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Eco Solar Kits · Sungold Power · SGR-18K20E
A complete off-grid solar system — 18,000W split-phase inverter, 30.72kWh of LiFePO₄ battery storage, and twenty 415W monocrystalline panels — sized for a large home or light commercial use.
Introducing our comprehensive off-grid solar kit, your ultimate solution for powering your home, cabin, or commercial solar system completely off-grid. This kit includes everything you need, featuring 20 high-performance 415W solar panels, a sizable 20.48kWh battery, an impressive 18,000W solar inverter, and two sets of solar cables and brackets.
With an estimated daily output of around 30kWh based on 4 hours of sunlight, this kit offers reliable energy production for your off-grid lifestyle. Boasting an 18kW split-phase (120/240V) output, it delivers abundant power to operate a wide range of appliances and devices, from air conditioners and well pumps to lights, refrigerators, TVs, workshops, offices, and even light commercial and industrial applications.
Furthermore, this kit provides exceptional value for its features and is easily expandable, allowing you to seamlessly integrate additional batteries and solar panels in the future as your energy needs grow. Experience affordability, reliability, and scalability with our complete off-grid solar kit.
Rated continuous output with a 20-second surge rating triple the continuous power for motor starts and other high-draw moments.
Runs standard household circuits and larger 240V appliances from the same system.
Two external solar charge controllers included, giving room to expand well beyond the 8,300W (20×415W) of panels included here.
Monitor charge controller status and performance via Bluetooth, without needing to be on-site.
Add more batteries and solar panels in the future as your energy needs grow.
Minimal energy loss whether running on battery, solar, or passthrough grid power.
Junction box rated for full submersion protection, backed by a 25-year linear product warranty.
182mm Grade-A monocrystalline cells for a higher conversion rate per panel.
LF-PV 18KW Off-Grid Inverter/Charger (×1)
| Continuous output power | 18,000 W |
| Surge rating (20 sec) | 54,000 W |
| Rated output voltage | 120/240Vac split-phase |
| Waveform | Pure sine wave |
| Output frequency | 50Hz ± 0.3Hz / 60Hz ± 0.3Hz |
| Nominal (peak) efficiency | >88% |
| Line-mode efficiency | >95% |
| Nominal DC input voltage | 48 Vdc |
| Charger breaker rating | 100 A |
| Max. charge power rate | 1/3 rated power |
| Mounting | Wall mount |
| Standard warranty | 1 year |
100A MPPT Solar Charge Controller (×2)
| Rated charge current | 100 A |
| Max. PV input voltage | 250 V |
| Battery voltage | 12V–48V, auto-detect |
| Efficiency | >99% |
| Weight | 12.5 lbs |
| Monitoring | Bluetooth |
CoreX 5 Pro Battery Pack (×6, In Enclosed Cabinet)
| Configuration | 1P16S |
| Rated capacity | 100 Ah |
| Rated voltage | 51.2 V |
| Rated energy per unit | 5.12 kWh |
| Combined (6 units) | 30.72 kWh |
| Voltage range | 43.2–56.8 V |
| Standard charge/discharge current | 50 A |
| Max. charge current | 95 A |
| Max. discharge current | 100 A |
| Weight (each) | 94.8 lbs (43 kg) |
| Dimensions | 20.08 × 17.4 × 5.14 in |
| Protection rating | IP20 |
| Charging temp | 39.2–131°F |
| Discharging temp | -4–131°F |
| Max parallel | 15 battery packs |
| Communication | RS485 / CAN / RS232 / Bluetooth / WiFi |
SG-415WM Monocrystalline Panel (×20)
| Max. power | 415 W |
| Max-power voltage | 31.61 V |
| Max-power current | 13.13 A |
| Open-circuit voltage | 38.82 V |
| Module efficiency | 21.25% |
| Cell type | Mono 182×91mm (108 cells) |
| Weight (each) | 45.1 lbs (20.45 kg) |
| Dimensions | 67.9 × 44.7 × 1.4 in |
| Junction box | IP68 |
| Warranty | 25yr linear product + 10yr workmanship |
With about 4 hours of direct sunlight, the panel array produces roughly 30kWh per day — enough for air conditioners, well pumps, lights, refrigerators, TVs, workshops, offices, and light commercial or industrial applications, per the manufacturer's own description.
No — this kit pairs the inverter with two separate 100A MPPT solar charge controllers, rather than a controller built into the inverter itself.
30.72kWh combined from six 5.12kWh CoreX 5 Pro battery packs in the included enclosed cabinet, each with real-time SOC/SOH monitoring via Bluetooth or WiFi.
This kit includes an enclosed battery cabinet sized for all six 100AH batteries, rather than mounting them individually.
Yes — this system is easily expandable, letting you add more batteries and solar panels as your energy needs grow, per the manufacturer's own product description.
Given the scale of this system — an 18,000W inverter, dual charge controllers, and a 30.72kWh battery bank — installation should be handled by a qualified, licensed electrician familiar with your local code.
Upon completing your order, you will promptly receive an email confirming the order placement, indicating that we have received your order and pre-authorized your credit card for the purchase. Our next step is to contact our suppliers to confirm the item's availability and readiness for shipment. Should the item be on backorder or unavailable, we will notify you of the estimated lead time. If the provided lead time is unsatisfactory, we will cancel the pre-authorization and contact you via email or phone. If the item can be shipped within 5 business days, we will proceed with processing the charges and shipping your order.
In the event of incorrect shipping information provided at checkout, we will make every effort to track down the item using our shipping partners. Please be aware that refunds and returns are not available in such cases. However, we will do our utmost to locate the item. If successful, re-shipping fees of up to 20% of the item's value may apply.
If your order is in stock and we have successfully processed your credit card charges, the items will be shipped within five business days from the order date. You will receive tracking information via email within 24 hours of your order leaving the distribution center. Should tracking information not be received within six days of your order, please contact us at +1 (307) 317-7213. The cut off time is 4 pm EST.
We offer free shipping on all orders and applicable items and brands within the mainland of the US (Hawaii, Alaska, and Overseas Territories are exclusions).
Eco Solar Kits does not ship orders directly to Hawaii, Alaska, or Overseas Territories. Clients needing delivery to these locations must arrange a freight forwarder and enter the forwarder’s address as the shipping address. Eco Solar Kits will then ship the order to the designated freight forwarder under our standard shipping terms.
Typically, orders are processed immediately upon receipt, taking approximately 1-4 business days after order confirmation, payment, and pick-up time to fulfill.
The delivery time via freight carrier may vary between 4-6 business days, depending on your location.
To prevent delays, frustration, and additional costs, kindly inform us of any concerns regarding the delivery to your location. It's important to note that the following situations may incur additional costs:
You can reach us using the contact methods provided below:
At D&D Eco Power Goods LLC, we strive to ensure our customers are completely satisfied with their purchases. Our return and refund policies are designed to provide a fair and transparent process based on the delivery date of your item.
You have 30 days from the delivery date to initiate a return. To be eligible for a return, the item must meet the following conditions:
Items that do not meet these conditions will not be accepted for return.
To begin the return process, please follow these steps:
We prioritize customer satisfaction and aim to provide a seamless refund experience. This refund policy is based on the delivery date of your item to ensure fairness in the return process.
Refunds will be processed based on the delivery date of the returned product. Once the manufacturer receives and inspects your returned item, we will notify you regarding the approval or rejection of your refund. If approved, the refund will be processed through your original payment method, typically within 10 days. Please note that it may take some time for your bank or credit card company to process and post the refund.
For any questions or concerns regarding our return or refund policy, please do not hesitate to contact us:
