Clean power conversion
Helps turn stored battery energy into usable AC power for everyday loads, backup circuits, and off-grid applications.
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SunGoldPower
12KW All in One Off Grid Solar Inverter FR12K-B 12KW All in One Off Grid Solar Inverter FR12K-B
SKU: FR12K-B
$1,790.00
$2,238.00
Save $448.00
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SunGoldPower Solar Inverter
12KW All in One Off Grid Solar Inverter FR12K-B
The FR12K-B delivers 12,000W rated AC output from a 48V battery system, with selectable 120V or 120/240V output and two built-in MPPT solar inputs. Plan it for an indoor, professionally designed off-grid or battery-backed system; the IP20 enclosure is not weatherproof.
12KWOff-Grid48V batterySKU FR12K-B
Solar input and battery decisions
Its two MPPTs accept up to 6.6kW each (13.2kW combined PV input), with 500V maximum PV open-circuit voltage and a 125–425V MPPT range. Check each string’s cold-weather Voc and 22A input-current limit. Battery voltage is 48V nominal with a 40–60V operating range; verify BMS current and charging settings before buying batteries.
For different system sizes, compare the SunGoldPower 10kW split-phase inverter or SunGoldPower 11.4kW hybrid inverter. These are different models and installation modes, not interchangeable wiring plans.
Built for battery systems
A practical match for solar storage builds where the inverter needs to work smoothly with a dedicated battery bank.
Ready for real loads
Designed for customers powering appliances, tools, electronics, and essential circuits instead of small one-off devices.
Built to anchor your power system
A strong inverter is the part of the system that customers notice when the power actually has to work. This model is built for dependable conversion in solar and storage projects where the system needs to support more than basic charging.
- Use it as the core conversion point for a battery-backed power system.
- A practical fit for backup power, off-grid power, workshops, mobile builds, and residential energy projects.
- Helps keep system design cleaner when you need dependable AC output from stored energy.
Package Includes
1x 12KW All in One Off Grid Solar Inverter FR12K-B
Includes the selected item based on the current package option.
| 12KW All in One Off Grid Solar Inverter FR12K-B | |
| Selected variant SKU | FR12K-B |
|---|---|
| MODEL | |
| Model | FR12K-B |
| Product Type | Inverter |
| ELECTRICAL | |
| Rated Output Power | 12,000 W |
| Maximum Peak Power | 24,000 W |
| Rated Output Voltage | 120/240 V AC, single-phase or split-phase |
| Motor Load Capacity | 6 hp |
| Rated Frequency | 50/60 Hz |
| Output Waveform | Pure sine wave |
| Transfer Time | 10 ms typical |
| Parallel Capacity | Up to 6 units |
| Battery Types | Lithium-ion, lead-acid, or user-defined |
| Rated Battery Voltage | 48 V DC |
| Battery Voltage Range | 40-60 V DC |
| Maximum PV Charging Current | 200 A |
| Maximum Grid / Generator Charging Current | 120 A |
| Maximum Hybrid Charging Current | 200 A |
| Number of MPPTs | 2 |
| Maximum PV Input Power | 6,600 W + 6,600 W |
| Maximum PV Input Current | 22 A + 22 A |
| Maximum PV Open-Circuit Voltage | 500 V DC |
| MPPT Operating Voltage Range | 125-425 V DC |
| Grid / Generator Input Voltage Range | 90-140 V AC |
| Grid / Generator Input Frequency | 50/60 Hz |
| Bypass Overload Current per Phase | 63 A |
| MPPT Tracking Efficiency | 99.9% |
| Maximum Battery-Inverter Efficiency | 92% |
| AC Output Configuration | 120V single-phase and 120/240V split-phase |
| MPPT Quantity | 2 |
| Maximum PV Input Voltage | 500V per MPPT |
| Maximum Total Solar Input | 13.2kW |
| Battery Compatibility | Lithium-ion, lead-acid, and user-defined battery profiles |
| Operating Modes | Four AC output modes and two charging modes |
| CONNECTIONS | |
| Communication | RS485, CAN, USB, and dry contact; optional Wi-Fi / GPRS |
| Parallel Support | Up to 6 units / 72kW total |
| PHYSICAL | |
| Dimensions | 28.7 × 19.1 × 6.7 in |
| Weight | 61.73 lb |
| OPERATING LIMITS | |
| Protection Rating | IP20; indoor use only |
| Operating Temperature Range | -10°C to 55°C; derates above 45°C |
| EMC Certifications | EN 61000-6-1, EN 61000-6-3, and FCC Part 15 Class B |
| Built-In Protection | AC and DC circuit breakers plus PV rapid shutdown |
Frequently Asked Questions
Clear answers to common questions about this product, setup, compatibility, and use.
How much output does the FR12K-B provide?
It is rated for 12,000W continuous AC output and 24,000W peak. Choose 120V single-phase or 120/240V split-phase output according to the documented configuration and the loads being served.
What battery voltage and current should I plan?
The FR12K-B uses a 48V nominal battery bank and accepts 40–60V DC. At high AC load, battery current can be substantial; size the battery bank, BMS, busbars, short DC conductors, disconnect, and fusing for the actual load and inverter efficiency.
How much solar input does the FR12K-B accept?
It has two MPPT inputs rated for up to 6,600W each, or 13,200W combined. Each input is limited to 22A, with a 500V maximum PV open-circuit voltage and 125–425V MPPT operating range. Calculate cold-corrected string Voc for the installation location.
Can this IP20 inverter be mounted outdoors?
No. The published IP20 rating calls for a protected indoor installation with required ventilation and service clearances. Confirm ambient temperature and derating in the manual.
Can it export power to a utility grid?
Do not assume grid export from its AC input or transfer functions. The manufacturer presents FR12K-B as an off-grid inverter. Confirm the permitted modes, listing, utility rules, and panel interconnection with a qualified installer.