EG4 3000EHV-48 Off-Grid Inverter | 3000W Pure Sine Wave | 5000W PV Input | 48V Battery Charger | MPPT Solar Controller | Parallel Up to 12 Units

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EG4 3kW Off-Grid Inverter | 3000EHV-48 | 3000W Output | 5000W PV Input | 500 VOC Input

3000EHV-48's Design Improvements:

  1. Larger Battery Terminal Connections(Supports up to 2 AWG)
  2. Minor Improvements to the exterior design
  3. Fully compatible with V1 units(may require a simple firmware update, can be found on www.eg4electronics.com)

The EG4 3000EHV-48 is a 3000W all-in-one, multi-function inverter/charger; it combines the capabilities of an inverter, MPPT solar charger, and battery charger to offer uninterrupted power support in a single, portable-sized package. Its comprehensive LCD display offers user-configurable and easy-accessible button operation including battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.

This compact powerhouse is perfect for small barn builds and small critical loads panels as it easily supports lights, an average fridge/freeze, or a 9K BTU Mini Split.


Key Features

  • Pure Sine Wave Inversion – Provides clean and stable 3000W continuous output for sensitive electronics.
  • High PV Input Voltage – Supports up to 500VDC max input, reducing wiring costs and eliminating the need for a combiner box.
  • Scalable Parallel Operation – Connect up to 12 units for increased capacity in single-phase, split-phase, or three-phase configurations.
  • MPPT Solar Charge Controller – Built-in MPPT controller optimizes solar charging for 97% efficiency.
  • Wide Battery Compatibility – Works with 48V battery systems, including lithium, AGM, and flooded lead-acid.
  • Overload & Short Circuit Protection – Protects connected devices from power surges and faults.
  • Rapid Transfer Time – 10ms UPS mode ensures a seamless switch to battery power.
  • Lightweight & Compact – Weighs only 18 lbs, with a small footprint for easy installation.
  • User-Friendly LCD Display – Configurable settings for battery charging, AC/Solar priority, and input voltage.
  • Reliable Backup Power – Ideal for homes, cabins, RVs, and off-grid solar installations.

Product Specifications

Inverter Mode

  • Rated Power: 3kVA / 3000W
  • Output Voltage: 110/120V ±5%
  • Output Frequency: 50Hz / 60Hz (Auto Detection)
  • Surge Capacity: 6000W (5 seconds)
  • Efficiency: 94% (Battery to Inverter), 97% (PV to Inverter)
  • Overload Protection: 5 sec @ 150% load, 10 sec @ 110%-150% load
  • Output Waveform: Pure Sine Wave

Solar Input (MPPT)

  • Max PV Input Power: 5000W
  • MPPT Voltage Range: 120VDC - 450VDC
  • Max PV Open Circuit Voltage: 500VDC
  • Startup Voltage: 120VDC
  • Max Charging Current (PV): 80A
  • Number of MPPTs: 1

Battery Charging

  • Nominal DC Input Voltage: 48V
  • Bulk Charging Voltage: 58.4V (Flooded), 56.4V (AGM/GEL)
  • Float Charging Voltage: 54V
  • Overcharge Protection: 63V
  • Charging Algorithm: 3-Step
  • Max AC Charging Current: 60A
  • Max PV+AC Charging Current: 80A

AC Input & Output

  • Nominal Input Voltage: 120VAC
  • Input Frequency: 50Hz / 60Hz (Auto Detection)
  • Max AC Input Voltage: 150VAC
  • Transfer Time: 10ms (UPS Mode), 20ms (Appliances Mode)
  • Efficiency (Line Mode): 95%

Parallel & Scalability

  • Parallel Support: Up to 12 Units
  • Parallel Communication: CAN
  • Power Imbalance Ratio: <5%
  • Transfer Time (Parallel Mode): <20ms

Installation & Environmental

  • Operating Temperature: -10°C to 55°C (14°F to 131°F)
  • Storage Temperature: -15°C to 60°C (5°F to 140°F)
  • Humidity: 5% to 95% (Non-condensing)
  • Altitude: Up to 1,500m
  • Cooling: Fan
  • Enclosure Rating: IP21 (Indoor Use)
  • Noise Level: <70W idle power consumption

Dimensions & Weight

  • Size: 420 x 340 x 142mm (16.5 x 13.4 x 5.6 in.)
  • Weight: 8.2kg (18 lbs)

Certifications & Warranty

  • Certifications: CE
  • Warranty: 3 Years

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