How to Size a Charge Controller for your system

Whenever we talk about how to size a charge controller, the very first thing that comes to mind is what is a charge controller? It is a controller which limits the pace of current that goes to and from the battery pack. Charge controllers are fundamental to avoid totally depleting a battery. Such activity can diminish battery execution and the life expectancy of a battery drastically.

Features of charge controllers:

• Overt Overcharge
• Control calculation
• Temperature remuneration
• Equalization charging
• Meters and markers for framework status and working data

The easiest way to calculate the size is using the equation below.

Example:

Take the number of panels x watts to get the total watts of the solar array.

You then divide it by the voltage of your battery bank to get amps

Add 25% to allow for cold temperatures and as always, round up.

Example: 2 x 300 watt solar panels in series = 600 watts / 24 VDC battery bank + 25% = 31.25 amps.