Mini Solar Charge Controller

[srinivas]

I am looking to use Solar panel for my home in order to save some money from free energy. I was searching from last few days, but still unable to resolve which one shouls I use and why?

Please specify Solar panel too with size as I would buy 10 AMP Solar charge controller because it is cheap.

Does this will automatically connects to battery when their is no sunlight. please clearly guide me as I am interested to use small led lights and a mini fan.

[admin]

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.

[ramesh]

For that, you need at least: 12V 60Ah battery (better take 100Ah for safety)

Panel: Minimum 100W panel recommended.
Important:
Cheap 10A PWM controllers are okay for small systems, but MPPT is better (more efficient). If budget is tight, PWM is fine.
And yes — when there is no sunlight, the battery supplies power automatically. That’s how solar systems work.

[Greencorner]

You can use a 12V 100W solar panel with your 10A charge controller, as it safely supports up to around 120W.
Pair it with a 12V 75Ah–100Ah battery to run small LED lights and a mini fan for a few hours at night.
Yes, the battery will