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    +86 18588870521

    • Home
    • About Us
    • Products 
      • All Products
      • PWM Solar Controller
      • MPPT Solar Controller
      • Solar Flood Light
      • Solar Street Light
      • Solar Inverter
      • Solar DC System
    • News
    • R&Q
    • Contact
    • …  
      • Home
      • About Us
      • Products 
        • All Products
        • PWM Solar Controller
        • MPPT Solar Controller
        • Solar Flood Light
        • Solar Street Light
        • Solar Inverter
        • Solar DC System
      • News
      • R&Q
      • Contact
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      • How to choose a solar charge controller size?

        Solar charge controller is a regulator that controls the charge and discharge current of solar battery. It is essential to prevent overcharging or over-discharging a battery. Then can prolong the battery's life span.

        But many people don't know how to choose a solar controller, Here we will figure out how to calculate a controller size.

         

        First, calculate the total watts of the solar array. Then divide it by your battery bank's voltage to get amps, add 25% to allow for cold temperatures and as always.

        For example: 4 pcs 100 watt solar panels in series = 400 watts / 12 VDC battery bank + 25% = 41.6amps. You would choose a 50 amp, 12 V Solar charge controller in this example.

        Note; These examples are simple calculation, usually suitable for small solar system, if your system is big with multiple strings, then you can contact us for more professional opinions.

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