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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
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Description
Knox Argon VM II 4000 3KW Off Grid Solar Inverter With PV 4000WKnox Argon VM II 4000 3KW Off Grid Solar Inverter with PV 4000W The Knox Argon VM II 4000 is an efficient off grid solar inverter designed for small to medium off grid solar systems. Featuring a robust IP21 rated design, it ensures reliable indoor use with easy installation and live monitoring capabilities. Key Features IP21 rated Design for Indoor Use: Ideal for protected indoor environments, ensuring durability and safety with resistance to dust and
Knox Argon VM II 4000 3KW Off-Grid Solar Inverter with PV 4000W
The Knox Argon VM II 4000 is an efficient off-grid solar inverter designed for small to medium off-grid solar systems. Featuring a robust IP21-rated design, it ensures reliable indoor use with easy installation and live monitoring capabilities.
Key Features
- IP21-rated Design for Indoor Use: Ideal for protected indoor environments, ensuring durability and safety with resistance to dust and water splashes.
- 4000W PV Input: Perfect for bifacial solar panels, enabling higher energy generation and better performance in various lighting conditions.
- Wide MPPT Voltage Range (60 – 450V): Provides flexibility in solar panel selection and ensures efficient energy conversion across a variety of system setups.
- Quick & Easy Installation: Designed for fast and simple installation using standard tools, saving both time and effort.
- Easy Commissioning & Monitoring: Equipped with an LED screen for live monitoring, providing real-time access to system performance and settings.
The Knox Argon VM II 4000 is a reliable choice for off-grid solar power applications, offering ease of use, high efficiency, and durable performance.
Technical Data Sheet:
| Rated Power | 3000VA/3000W |
| INPUT | |
| Voltage | 230 VAC |
| Selectable Voltage Range | 170-280 VAC (For Personal Computers) ; 90-280 VAC (For Home Appliances) |
| Frequency Range | 50 Hz/60 Hz (Auto sensing) |
| OUTPUT | |
| AC Voltage Regulation (Batt. Mode) | 230VAC ± 5% |
| Surge Power | 6000VA |
| Efficiency (Peak) | 93% |
| Transfer Time | 10 ms (For Personal Computers) ; 20 ms (For Home Appliances) |
| Waveform | Pure sine wave |
| BATTERY | BATTERY |
| Battery Voltage | 24 VDC |
| Floating Charge Voltage | 27 VDC |
| Overcharge Protection | 32 VDC |
| SOLAR CHARGER & AC CHARGER | |
| Solar Charger Type | MPPT |
| Maximum PV Array Open Circuit Voltage | 450VDC |
| Maximum PV Array Power | 4000W |
| MPP Range @ Operating Voltage | 60 ~ 400 VDC |
| Maximum Solar Charge Current | 100 A |
| Maximum AC Charge Current | 80A |
| Maximum Charge Current | 100A |
| PHYSICAL | |
| Dimension, D x W x H (mm) | 120 x 300 x 440 |
| Net Weight (kgs) | 10 |
| Communication Interface | RS232/RS485, optional WiFi |
| ENVIRONMENT | ENVIRONMENT |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 4
Our pup loves the cronch cronch!
Style: Ball, Size: Medium (Pack of 1)
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in play time. And they are keeping him busy at home - that’s a good thing.
He loves investigating the crunchy-cronchy-crinkly sound which is a nice change from squeakers. It can withstand his destructive chewing well-being, gentle on his little teeth. I love that. Chuck-It is thinking outside the box with a variety of balls to keep dogs engaged! I do worry about the crinkle plastic inside because it is accessible because of the air holes and it feels a little sharp. So this will have to be an at home toy so we can monitor his play.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Great products all around
Style: Ball, Size: Medium (Pack of 2)
Any of these balls are great! My dogs love all of them. The squeaky ones are their favorite!
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Reviewed in the United States on March 12, 2026
★★★★★ 5
My dog loves it!
Style: Ball, Size: Medium (Pack of 1)
This crunch ball was a Christmas gift for my 65lbs fur baby. It’s now mid April and he still loves it. He loves running after it and chomping down on it. It is still in good shape despite all the chomping it’s gotta . I highly recommend. He goes back to this toy agin and again! Great buy.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Our first babies favorite and longest lasting ball yet and he is fixing to be 7.
Style: Ball, Size: Medium (Pack of 2), Style: Ball, Size: Medium (Pack of 2)
Toughest ball we have found yet. Our doberman loves Chuckit! Balls especially the crunch one. He spreads all the balls and toys we have bought but these lasted the longest. The crunch and the glow in the dark are usually his pick but he has several different choices.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Fast shipping
Style: Ultra, Size: Small (2 Pack)
My Doxie’s Absolute Favorite Fetch Toy – Who Knew Baby Balls Could Be So Paw-some?
I bought these colorful baby balls as a simple toy for my little one, but my furry bay claimed them as his own from day one! These small, bouncy balls are perfect for little dogs – they’re lightweight and easy to grip in his mouth, keeping him entertained for hours. No squeakers or stuffing to destroy, just pure, durable fun. If your pup loves a good game of fetch or just batting things around, these “baby” balls are a steal. Highly recommend!
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Reviewed in the United States on February 27, 2026