Reliable Home Solar Inverter - Off-Grid 1.5kW-6.2kW

1kW 3kW 5kW 6kW Off Grid Inverter High Frequency

Dual-Power Battery Activation
Can activate lithium batteries using either solar or utility power for reliable startup in all conditions.
Advanced Battery Compatibility
Seamlessly works with LiFePO4 batteries via RS485 communication for smart, efficient energy management.
Premium Power Quality
Delivers pure sine wave output with 1.0 power factor for stable, clean electricity to protect sensitive devices.
High-Efficiency Solar Charging
Wide PV input range (60V-500V) with built-in MPPT (60A/120A) maximizes solar harvest, even without batteries.
Smart & Durable Design
Features WiFi monitoring, detachable dust cover for tough environments, and EQ function to extend battery life.

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NK-EM1500-24L

NK-EM2500-24L

NK-EM3500-24L

NK-EM5500-24L

NK-EM6200-48L

Capacity: 1.5KVA/1.5KW
Solar Charger Type: MPPT
Nominal Input Voltage: 230VAC
Frequency: 50/60 Hz
Nominal Output Voltage: 220/230VAC
Waveform: Pure sine wave
Battery Voltage:24VDC
Dimensions: 358*295*100mm
Net Weight: 6kgs

Capacity: 2.5KVA/2.5KW
Solar Charger Type: MPPT
Nominal Input Voltage: 230VAC
Frequency: 50/60 Hz
Nominal Output Voltage: 220/230VAC
Waveform: Pure sine wave
Battery Voltage:24VDC
Dimensions: 358*295*100mm
Net Weight: 6.5kgs

Capacity: 3.5KVA/3.5KW
Solar Charger Type: MPPT
Nominal Input Voltage: 230VAC
Frequency: 50/60 Hz
Nominal Output Voltage: 220/230VAC
Waveform: Pure sine wave
Battery Voltage:24VDC
Dimensions: 358*295*100mm
Net Weight: 7kgs

Capacity: 5.5KVA/5.5KW
Solar Charger Type: MPPT
Nominal Input Voltage: 230VAC
Frequency: 50/60 Hz
Nominal Output Voltage: 220/230VAC
Waveform: Pure sine wave
Battery Voltage: 48VDC
Dimensions: 438*295*105mm
Net Weight: 9kgs

Capacity: 6.2KVA/6.2KW
Solar Charger Type: MPPT
Nominal Input Voltage: 230VAC
Frequency: 50/60 Hz
Nominal Output Voltage: 220/230VAC
Waveform: Pure sine wave
Battery Voltage: 48VDC
Dimensions: 438*295*105mm
Net Weight: 9kgs

Why Choose

The all-in-one reverse control system is a multifunctional photovoltaic off-grid inverter that integrates three key modules: AC inversion, solar charging control, and battery charge/discharge management. Features 12-volt to 220-volt inverter.
Application

This off-grid inverter is ideal for remote homes, solar farms, and agricultural sites needing reliable power. 98% MPPT efficiency maximizes solar input. Built-in surge protection and BMS compatibility ensure safe operation for lithium/lead-acid batteries, making it perfect for off-grid cabins, irrigation systems, and emergency backup.
In Stock & Ready to Ship

Namkoo’s 6kW Off-Grid High Frequency Inverters are in stock now and ready for fast global shipping. We maintain a large inventory of various models to support flexible OEM and ODM requirements, making us an ideal partner for distributors and wholesalers. Additionally, we offer a parallel-ready off-grid inverter series for expanded power capacity—enabling scalable solutions for diverse customer needs. Contact us today to discuss cooperation opportunities.
COMPANY INTRODUCE

Guangdong Namkoo Power Co.,Ltd. have more than 15 years factory experience for solar power products, power inverter pure sine wave products, solar battery storage,solar appliance products.More than 3000 successfully case have installed in 100+ countries.Germany technology, China price, Global service. Sincerely welcome everyone JOIN US and develop solar business.
FAQs

Q

Are you factory?

Namkoo is the solar & ESS manufacturer specialized in energy storage system, solar battery and solar inverter over 10 years. Apart from it, we can also provide ODM and OEM services of solar energy system for our customers. You could kindly leave your contact on our company website, so we could send you our factory video.

Q

Where is your factory? Can I visit your factory?

Located in Guangdong Province, China. Yes sure, we can arrange and make an appointment in advance for you.

Q

Can send me a sample for free?

Yes, you could kindly purchase and pay it first, we will reduce this cost on your next order.

Q

Do you accept OEM?

Yes.

Q

What is the difference between MPPT controller and PWM controller?

The MPPT controller has Max.PV open circuit voltage reach 150VDC, charging efficiency 30% higher than PWM, automatically match various voltage of 12V/24V/48V.

The PWM controller is weight light, intelligent and economic, automatically match various voltage of 12V/24V.

Q

What is the difference between high frequency inverter and low frequency inverter?

High frequency means from about 300Hz down to 50Hz, low frequency is from 0Hz up to 50Hz.

Low frequency inverter comes with large power transformer, stronger and good for loading those home appliances which build-in motor, such as refrigerators, air conditioners, water pumps, etc. High frequency inverter has a small volume, light weight, economic and high efficiency.