Product Description
The UL SPI-UP 4K~6.5K Series is a UL1741-certified split-phase hybrid inverter optimized for off-grid and backup solar systems in the U.S. market. With rated outputs from 4kW to 6.5kW and built-in 120/240V output, it supports high-quality sine wave delivery for homes, cabins, farms, and off-grid installations.
Designed for 48VDC battery systems (lithium or lead-acid), the SPI-UP series offers dual MPPT tracking up to 550Vdc input, integrated 100–140A hybrid PV + AC charging, and generator auto-start compatibility. Its compact form factor supports wall-mount or rack-based deployment.
Installers benefit from a plug-and-play setup, remote monitoring, programmable battery time slots, and parallel connection up to 6 units for greater power or multi-phase setups. It’s a rugged, efficient, and scalable inverter solution for American off-grid energy independence.
Key Specifications
| Parameter | SPI-4K-UP | SPI-5K-UP | SPI-6K-UP | SPI-6.5K-UP |
| Rated Power | 4000W | 5000W | 6000W | 6500W |
| Surge Power (5s) | 8000VA | 10,000VA | 12,000VA | 13,000VA |
| AC Output Voltage | 120/240V Split Phase | |||
| AC Frequency | 50/60Hz Auto-Detect | |||
| Waveform | Pure Sine Wave | |||
| Battery Voltage | 48VDC | |||
| Battery Voltage Range | 40–60VDC | |||
| Max Hybrid Charging Current | 100A | 120A | 140A | 140A |
| Max Grid/Generator Charging | 60A | 60A | 80A | 80A |
| PV Array Power (MPPT1+2) | 6kW (3+3) | 7.6kW (3.8+3.8) | 9kW (4.5+4.5) | 10kW (5+5) |
| MPPT Voltage Range | 150–450VDC | |||
| Max PV Input Current | 18A + 18A | |||
| Max Open-Circuit Voltage | 550VDC + 550VDC | |||
| Generator Input Voltage | 65–140VAC | |||
| Bypass Overload Current | 40A | |||
| Parallel Operation | Up to 6 units | |||
| Cooling | Intelligent Fan | |||
| Noise | <60 dB | |||
| Protection Rating | IP20 (Indoor) | |||
| Dimensions (mm) | 584.6 × 410 × 133 | |||
| Weight (kg) | 18.9 kg | |||
| Certifications | UL1741, IEC62109, FCC Class B, RoHS | |||
| Warranty | 18 Months | |||