Sol-Ark 15kW Ultimate EG4 + SunGold Power Solar Kit
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Visit CalculatorThe Sol-Ark 15kW Ultimate EG4 + SunGold Power Solar Kit is a premium whole-home backup and off-grid energy solution designed for maximum efficiency, durability, and expandability. With a powerful Sol-Ark hybrid inverter, scalable EG4 lithium battery systems, and high-output SunGold Power solar panels, this kit ensures reliable energy storage and delivery for homes, businesses, and remote installations. Engineered to provide uninterrupted power during outages and support long-term renewable energy independence, it’s the ideal choice for anyone seeking a high-capacity, future-proof energy solution.
All-in-One Hybrid Inverter – The Sol-Ark 15kW inverter combines solar, battery, and grid inputs in one streamlined system for simplified installation and efficient energy management.
Advanced Energy Storage – Includes six EG4 LL-S 48V 100Ah server rack batteries plus EG4 WallMount and PowerPro options for flexible, scalable storage solutions.
Seamless Communication – The EG4 LiFePOWER4 Communications Hub ensures smooth system monitoring and control between inverter and batteries.
High-Efficiency Solar Power – Equipped with 18 SunGold Power 415W mono black PERC panels, providing 7.47kW of clean, renewable solar energy.
All-Weather Battery Option – The EG4 PowerPro WallMount battery is designed for outdoor durability, ensuring reliable performance in varied climates.
Expandable & Future-Proof – Modular battery configurations and scalable solar input allow the system to grow with your energy needs.
1 × Sol-Ark 15kW All-In-One Hybrid Inverter
1 × EG4 LiFePOWER4 Communications Hub
6 × EG4 LL-S 48V 100Ah Server Rack Batteries
1 x EG4 WallMount Indoor Battery 280AH | 51.2V | Indoor | Heated UL1973, UL9540A
1 x EG4 PowerPro WallMount AllWeather Lithium Battery | 48V 280Ah
18 × Sungold Power 415W Mono Black PERC Solar Panels
| Specification | Details |
| Dimensions (H x W x D) | 807 x 494 x 306 mm (31.8 x 19.4 x 12 in) |
| Weight | 61.2 Kg / 135 lb. |
| Enclosure | IP65 / NEMA 3R |
| Ambient Temperature | -25~55°C, > 45°C Derating |
| Noise | < 30 dB @ 25°C (77°F) |
| Idle consumption | - No Load 90W |
| Communication and Monitoring | Wi-Fi & LAN Hardware Included |
| Standard Warranty | 10 Years |
| Specifications | Details |
| Cell Balance | 120mA | Passive Balance | Cell Voltage Difference >40mV |
| Temperature Accuracy | 3% | Cycle Measurement | Measuring Range: 40°F ‒ 212°F (-4°C ‒ 100°C) |
| Voltage Accuracy | 0.5% | Cycle Measurement | For Cells/Module |
| Current Accuracy | 3% | Cycle Measurement | Measurement Range: +/-200A |
| SOC | 5% | Integral Calculation |
| Power Consumption | Sleep & Off Mode | <300uA | Storage/Transport/ Standby |
| Power Consumption | Operating Mode | <25mA | Charging/Discharging |
| Communication Ports | RS485/CAN | Customizable |
| Maximum Modules in Series | 1 |
| Maximum Modules in Parallel | 64 |
| Dimensions (H×W×D) | 6.1in×19in×17.4in (15.5cm×48.2cm×44.2cm) |
| Weight | 99.6 lbs. (45.2 kg) |
| Module | ETL Listed to UL Standard 9540A:2019 |
| Cell | UL:1973 |
| Specifications | Details |
| Communication Ports | RS485/CAN Can be customized |
| Cycle Life | >8000 Cycles, 80% Depth of Discharge (DOD) |
| Design Life | Over 15 Years |
| Weight | 282.2 lbs. (128 kg) |
| Safety Certifications | UL1973, UL 9540A (Testing) |
| Specification | Details |
| Battery Type | LiFePO4 (Lithium Iron Phosphate, Grade A) |
| Voltage | 48V (Nominal: 51.2V, Float: 54V) |
| Continuous Charge/Discharge Current | 200A (Max) |
| Capacity | 14.3kWh |
| BMS | 200A |
| Weight | 308.6 lbs. / 140Kg |
| Category | Specification |
| Peak Power (Pmax) | 415W |
| Production Tolerance | ±3% |
| Maximum Power Current (Imp) | 13.13 A |
| Maximum Power Voltage (Vmp) | 31.6V |
| Short Circuit Current (Isc) | 14.02A |
| Open Circuit Voltage (Voc) | 37.50V |
| Maximum System Voltage | 1500V |
| Wind Resistance | 2400Pa |
| Output Cables | 12 AWG (1 ft per cable) |
| Number of Cells | 108(6*18) |
| Cell Type | Mono 182*91mm |
| Certifications | UL 61730 CE TUV |
| Product Weight | 45.8lbs |
| Product Dimension | 67.8*44.6*1.4inch |
| Package Weight | 100.5lbs(2PCS) |
Can I expand the system later?
Yes, both the inverter and battery setup are expandable, allowing you to add more batteries or solar panels as your power needs grow.
Is this system grid-tied or off-grid?
It can operate as a grid-tied, hybrid, or fully off-grid system, making it versatile for different applications.
Does it work during power outages?
Yes, the Sol-Ark 15kW inverter provides seamless backup power with automatic switchover.
Can it handle outdoor installation?
Yes, the EG4 PowerPro battery is built for all-weather outdoor use, while the WallMount Indoor battery is designed for climate-controlled environments.
What is the lifespan of the batteries?
EG4 LiFePO₄ batteries are rated for over 6,000 cycles, offering 10+ years of reliable use under normal conditions.
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I was a DIY solar power wannabe... that is 'til I connected with Manny... The man's a prince! He not only knows his stuff; he walked me through all things electrical. To make sure I had all I needed... he gave me his cell phone # to text him anytime I got confused... nights and weekends included. The prices were very competitive... definitely go with Manny -- you won't go wrong!
Bruce D.
I am always hesitant to buy things at places I have never shopped... I want to give a shout out to Manny who with great patience and knowledge helped me get my orders... I felt valued as a customer and I will definitely be back in the future. I highly recommend them, they make you feel like family.
Jennene A.
I'm about to go off grid. I called Manny, he walked me through everything so I could truly understand what I needed and never tried to upsell me. He was honest and made a customer for life.
Ray B.
I would personally like to thank Manny... I purchased the inverter and decided I needed to return it... Manny was very understanding and went out of his way to help me return the product and not even have to pay for shipping return. He gives this company reputation, honor and quality customer service!
Roger V.
I have been talking with Manny the owner... He has not only helped me design a system but he's been assisting with the install and components. I am super pleased so far with the assistance.
Jeff S.
We added 2 more batteries to our current set up. Pleased with the customer service from Off-Grid Source! Will be back!
Jason
Very fast response times. Very professional. I highly recommend!
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