Solar Charge Controllers for Solar Systems | The Sun Pays

Solar Charge Controllers – MPPT & PWM

Solar charge controllers regulate the power going from your solar panels into your battery bank. They are essential for protecting batteries, improving efficiency, and extending battery lifespan.

🔋 What Does a Charge Controller Do?

  • Prevents battery overcharging and deep discharge
  • Manages charging voltage and current to match battery chemistry
  • Protects against reverse current at night
  • Improves panel performance via MPPT (Maximum Power Point Tracking)

⚡ MPPT vs PWM: What’s the Difference?

MPPT (Maximum Power Point Tracking)

  • Higher efficiency (up to 98%)
  • Extracts more energy in cold, cloudy, or low-light conditions
  • Ideal for 48V systems or high-voltage panels

PWM (Pulse Width Modulation)

  • Lower cost, simpler design
  • Less efficient (~70%–80%)
  • Best for small systems and basic solar setups

🔧 Key Features to Look For

  • System voltage support (12V, 24V, 48V)
  • Battery compatibility (LiFePO₄, Gel, AGM, Flooded)
  • Load control outputs (for lighting or pumps)
  • Temperature sensors and auto-compensation
  • LCD display or app connectivity

✅ Applications

Use our solar charge controllers in:

  • Off-grid homes and cabins
  • Solar water pumps and boreholes
  • Camping and RV solar setups
  • Solar lighting and backup power kits

🛠️ Need Help Choosing the Right Controller?

Whether you're building a small DIY system or powering a large lithium bank, our team can help. Contact us at technical@thesunpays.co.za or call 012 734 0915.