A solar charge controller is a component that helps manage the power that is going into the battery store from the solar panel.
Battery charge controller solar panel.
For example your solar panel delivers 18 volts dc and 5 8 amps to the charge controller and the wire length is 40 feet.
Most 12 volt panels put out about 16 to 20 volts so if there is no regulation the batteries will be damaged from overcharging.
It safeguards the deep cycle batteries from being overcharged during the day.
A charge controller or charge regulator is basically a voltage and or current regulator to keep batteries from overcharging.
Solar charge controllers also prevent battery drainage by shutting down the system if stored power falls below 50 percent capacity.
Also you can use mppt charge controllers with strings of solar panels but not pwm controllers.
However the same 40a charge controller used with a 48v battery can be used with a much larger solar array up to 2080w.
It regulates the voltage and current coming from the solar panels going to the battery.
20a solar charge controller 50ah 150ah battery 12v 20a 100v mppt 12v battery 250w max solar 1 x 250w.
Both will regulate the maximum voltage that the solar panel can send to the battery but an mppt charge controller can be up to 30 more effective at storing and transferring energy than pwm models.
The charge controller closely monitors the battery voltage and automatically reduces the flow of energy to the battery bank.
This helps preserve the life and health.
If you connect your solar array to batteries without overcharge protection you could compromise the life of your batteries.
Voltage drop in a single panel system as you can see in the calculation the voltage drop is 4 09 which will reduce the overall power delivered to the charge controller.
Zeallife solar panels charge controller 8a battery regulator for 12v solar battery charger solar battery maintainer and 12 volt batteries power kit safe protection 4 1 out of 5 stars 538 14 95 14.
Zeallife solar panels charge controller 8a battery regulator for 12v solar battery charger solar battery maintainer and 12 volt batteries power kit safe protection 4 1 out of 5 stars 540 14 95 14.