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FULL TECHNICAL REVIEW EASUN SMH-III 4.2KW 6.2KW

Product Introduction

The Easun SMH-III 4.2KW and 6.2KW hybrid solar inverters represent a robust solution for individuals and businesses seeking energy independence and resilience against power outages. Designed to seamlessly integrate both off-grid and on-grid solar systems, these inverters address the critical need for reliable power supply in diverse environments. Their unique capability to function as a pure sine wave inverter, an MPPT solar charger, and a battery charger in one compact unit makes them a versatile cornerstone for modern energy setups. This device is ideally suited for residential applications, small commercial installations, or any project demanding a stable and efficient power conversion system, ensuring continuous operation and optimal energy harvesting from solar panels. Check out our other technical reviews for more hardware testing.

Hardware specifications

Core Specifications: Easun SMH-III 4.2KW 6.2KW

  • High-concerned chemical: None
  • is_customized: Yes
  • Output Frequency: (Auto detection) 50Hz/ 60Hz
  • Output Power: 1 — 200 KW (Specific models offer 4.2KW and 6.2KW)
  • Type: DC/AC Inverters
  • Weight: 10.3 kg
  • Output Type: SINGLE
  • Brand Name: EASUN POWER
  • Origin: Mainland China
  • Certification: CE
  • Feature1: solar panel
  • Feature2: easun
  • Feature3: inversor
  • Feature4: growatt inverter (Likely a keyword for search comparison)
  • Feature5: inverter with inbuilt lithium battery (Feature not explicitly confirmed for this specific model, but common in hybrid inverters)
Available Versions

Available Versions & Selection Guide

The Easun SMH-III series is available in two primary power configurations: SMH-III-6.2K-WIFI and SMH-III-4.2K-WIFI. These versions cater to different power demands, offering flexibility for various solar energy system sizes and requirements.

Package Contents

What’s in the Box?

Information not available at the moment.

Features and benefits

Why I love EASUN Hybrid Solar Inverter 6.5KW

  • Hybrid Functionality for Uninterrupted Power: The Easun SMH-III series operates as a true hybrid inverter, seamlessly managing power flow between solar panels, batteries, and the utility grid. This means users can enjoy the benefits of both off-grid independence and on-grid reliability, ensuring continuous power supply even during grid outages or when maximizing self-consumption from solar energy.
  • Advanced MPPT Solar Charge Controller: Equipped with a Maximum Power Point Tracking (MPPT) solar charge controller, these inverters optimize the energy harvest from solar panels. The MPPT technology ensures that the inverter extracts the maximum possible power from the solar array, regardless of weather conditions or panel temperature, leading to higher overall system efficiency and faster battery charging.
  • Pure Sine Wave Output for Sensitive Electronics: The Easun SMH-III inverters produce a pure sine wave output, which is identical to the power supplied by the utility grid. This clean and stable power is crucial for operating sensitive electronic devices, appliances, and motors without the risk of damage or malfunction, unlike modified sine wave inverters.
  • High Power Output and Versatile Voltage Options: With models offering 4.2KW and 6.2KW of continuous output power, these inverters can handle significant electrical loads, making them suitable for a wide range of residential and light commercial applications. Furthermore, the support for both 24VDC and 48VDC battery systems provides flexibility in battery bank design, allowing users to choose the most efficient and cost-effective solution for their specific needs.
  • Robust Charging Capabilities and Automatic Frequency Detection: Featuring a powerful 120A hybrid charge controller, the inverters can rapidly charge connected battery banks, ensuring quick recovery and readiness for demand. The automatic detection of output frequency (50Hz/60Hz) simplifies installation and ensures compatibility with various regional grid standards, making the device adaptable for international use without manual configuration.
Pros and Cons

Strengths & Weaknesses:

What I Like

  • High power output options (4.2KW and 6.2KW) suitable for various loads.
  • Hybrid functionality supports both off-grid independence and on-grid reliability.
  • Integrated MPPT solar charge controller maximizes solar energy harvesting efficiency.
  • Pure sine wave output ensures compatibility and safety for sensitive electronics.
  • Versatile DC input options (24VDC/48VDC) for flexible battery system design.
  • High 120A charge controller for rapid battery charging.
  • Automatic 50Hz/60Hz output frequency detection for global compatibility.
  • CE certified, indicating compliance with European safety standards.

