What wind turbine I need

Most wind turbines need to be up 100' above the landscape and require uncomfortable amounts of wind to generate usable power..  In general, they are a non starter, with lots of mechanical maintenance requirements.

casanova said:

Hi, I am interesting in add a wind turbine system to just keep charged my batteries. I have installed a solar system. Schneider SW4024, conext 150-60 controller and a 24v battery bank consisting of 2 of 12v AGM 250Ah in series providing 24v...

In general most people here are from the US, aren't many great areas in the US for 'small wind' so yu may not find great advice here. 

Have you checked your area for it's normal/typical amount of wind? In general you need to have yor generator 30+ feet above any nearby trees, that means a tower 70-80 feet in many areas. Once up you will want to bring the wind turbine down or you up annually for maintenance.

Typically you will want a separate charge controller for the wind generator as it will need the ability to run a 'dump load' once the batteries are full, unlike solar, which can just be turned off,  A wind generator will continue to make power and need a place for it to go.

You might describe your system, I think a 24 volt 250 amphour battery bank or 6kWh battery bank would be undersized for most systems requiring a 3400/4000 watt inverter. I have a 4000 watt inverter and have about a 16 kWh battery bank. Also describe your loads, there might be a reason for the large inverter to battery bank ratio, perhaps a large well pump that doesn't run often and minimal other loads...

There are great areas for small wind, Ireland/Scotland have great wind resources and often minimal trees, and less sun.... So it turns the equation on it's head.