SunGold Power 12KW All-In-One Off-Grid Solar Inverter

The SunGold Power 12KW All-In-One Off-Grid Solar Inverter Runs 120/240V Off-Grid Homes With 12000W Continuous and a 24000W Peak

The SunGold Power 12KW All-In-One Off-Grid Solar Inverter (model FR12K-B, also called the Freedom 12K-B) is a 48V solar charge inverter for stand-alone power systems. One indoor, wall-mounted unit combines a 12000W pure sine wave inverter, two MPPT solar inputs of 6600W each, a grid or generator charger and a dedicated generator port.

SunGold designs it for off-grid systems and industrial scenarios. It suits off-grid homes, ranches and shops that need 120/240V split phase power and heavy motor starting, and up to six units can be paralleled for larger systems.

SunGold Power 12KW All-In-One Off-Grid Solar Inverter Features

12000W Continuous and a 24000W Peak

Rated output is 12000W in split phase or single phase, with a 24000W peak and a 6HP motor load rating. Phase voltage can be set to 100, 105, 110, 115, 120 or 127VAC. The 10ms typical switching time keeps loads running when the source changes.

Two 6600W MPPT Inputs

Each MPPT input accepts up to 6600W, 500Vdc open circuit and 22A, with a 125-425Vdc operating range. Tracking efficiency is rated at up to 99.9%, and the two inputs track separately for arrays on different orientations.

200A Solar Charging and 120A Generator Charging

The battery can charge at up to 200A from solar and up to 120A from the grid or a generator, with hybrid charging capped at 200A. The 48V port works from 40 to 60Vdc with lithium-ion, lead-acid or user-defined settings, and grid or PV power can wake a dormant lithium battery.

Generator Port and Smart Load Output

A dedicated generator port sits alongside the mains input, so a generator can stay wired in as a charging source. SunGold also lists a smart load output, and the unit has a CT port.

Breaker Module and Simple Controls

SunGold lists a built-in breaker module, and the unit has its own PV switch and an ON/OFF rocker switch. An LCD shows a live power flow chart with system data and operating status.

Parallel Up to Six Units

Up to six inverters can run together in single phase, split phase or three-phase systems. A parallel communication cable is packed with each unit, and paralleled inverters share one battery bank.

Timed Charging and Wi-Fi Monitoring

Two charge modes (PV only and mains plus PV) and two output modes (mains bypass and inverter output) keep setup straightforward. Timed charging and discharging follows time-of-use pricing, an energy-saving mode cuts no-load losses, and a Wi-Fi logger in the box supports remote monitoring.

Real-World Applications

Off-grid homes. Run a full 120/240V panel from solar and a 48V battery bank.

Ranches and remote properties. Keep a generator wired to its own port for cloudy stretches.

Shops and farm buildings. The 6HP motor rating and 24000W peak help with pumps, compressors and tools.

Backup with grid charging. Where the grid is available, use it to charge the battery and power loads through bypass.

Larger off-grid builds. Parallel up to six units as loads grow.

How It Compares to Common Alternatives

Versus SunGold's 12KW hybrid inverter. SunGold's 12KW hybrid is a grid-interactive model with 200A grid pass-through and an outdoor-rated enclosure. This model is an indoor off-grid unit with a 24000W peak, and it weighs 61.73 lbs.

Versus a grid-tie inverter. A grid-tie inverter stops producing power when the grid is down. This inverter builds its own 120/240V supply from the battery and solar.

Versus separate components. One unit replaces an inverter, two charge controllers and an AC charger, with one display and one settings menu.

Is This Off-Grid Solar Inverter the Right Fit

• Battery bank. Requires a 48V bank within 40-60Vdc. SunGold's manual calls for 85mm² (000 AWG) battery cable and a 3P-300A breaker.
• Solar array. Two independent strings, each up to 6600W, 500Vdc open circuit and 22A.
• AC wiring. Mains input range is 90-140Vac. The manual lists 6 AWG conductors and 3P-63A breakers for split phase input and output.
• Location. IP20 rated for indoor use only, from 14 to 131°F with derating above 113°F.
• Size and weight. 28.48 x 17.64 x 5.91 inches and 61.73 lbs.

This may be a good fit if

• You are building an off-grid 120/240V system
• You need 12000W of continuous output
• You use a generator as a backup source
• You want UL1741 certification

Common Questions

Is This a Grid-Tie Inverter?

No. It is built for off-grid systems. The grid or a generator can charge the battery and power loads through bypass, but this model is not described as exporting power to the utility.

Which Charging Modes Are Available?

PV only, and mains plus PV. Timed charging and discharging lets you set charge and discharge times around time-of-use electricity prices.

Can Paralleled Units Share One Solar Array?

No. In parallel, each inverter's PV array must be independent, and the two inputs on each inverter must also be independent. All paralleled units connect to the same battery.

What Happens If It Is Overloaded?

Between 102% and 110% load, output turns off after 5 minutes. Between 110% and 125%, it turns off after 10 seconds, and above 125% after 5 seconds. Output restores after 3 minutes, and after 5 overloads it stays off until restarted.

What's Included

• 1 x SunGold Power 12KW All-In-One Off-Grid Solar Inverter (FR12K-B)
• 1 x Parallel Communication Cable
• 1 x BMS Communication Cable
• 1 x WIFI Logger
• 4 x SC50-8 Copper Lugs
• 2 x SC95-8 Copper Lugs
• 4 x M6*60mm Expansion Screws
• 2 x Phillips Screws M5*10mm
• 5 x Phillips Screws M8*12mm
• 4 x Black Screws M4X8mm
• 1 x M8 Socket Screwdriver
• 1 x Flat-Head Screwdriver
• 1 x User Manual
• 1 x Warranty Card
• 1 x Certificate of Conformity
• 1 x Shipment Inspection Report

Off-Grid Power Built for Heavy Loads

The SunGold Power 12KW All-In-One Off-Grid Solar Inverter gives a 48V off-grid system 12000W of 120/240V output, a 24000W peak, two MPPT inputs and a dedicated generator port in one unit. At Outbound Power, we help customers size off-grid inverters, battery banks, arrays and generators. If you have questions, our team is happy to help.

SunGold Power FR12K-B Manual

SunGold Power FR12K-B Data Sheet