Points to Consider

  • Can be noisy, especially the 6.2KW model, during high charging amps or heavy load discharge (over 1kW).
  • Shipping times can be exceptionally long, with some customers experiencing delays of 1.5 to 2 months or more.
  • Potential for minor manufacturing or packaging issues, such as detached mounting brackets during transit.
  • Lack of explicit information regarding package contents and detailed technical documentation (e.g., pinout) in the provided data.
  • Some reviews indicate issues with seller communication or shipping reliability in specific cases.
Price and Availability

Where to Buy & Customer Reviews

Check Price on AliExpress (Best Value)

Find on eBay (New & Used)

As an Amazon Associate, eBay Partner, and AliExpress affiliate, I may receive compensation if you make a purchase through the links on this page at no extra cost to you. This supports my technical reviews and independent hardware testing.

Store info

STORE

⭐ 95.2% Positive Feedback | 3558 Followers  

Name:FNIRSI Official Store
Store no.:2939001
Location:China
Open since:Feb 26, 2017

Detailed seller ratings

Item as Described4.7 Below Average
Communication4.7 Below Average
Shipping Speed4.6 Below Average

OTHER GOODS

User reviews

User Reviews & Feedback Analysis ⭐ 4.9 (51) | Sold (265)

Reviews Easun SMH-III 4.2KW 6.2KW

Authentic Feedback Analysis:
⭐ 5.0/5 | V***n: This inverter has been a game-changer for managing power outages, making them almost unnoticeable. While it can be quite noisy during high-amp charging or heavy load discharge (over 1kW), this hasn’t been a significant issue for me. The seller’s support was exceptional, even providing a shipping refund when my expedited delivery was delayed due to holidays.
⭐ 5.0/5 | a***r: Despite a very long shipping period from October 22nd to December 29th, the inverter arrived and is fully functional. It’s proving invaluable daily, especially after integrating it into a system with two batteries from the same vendor. Highly appreciate the quality product; it’s been in use for nearly a month now.
⭐ 5.0/5 | a***r: The unit is quite noisy when the fans activate, though the 4.2 kW model is noticeably quieter. Compared to PowMr inverters, which have continuously running fans, this one seems less noisy overall.
⭐ 5.0/5 | AliExpress Shopper: Delivery was reasonably fast at six weeks, and the inverter is operational. Unfortunately, the wall mounting bracket detached during transit, likely due to the box being dropped, shearing off the four M3 countersunk screws. I recommend the manufacturer pay more attention to such small details. I managed to extract the broken screws without opening the casing or breaking seals, which was important as it wasn’t for my personal use. Overall, the product is fine, and I didn’t need to contact the seller.
⭐ 5.0/5 | AliExpress Shopper: The item arrived on time, even a bit early, with excellent packaging. It’s now ready for installation, and I highly recommend the seller.
⭐ 5.0/5 | S***j: Everything was as expected, though delivery took two months. We’ve ordered from this seller multiple times, and their service is consistently great!
⭐ 5.0/5 | AliExpress Shopper: The product matches the website description perfectly. Shipping was very fast, about a week, as it was delivered from Poland. I’ve put it into operation, and it performs flawlessly.
⭐ 5.0/5 | AliExpress Shopper: Everything is super! Many thanks to the seller!
⭐ 5.0/5 | С***ч: The seller was excellent, dispatching immediately after payment with perfect packaging and complete accessories. However, the delivery took a lengthy two months.
⭐ 5.0/5 | AliExpress Shopper: Delivery took 35 days. I recommend the seller; they responded promptly to my two inquiries.
⭐ 5.0/5 | AliExpress Shopper: Shipping to Kyiv took 46 days, which was quite long, but the item arrived intact and appears well-made. My thanks to the seller.
⭐ 5.0/5 | AliExpress Shopper: The order traveled from November 14th to January 3rd, with a frustrating month-long delay in Estonia. Despite the shipping ordeal, the product itself is superb.
⭐ 5.0/5 | AliExpress Shopper: It took a very long time to arrive, but it did, and no customs fees were charged.
⭐ 5.0/5 | AliExpress Shopper: The inverter was received without damage. However, the delivery took an extremely long 80 days, which was disappointing.
⭐ 5.0/5 | AliExpress Shopper: It took an exceptionally long time to ship.
⭐ 5.0/5 | C***o: Everything was very well packed and presented. Although I haven’t tested its functionality yet, the equipment shows good finishing. The shipping was very fast, almost express.
⭐ 5.0/5 | AliExpress Shopper: Shipping took 1.5 months. I can’t test it yet as the battery is still in transit.
⭐ 5.0/5 | R***i: The solar inverter was delivered to Moldova via Fidex. The packaging was excellent, and the product matches the description. I did have to pay extra for customs clearance. I recommend the seller.
⭐ 5.0/5 | S***h: A very nice, beautiful, and excellent product.
⭐ 5.0/5 | J***z: Absolutely perfect.
⭐ 5.0/5 | AliExpress Shopper: The seller provided a good response.
⭐ 5.0/5 | AliExpress Shopper: An excellent inverter.
⭐ 1.0/5 | AliExpress Shopper: Do not buy from this seller; they failed to ship the item, requiring an appeal to AliExpress for a refund. It’s advisable to find another distributor, as this one is not recommended.



