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Off-Grid Solar Inverter — Premium Parallel Version
Low-frequency off-grid inverter in 6 kW and 12 kW, with dual MPPT charging, 48 V battery input and parallel operation of up to 12 units on a single communication cable.
- Output power: 6000 W / 12000 W
- Peak power: 12000 VA / 24000 VA
- PV charging: Dual MPPT, 8000 W / 2×8000 W
- Battery: 48 Vdc
- Parallel: Up to 12 units
- Efficiency: 95% peak (battery mode)
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Low-frequency off-grid inverter in 6 kW and 12 kW, with dual MPPT charging, 48 V battery input and parallel operation of up to 12 units on a single communication cable.
At a glance
| Model | INV-G1645 / INV-G1618 |
| Input format | L + N + PE |
| Rated input voltage | 220 / 230 / 240 V, configurable |
| Input voltage range | 90–280 V |
| Input frequency range | 50 / 60 Hz, adaptive |
| Output power rating | 6000 W / 12000 W |
| Output voltage | 220 / 230 / 240 VAC ±5% |
| Output frequency | 50 / 60 Hz ±0.2% |
| Waveform | Pure sine wave |
| Switching time | 10 ms computer equipment, 20 ms household appliances |
| Peak power | 12000 VA / 24000 VA |
| Overload capacity | Battery mode 10.5 s at 105–150%, 5 s above 150% |
Where the off-grid inverter fits
A low-frequency off-grid inverter in 6 kW and 12 kW, with dual MPPT charging, 48 V battery input, and parallel operation of up to 12 units on a single communication cable. Low-frequency topology carries a heavier transformer, which is what gives it the surge capability for pumps, compressors and air-conditioning start-up.
Mains and PV charging both reach 120 A on the 6 kW unit and 210 A on the 12 kW, with a settable float and constant-voltage charge, and input tolerance from 90 to 280 V — useful where the grid is weak or the generator is small. Above 12 units, or where a high-frequency unit is preferred, see the MPPT inverter range.
- 6 kW / 12 kW; 48 V battery; parallel up to 12 units.
- Dual MPPT; RS232 plus expansion slot for BMS, Wi-Fi or dry contact.
- Low-frequency units are heavy — check the wall or rack rating before mounting.
The full table, including every model in the range, is on the Technical Parameters tab.
Off-Grid Solar Inverter — Premium Parallel Version — technical parameters
| Model | INV-G1645 / INV-G1618 |
| Input format | L + N + PE |
| Rated input voltage | 220 / 230 / 240 V, configurable |
| Input voltage range | 90–280 V |
| Input frequency range | 50 / 60 Hz, adaptive |
| Output power rating | 6000 W / 12000 W |
| Output voltage | 220 / 230 / 240 VAC ±5% |
| Output frequency | 50 / 60 Hz ±0.2% |
| Waveform | Pure sine wave |
| Switching time | 10 ms computer equipment, 20 ms household appliances |
| Peak power | 12000 VA / 24000 VA |
| Overload capacity | Battery mode 10.5 s at 105–150%, 5 s above 150% |
| Peak efficiency | 95% (battery mode) |
| Battery rated voltage | 48 Vdc |
| Constant voltage charging | 56.4 Vdc, settable |
| Float charging voltage | 54 Vdc, settable |
| PV charging mode | Dual MPPT |
| PV maximum input power | 8000 W / 2 × 8000 W |
| MPPT input voltage range | 85–500 Vdc |
| Optimum Vmp range | 300–400 Vdc |
| Maximum PV input voltage | 500 Vdc |
| Maximum PV input current | 27 A / 27 A + 27 A |
| Maximum PV charging current | 120 A / 210 A |
| Maximum mains charging current | 120 A / 210 A |
| Interfaces | RS232, expansion slot for BMS card / Wi-Fi card / dry contact, RS485 |
| Parallel interface | With parallel function, up to 12 units |
| Operating temperature | −10–55 °C |
| Operating humidity | 5–95%, no condensation |
| Storage temperature | −15–60 °C |
| Altitude | 1000 m without derating, up to 4000 m to IEC62040 |
| Noise | ≤50 dB |
| Dimension (D×W×H) | 35×45×12 cm / 52.5×63×12.5 cm |
| Weight | 14.5 kg / 28.5 kg |
Tell us the daily load, the backup hours you need and the PV array size and we will confirm the model and the configuration for your project.