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QB-Hi 4-11kW Off-Grid Solar Inverter 220V Single Phase

The IDEEI QB-Hi series is a single-phase off-grid solar inverter (4kW-11kW, 220/240VAC) powered by solar panels only — no battery, no grid connection — for daytime use. Up to 99% efficiency, 160-390VDC MPPT and a single IGBT power stage drive daytime loads directly, eliminating battery cost and maintenance.

  • Battery-free PV-to-load design — drives daytime appliances directly from solar panels, no battery cost or maintenance
  • Up to 99% maximum conversion efficiency with 160-390VDC MPPT working range
  • Four power ratings in one series: 4kW / 5.5kW / 7kW / 11kW, single phase 220/240VAC pure sine wave output
  • 1.2x sustained overload capacity handles motor and compressor startup surges
  • Built-in DC SPD plus full protection against reverse polarity, short circuit, leakage and over-temperature
  • Rugged metal casing with IP21 rating, forced fan cooling, and real-time LCD monitoring
Available Power Ratings: 4kW 5.5kW 7kW 11kW
Price range: $73.00 through $130.00 In Stock
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QB-Hi 4kW-11kW High-Efficiency Off-Grid Solar Inverter Series

The QB-Hi series is an advanced off-grid solar inverter lineup covering 4kW, 5.5kW, 7kW, and 11kW models, designed for direct solar-to-appliance power. It runs on solar panel power only — no battery, no grid connection — for daytime use, built around a proven single IGBT power stage. With a max conversion efficiency of 99%, the series is the ideal solution for powering essential daytime loads in homes, farms, remote cabins, and monitoring stations directly from solar energy.

Industrial-Grade Features

99% Efficiency & Battery-Free Operation

  • Pure PV-to-Load: Specifically engineered to drive loads directly from solar panels — solar panel power supply only, no battery and no grid connection required.
  • Daytime-Use Design: Purpose-built for daytime operation with a reliable single IGBT power stage, eliminating the cost and maintenance of batteries.
  • Maximum Energy Harvest: Up to 99% conversion efficiency ensures optimal utilization of every watt generated.
  • Wide Voltage Range: 160VDC-390VDC MPPT working range for versatile solar array designs.
  • Low Voltage Startup: Reliable operation starting from 250VDC low voltage input.

Comprehensive Protection & Reliability

  • Built-in DC SPD: Integrated surge protection device protects the system from lightning and voltage spikes.
  • Multi-Layer Safety: Full protection against DC reverse polarity, AC short circuits, leakage current, and over-temperature.
  • Rugged Design: Metal casing with IP21 protection and forced fan cooling for stable performance in harsh environments.
  • Overload Handling: Supports 1.2 times sustained overload to handle motor and compressor startup surges.

Smart Operation & User Interface

  • One-Click Intelligence: Simplified management via an intelligent switch for easy operation.
  • Real-Time Monitoring: Humanized LCD interface displays real-time PV input, load status, and operating modes.
  • Pure Sine Wave: Clean 220-240V AC output safely powers sensitive electronics, fans, and small pumps.
  • Mode Selection: Features 3 output mode options to optimize power delivery based on load needs.

Technical Specifications — QB-Hi Series

Parameter Hi-4KW Hi-5.5KW Hi-7KW Hi-11KW
Rated Output Power 4KW 5.5KW 7KW 11KW
Rated Output Current 18A* 25A 33A 49A
Max Input Voltage 400VDC
MPPT Working Range 160VDC–390VDC
Maximum Efficiency 99%
Rated Output Voltage 220/240VAC
Output Frequency 45Hz / 55Hz
Protection Functions DC Reverse, AC Short, Lightning, Leakage, Over-temp
Cooling System Metal Casing + Forced Fan Cooling

*4kW current value calculated at 220VAC nominal; other values per manufacturer datasheet. Solar panel power supply only — daytime use, no battery or grid connection.

Recommended Applications

Daytime Essentials

  • LED Lighting, TV, and Laptops
  • Fans and energy-efficient refrigeration
  • Ideal for areas with reliable daytime sunshine

Remote Infrastructure

  • Remote monitoring and telecomm stations
  • Direct-drive small irrigation pumps (up to 1HP)
  • Mobile clinics and temporary field offices

QB-Hi Series Selection Guide

4KW: Budget-friendly entry point for essential daytime loads.

5.5KW: The balanced choice for homes with medium-sized pumps or mixed loads.

7KW: Higher capacity for frequent motor starting and larger appliances.

11KW: Maximum power for heavy-duty daytime farm and industrial machinery.

Need a Bulk Quote or Model Selection Help?

Standard models can be ordered directly at the listed price. For bulk orders, project configurations, or model selection based on your motor nameplate, our engineering team responds within one working day.

Email: info@vfdinverters.com | WhatsApp/WeChat: +86 183 5724 1165

Power Rate4kw、5.5kw、7kw、11kw

Need Help Selecting a Model?

Our engineers will recommend the right configuration for your application.
Tel: +86 183 5724 1165 (WeChat / WhatsApp)  |  Email: info@vfdinverters.com

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