Pinout and Interface Map

PRODUCT PARAMETER Easun SMH-III 4.2KW 6.2KW

Comparison table

Technical Specifications & Comparison Easun SMH-III 4.2KW 6.2KW

MODELIsolarSMHIII4.2KWIsolarSMHIII6.2KW
Phase1-phase
MaximumPVInputPower6200W6500W
RatedOutputPower4200W/4200VA6200W/6200VA
MaximumSolarChargingCurrent120A
GRID-TIEOPERATION
PVINPUT(DC)
NominalDCVoltage/Maximum DCVoltage360/500VDC
Start-upVoltage IInitial Feeding Voltage60VDC/90VDC
MPPTVoltageRange60~450VDC
MaximumInputCurrent1/18A1/22A
GRIDOUTPUT(AC)
NominalOutputVoltage220/230/240VAC
OutputVoltageRange195~253VAC
NominalOutputCurrent18.2A27A
PowerFactor>0.99
EFFICIENCY
MaximumConversionEficiency(DC/AC)98%
TWOLOADOUTPUTPOWER
FullLoad4200W6200W
MaxiumMain Load4200W6200W
MaxiumSecondLoad(batterymode)1400W2067W
MaxiumLoadCutOffVoltage26VDC52VDC
MaxiumLoadReturnVoltage27VDC54VDC
OFF-GRIDOPERATION
ACINPUT
ACStart-upVoltage1AutoRestartVoltage120-140VAC/180VAC
AcceptableInputVoltageRange90-280VACor170-280VAC
FrequencyRange59~61+1HZ
Maximum ACInputCurrent24.7A36.4A
PVINPUT(DC)
NominalDCVoltage/Maximum DCVoltage360/500VDC
MPPTVoltageRange60~450VDC
MaximumInputCurrent1/18A1/22A
BATTERYMODEOUTPUT(AC)
NominalOutputVoltage220/230/240VAC
OutputWaveformPuresinewave
Eficiency(DCtoAC)94%
BATTERY&CHARGER
NominalDCVoltage24VDC48VDC
MaximumSolarChargingCurrent120A
MaximumACChargingCurrent100A
MaximumSolar+ACChargingCurrent120A
HYBRIDOPERATION
PVINPUT(DC)
NominalDCVoltage/Maximum DCVoltage360/500VDC
Start-upVoltage IInitial Feeding Voltage90VDC/120VDC
MPPTVoltageRange60~450VDC
MaximumInputCurrent1/18A1/22A
GRIDOUTPUT(AC)
NominalOutputVoltage220/230/240VAC
OutputVoltageRange195~253VAC
NominalOutputCurrent18.2A27A
ACINPUT
ACStart-upVoltage1AutoRestartVoltage120-140VAC/180VAC
AcceptableInputVoltageRange90-280VACor170-280VAC
Maximum ACInputCurrent24.7A36.4A
MaximumACChargingCurrent100A
GENERAL
PHYSICAL
Dimension,D*W*H(mm)420*350*110
CartoonDimension,D*W*H(mm)500*415*180
NetWeight(kgs)88.9
GrossWeight(kgs)1011
INTERACE
CommunicationPortRS232/RS485/WIFI/GPRS/LITHIUMBATTERY
ENVIRONMENT
Humidity5%to95%RelativeHumidity(Non~condensing)
OperatingTemperature-10°C~50C
STANDARD
ComplianceSafetyCE
Final summary

Final Verdict: Easun SMH-III 4.2KW 6.2KW

The Easun SMH-III 4.2KW and 6.2KW hybrid solar inverters offer a compelling package for anyone looking to establish or upgrade a robust solar energy system. Despite some reported issues with shipping times and occasional noise under heavy load, the core functionality—combining a powerful pure sine wave inverter, an efficient MPPT charge controller, and flexible hybrid operation—makes it an excellent value proposition. It is an ideal choice for homeowners and small businesses aiming for energy independence, reliable backup power, and optimized solar energy utilization. The primary advantage of its comprehensive hybrid capabilities and high power output significantly outweighs the minor drawbacks, making it a highly recommended investment for sustainable energy solutions. For more in-depth analyses, visit andibond.com.

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