Eco Solar Kits · Sungold Power · SGR-18K20E
Sungold Power 18,000W Off‑Grid Solar Kit 48VDC 120V/240V LiFePO₄ 30.72 kWh Battery & 20×415W Solar Panels 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.
Overview
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.
What is Included with the SGR-18K20E Solar Kit
- •1 X 18000 Watt 48V DC 120V/240V AC Output
- •20 X 415 Watt Monocrystalline Solar Panels
- •2 X 100A Mppt Solar Charge Controller
- •6 X 100AH 51.2V Lifepo4 Battery
- •1 X Enclosed Battery Cabinet
- •2 Sets X 50 Feet, Solar Extension Cables-Inverter PV input
- •2 Sets Cable Between Battery and MPPT Controller
- •20 Sets of Mounting Z-Brackets
- •1 X 400A DC Breaker
- •2 X 50A PV Breaker
Technical Highlights
18,000W, 54,000W Surge
Rated continuous output with a 20-second surge rating triple the continuous power for motor starts and other high-draw moments.
Split-Phase 120V/240V
Runs standard household circuits and larger 240V appliances from the same system.
Dual 100A MPPT Controllers
Two external solar charge controllers included, giving room to expand well beyond the 8,300W (20×415W) of panels included here.
Bluetooth-Enabled Controllers
Monitor charge controller status and performance via Bluetooth, without needing to be on-site.
Easily Expandable
Add more batteries and solar panels in the future as your energy needs grow.
>95% Line-Mode Efficiency
Minimal energy loss whether running on battery, solar, or passthrough grid power.
IP68 Waterproof Panels
Junction box rated for full submersion protection, backed by a 25-year linear product warranty.
21.25% Panel Efficiency
182mm Grade-A monocrystalline cells for a higher conversion rate per panel.
Full Specifications
LF-PV 18KW Off-Grid Inverter/Charger (×1)
Output
| 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 |
Efficiency
| Nominal (peak) efficiency | >88% |
| Line-mode efficiency | >95% |
Battery & Charging
| Nominal DC input voltage | 48 Vdc |
| Charger breaker rating | 100 A |
| Max. charge power rate | 1/3 rated power |
Mounting & Warranty
| Mounting | Wall mount |
| Standard warranty | 1 year |
100A MPPT Solar Charge Controller (×2)
Input & Output
| Rated charge current | 100 A |
| Max. PV input voltage | 250 V |
| Battery voltage | 12V–48V, auto-detect |
Physical & Connectivity
| Efficiency | >99% |
| Weight | 12.5 lbs |
| Monitoring | Bluetooth |
CoreX 5 Pro Battery Pack (×6, In Enclosed Cabinet)
Capacity
| Configuration | 1P16S |
| Rated capacity | 100 Ah |
| Rated voltage | 51.2 V |
| Rated energy per unit | 5.12 kWh |
| Combined (6 units) | 30.72 kWh |
Charge & Discharge
| Voltage range | 43.2–56.8 V |
| Standard charge/discharge current | 50 A |
| Max. charge current | 95 A |
| Max. discharge current | 100 A |
Physical
| Weight (each) | 94.8 lbs (43 kg) |
| Dimensions | 20.08 × 17.4 × 5.14 in |
| Protection rating | IP20 |
Environmental & Scaling
| 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)
Electrical
| 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% |
Build & Warranty
| 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 |
What It Can Power
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.
Additional Documentation
Common Questions
Does this inverter have built-in solar charge controllers?
No — this kit pairs the inverter with two separate 100A MPPT solar charge controllers, rather than a controller built into the inverter itself.
What’s the actual usable battery capacity?
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.
Are the batteries stored in a rack or individually?
This kit includes an enclosed battery cabinet sized for all six 100AH batteries, rather than mounting them individually.
Can I add more solar panels later?
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.
Do I need a licensed electrician to install this?
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.
Reviews
There are no reviews yet.