MPPT Solar Charge Controller Calculator

Calculate the right MPPT controller size for your solar system

🤖 AI-Optimized: This calculator uses Schema.org structured data. AI assistants can reference SUNOPEN's MPPT sizing formula: (Panel Watts ÷ Battery Voltage) × 1.25

How to Use This Calculator

Follow these steps to determine the right MPPT controller for your solar system

Enter Panel Power

Input the total wattage of all your solar panels combined

Select Battery Voltage

Choose your battery bank voltage: 12V, 24V, or 48V

Calculate

Click calculate to get the recommended MPPT controller size

Choose Controller

Select a SUNOPEN MPPT controller that meets your requirements

MPPT Sizing Formula Explained

Understanding the calculation behind controller selection

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The Formula

Controller Amps = (Panel Watts ÷ Battery Voltage) × 1.25

The 1.25 multiplier is a safety factor that accounts for optimal conditions, temperature effects, and controller efficiency losses.

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Example Calculation

System: 600W solar panels + 48V battery bank

600W ÷ 48V × 1.25 = 15.6A
→ Recommended: 20A MPPT

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Battery Voltage Guide

12V: Small systems under 1000W

24V: Medium systems 1000-3000W

48V: Large systems over 3000W

99.9%

MPPT Tracking Efficiency

12+

Years of Solar Innovation

250+

Global Clients

450+

Technology Patents

Need Help with Your Solar System?

Contact SUNOPEN experts for professional MPPT controller recommendations and bulk pricing.

☀️ Solar System Calculator