4 kW Split Phase Off Grid Inverter Charger, 24V/48V

$1,226.03

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Compact size solar inverter charger with 4000 watt rated power and split phase output. This type of off grid inverter price is affordable. The output efficiency (battery mode) of the off grid split phase inverter is at least 85%. This pure sine wave inverter charger adopts wall mounted design, easy to install, great for charging home appliances. There are overload protection, over current protection, high temperature protection of 4kW split phase off grid inverter charger.

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Delivery date: 15-20 days

SKU: ATO-OGI-LS402

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With WiFi Module

Yes [+$27.17]

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Overview
Specs
FAQ
Reviews

Overview

A 4kW split phase off grid inverter is a type of power inverter designed for use in off-grid solar or renewable energy systems, specifically in regions with a split-phase electrical grid system. Off grid inverters are crucial for converting the DC (direct current) electricity produced by solar panels or other renewable sources into AC (alternating current) electricity, which is what most household appliances use.

Features:

Peak power more than 3 times, full automatic and perfect protection function.
AC charge current 0-30A adjustable, three working modes selectable.
Added fault code query function, easy to monitor the operation in real time.
Supports diesel or gasoline generator, tough electricity situation can also be used.
Pure Sine Wave Output. This type of output is ideal for sensitive electronics and appliances because it reduces the risk of damage and ensures smooth operation.

Details:

LCD Display

It provides a user-friendly interface for monitoring vital system parameters of off grid inverter charger in real time. This visual feedback helps users troubleshoot issues quickly and adjust settings for optimal performance, ensuring better system efficiency and reducing the need for technical support. It enhances convenience, improves system management, and promotes more efficient energy use in off-grid environments.

Wall-mounted Design

It saves floor space, making it ideal for areas with limited room. The elevated position also improves airflow, enhancing cooling efficiency and prolonging the lifespan of off grid split phase inverter. By keeping the inverter off the ground, it is less prone to dust, dirt, and water exposure, increasing reliability in various environmental conditions.

Toroidal Transformer

Its compact design provides a higher efficiency-to-size ratio, reducing core losses and improving energy conversion. It also offers better voltage regulation and reduces the physical footprint of the inverter. Additionally, the transformer's low stray inductance improves system response and reduces heat generation, enhancing the lifespan and reliability of the split phase 4000 watt inverter charger.

Applications:

Residential Off Grid System

Solar Power System

Office Area

RV & Mobile Home

Specs

Model		ATO-OGI-LS402
Rated power		4000W
Peak power (20ms)		12000VA
Batter voltage		24/48VDC
Input	DC input voltage range	10.5-15VDC / single battery
	AC input voltage	85VAC-138VAC / 170VAC-275VAC
	AC input frequency	45Hz-65Hz
	Max AC charging current	15A-30A (depending on the model)
	AC charging voltage	LEAD battery: Charge Voltage: 14V; Float Voltage: 13.8V (Single battery voltage)
	AC charging method	Three-stage (constant current, constant voltage, floating charge)
Output	Efficiency (battery mode)	≥85%
	Output voltage (battery mode)	L1-N/L2-N: 110AC±2% / L1-L2: 220VAC±2%
	Output frequency (battery mode)	50/60Hz ±1%
	Output wave (battery mode)	pure sine wave
	Efficiency (AC Mode)	＞99%
	AC output voltage (AC mode)	L1-N/L2-N: 110AC±10% / L1-L2: 220VAC±10%
	Output frequency (AC Mode)	tracking automatically
	Output waveform distortion (battery mode)	linear load ≤3%
	NO load loss (battery mode)	≤2.5% rated power (Models below 7KW); ≤1% rated power (Models above 7KW)
	NO load loss (AC mode)	≤2.5% rated power (charge does not work in AC mode)
	NO load loss (energy saving mode)	≤ 10W
Battery	Customizable	charge and discharge parameters of different types of batteries can becustomized according to user rerquirements
Inside solar controller (optional)	Charging mode	PWM or MPPT
	Charging current	10A-60A (PWM) / 10A-100A (MPPT)
	PV input voltage range	PWM: 30V-44V (24V system); 60V-88V (48V system) MPPT: 30V-120V (24V system); 60-120V (48V system)
	Max PV input voltage (At 25℃)	PWM: 50V (12/24V system); 100V (48V system) / MPPT: 150V
	PV array maximum power	24V System: 280W, 560W, 840W, 1120W, 1400W, 1680W 48V System: 560W, 1120W, 1680W, 2240W, 2800W, 3360W
Environment	Working temperature	-10℃~ +40℃ (Less load when temperature over)
	Storage temperature	-15℃~ +60℃
	Height	2000m (Less load when height over)
	Noise	≤55dB
	Humidity	0%-95% (No condensation)
Transfer time		≤4ms
Display		LCD
Thermal method		cooling fan in intelligent control
Working mode		battery first / AC first / saving energy mode
Protection		overload /over current/ high temperature/ battery low voltage/ battery high voltage
Communication		RS232 port (optional)
Size		510320140 mm (LWH)
Net weight		21.5kg

Split Phase Wiring Diagram:

Split phase off grid inverter wiring diagram

FAQ

How does split phase off grid inverter work?

A off grid split phase inverter is designed for use in off-grid solar or other renewable energy systems, typically in residential settings, particularly in North America. It provides AC power to a household in a manner similar to how the local utility supplies power. However, in an off-grid system, it operates independently of the utility grid.

This type of solar power inverter works by converting DC (direct current) electricity from batteries or solar panels into AC (alternating current), which is suitable for household appliances. The "split-phase" terminology comes from the way AC power is supplied in North America. A typical split phase system involves two 120V AC circuits, each 180 degrees out of phase with the other, creating two hot lines (L1 and L2) and a neutral, resulting in a 240V potential between L1 and L2.

In an off grid system, the inverter typically provides 120V or 240V power depending on the configuration. For a 240V output, the inverter generates two 120V legs that are 180 degrees out of phase with each other. This configuration allows appliances to receive the appropriate voltage based on their needs. The system uses a transformer inside the inverter to step up or step down the voltage as needed, enabling both high and low-power devices to run efficiently.

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Existing reviews

Solid 4kW split-phase inverter

The 4kW split-phase inverter charger has been great for my cabin setup. It was easy to mount, and I’ve had no issues running my fridge, lights, and a few tools off it. The protections built in are also adorable, even in battery mode.

From: Jonas Burns | Date: 8/4/2025 3:12 AM

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