just make sure:
All components are 12V
Battery is connected before panel to controller
Use proper wiring thickness
This setup is good for 3–4 LED bulbs and one small DC fan.
Because you are buying a 10A charge controller, you should use:
12V 100W solar panel
12V 50Ah or 75Ah battery (deep cycle recommended)
10A PWM charge controller
A 100W panel is perfect because:
10A controller × 12V ≈ 120W max panel size.
So don’t buy more than 120W panel with that controller.
Yes, the system automatically uses the battery at night.
During daytime → panel charges battery.
At night → battery powers your lights and fan.
Just make sure:
All components are 12V
Battery is connected before panel to controller
Use proper wiring thickness
This setup is good for 3–4 LED bulbs and one small DC fan.