Description
Fortress Power EV6500-S 6500W Offgrid Split Phase Inverter
Description
AVAILABLE IN Nov 1ST 2025
Reliable, Flexible Power for Off-Grid and Backup Applications
The Fortress Power EV6500-S is a next-generation off-grid solar storage inverter built for reliability, scalability, and intelligent energy control. Designed to handle both split-phase and single-phase loads, it delivers up to 6,500W continuous output and 13,000W peak output, making it ideal for off-grid living, home backup, microgrids, and peak shaving.
Equipped with time-based charging and discharging, generator/grid hybrid input, and intelligent switching, the EV6500-S gives homeowners and installers ultimate flexibility in managing energy consumption and production. Its high-capacity solar charge controller (up to 140A) ensures efficient solar harvesting, while support for up to six parallel units allows expansion up to 39kW of output power.
Product Specifications
Fortress Power EV6500-S 6500W Offgrid Split Phase Inverter Product Specifications
| 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 (W x D x H) | 25.5 x 16.1 x 5.5 in (648 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 Current | 80 A DC* |
| Maximum Battery Charge Current | 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 |






