The function of a charge controller is to regulate the charge going into your battery bank from your solar panel array and prevent overcharging and reverse current flow at night.
How to choose right solar charge controller.
The controller should also reduce the voltage to a trickle charge float voltage when batteries are fully charged to prevent overcharging.
Similarly pwm charge controller may not suits well in every size of the system.
Solar charge controller functions.
I have just burned my hybrid wind solar charge controller wind regulator 12v 24v charge controller everything inside melted couple lines burned out and one of the brains completely burned out.
This means if your battery is full it stops the charging and if your battery is reaching an unhealthy.
Be remember to choose the right controller that fits your system most the solar battery charger is rated by amp normally the most welcome rate in the market is 30 amp 40 amp and 60 amp for a common home solar system.
If you are using one or more solar panels to charge your batteries you will need a quality charge controller with multi stage charging capability.
An mppt charge controller may be doing well in one location but is not effective in another.
It does this by using a transistor to shunt the pv charging circuit.
The right solar battery controller rating influences the ability and performance of the solar power system.