• Description

EG4 Solar Charge Controller MPPT | 500VDC 100A | MPPT100-48HV

The EG4 MPPT100-48HV is a simple, reliable solar charge controller designed to help you get more usable power from your solar array. It converts higher-voltage solar input into the lower, steady voltage needed to safely charge a 48V battery bank, making it a strong option for expanding or improving a new or existing solar system.

Key Benefits

  • Maximizes Solar Harvesting: Uses MPPT technology to pull the most available power from your solar panels for more efficient battery charging.
  • High-Voltage PV Input: Supports up to 500VDC open-circuit voltage, helping reduce the need for combiner boxes in certain system designs.
  • Fast Battery Charging: Delivers up to 100A of charging current, with adjustable settings from 0A–100A.
  • Designed for 48V Battery Systems: Built for 48V nominal battery banks with a 48–62VDC charging range.
  • Built-In Protection: Includes PV array DC disconnect and battery breakers for added system safety.
  • EG4 Battery Communication: Communicates with EG4 batteries through the RS485 BMS port when used with non-EG4 compatible inverters.

Use Cases

The EG4 MPPT100-48HV is ideal for adding more solar charging capability to off-grid, backup power, cabin, RV, and battery-based solar systems. It can also be used to expand an existing system where additional PV input is needed to support faster charging and better energy production.

Tech Specs

  • PV Input: Up to 500VDC
  • Max PV String Current: 22A
  • Battery Voltage: 48V nominal
  • Charging Voltage Range: 48–62VDC
  • Communication: RS485 BMS port
  • Protection: Built-in PV disconnect and battery breaker

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.
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Feedback From Our Customers

At Green Vista Living, we pride ourselves on delivering top-quality products and exceptional service to solar professionals and homeowners alike. Here's what our customers have to say about their experiences with us.

Kevin Leary
May 18, 2025
★★★★★

Incredible Tech Support from Anees of Green Vista Living. Exceptional service and went above and beyond on every question.

Bryan Cunningham
Off grid Kit • Dec 21, 2025
★★★★★

Shipment was slow due to high demand, but the team kept me informed and ensured everything arrived properly.

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