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The Fortress Power Solo 6.5K delivers 6.5kW of reliable power for off-grid homes, cabins, and backup systems. Its built-in 140A solar charge controller and support for both grid and generator input ensure smooth, uninterrupted operation. Time-of-use scheduling helps you store and use energy efficiently to lower utility costs.
Easily scale up to 39kW by connecting multiple units, and optional CTs provide enhanced safety and precise energy management. Ideal for off-grid living, microgrids, or adding resilience to your home.
Solo 6.5K Inverter User Manual
| GENERAL DATA | |
| Weight | 47.84 lbs (21.7 kg) |
| Operating Temperature | 14 ºF - 131 ºF (-10 ºC - 55 ºC), >45 ºC derating |
| Protection Level | IP20 (for indoor use only) |
| Noise | <60db |
| Dimensions (H x W x D) | 27 x 16.1 x 5.5 in (686 x 410 x 140 mm) |
| Cooling Mode | Fan |
| INVERTER OUTPUT | |
| Rated Output Power | 6,500W |
| Maximum Peak Power | 13,000 VA |
| Rated Output Voltage | 120/240 VAC (Single/Split-Phase)* |
| Rated Frrequency | 50/60Hz* |
| Output Wave | Pure Sine Wave |
| Switching Time | 10 ms (typical value) |
| Parallel Number | 6 |
| BATTERY PARAMETERS | |
| Compatible Battery Type | Lithium-ion battery / lead-acid battery / user- defined battery* |
| Rated Battery Voltage | 48 Vdc |
| Voltage Range | 40 Vdc-60 Vdc* |
| Maximum Grid/Generator Charge Power | TBD |
| Maximum Battery Charge Power (with PV) | 140 A DC* |
| PV INPUT | |
| MPPT Channel Number | 2 |
| Maximum Input Power | 5,000W+5,000W |
| Maximum Input Short Circuit Current | 18 / 18 A |
| Maximum Open Circuit Voltage | 550 Vdc / 550Vdc |
| MPPT Operating Voltage Range | 150 Vdc-450 Vdc |
| GRID / GENERATOR INPUT | |
| Input Phase Voltage Range | 65 VAC - 140 VAC |
| Grid Frequency Range | 50/60 Hz |
| Bypass Overload Current | 40A |
| COMMUNICATION | |
| Built-in Interface | RS485 / CAN / USB / dry contact* |
| External Module (Optional) | Wi-Fi / GPRS* |
| EFFICIENCY | |
| MPPT Tracking Efficiency | 99.9% |
| Maximum Efficiency of Battery Inverter | 93% |
| STANDARDS & CERTIFICATIONS | |
| Safety Standards | IEC62109-1, IEC62109-2, and UL1741 |
| EMC | EN61000-6-1, EN61000-6-3, and FCC 15 class B |
| RoHS | Yes |
Ships within 48 hours · Estimated delivery Jun 30 - Jul 5
US$40
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