Description
Fortress Power EV6500-S (Solo) 6.5kW Split-Phase Hybrid Inverter
Reliable Backup & Off-Grid Power — Scalable, Flexible, and Smart
While the Solo 6.5K is only approved for indoor installations, when placed inside theFortress Power FlexTower, it can be installed outdoors.
The Fortress Power EV6500-S is a 6.5kW split-phase / single-phase solar storage inverter designed for off-grid, backup, and hybrid energy systems. With a built-in 140A solar charge controller, dual MPPTs, and support for grid or generator input, the EV6500-S delivers dependable power management for homes, cabins, microgrids, and energy-independent projects.
This inverter is ideal for homeowners and installers who want battery-based solar with advanced load control, peak shaving, and future scalability — without the complexity of stacking multiple devices.
High-Capacity Solar Charging
Integrated 140A solar charge controller supports large PV arrays for fast, efficient battery charging — perfect for high-usage or off-grid systems.
Split-Phase 120/240V Output
Provides true 120/240 Vac split-phase power, making it compatible with standard residential loads, appliances, and sub-panels.
Grid & Generator Ready
Supports grid and generator input with intelligent switching for seamless backup power during outages or low solar production.
Time-of-Use & Smart Energy Control
Advanced scheduling allows users to optimize charge and discharge cycles, reduce peak utility costs, and manage energy strategically.
Scalable Power Platform
Parallel up to six units for a combined 39kW of output, suitable for large homes, small commercial sites, or microgrid installations.
Flexible Battery Compatibility
Works with 48V lithium-ion, lead-acid, or user-defined battery banks, offering design freedom across many storage solutions.
Typical Applications
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Backup Power Systems
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Off-Grid Homes & Cabins
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Peak Shaving & Load Shifting
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Hybrid Solar + Storage
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Microgrids & Smart Load Control
Product Specifications
Inverter Output
| Specification | Details |
|---|---|
| Rated Output Power | 6,500 W |
| Maximum Peak Power | 13,000 VA |
| Output Voltage | 120 / 240 Vac (Single / Split-Phase) |
| Frequency | 50 / 60 Hz (Adjustable) |
| Output Waveform | Pure Sine Wave |
| Switching Time | 10 ms (typical) |
| Parallel Capability | Up to 6 units (39 kW total) |
Battery Parameters
| Specification | Details |
|---|---|
| Nominal Battery Voltage | 48 Vdc |
| Battery Voltage Range | 40 – 60 Vdc |
| Maximum Battery Charge Current | 140 A DC |
| Maximum Grid / Generator Charge Current | 80 A DC |
| Supported Battery Types | Lithium-ion, Lead-acid, User-Defined |
Solar (PV) Input
| Specification | Details |
|---|---|
| MPPT Channels | 2 (1 + 1) |
| Max PV Input Power | 5,000 W + 5,000 W |
| MPPT Voltage Range | 150 – 450 Vdc |
| Max PV Open Circuit Voltage | 550 Vdc per MPPT |
| Max Short Circuit Current | 18 A / 18 A |
Grid / Generator Input
| Specification | Details |
|---|---|
| Input Voltage Range | 65 – 140 Vac |
| Input Frequency | 50 / 60 Hz |
| Bypass Overload Current | 40 A |
Efficiency
| Specification | Details |
|---|---|
| MPPT Tracking Efficiency | 99.9% |
| Max Battery Inverter Efficiency | 93% |
Physical & Environmental
| Specification | Details |
|---|---|
| Dimensions (W × D × H) | 25.5 × 16.1 × 5.5 in |
| Weight | 47.8 lbs |
| Operating Temperature | 14°F to 131°F (-10°C to 55°C) |
| Cooling Method | Fan-Cooled |
| Noise Level | < 60 dB |
| Enclosure Rating | IP20 (Indoor Use Only) |
Communications
| Specification | Details |
|---|---|
| Built-In Interfaces | RS485, CAN, USB, Dry Contact |
| Optional Modules | Wi-Fi / GPRS |
Standards & Certifications
| Specification | Details |
|---|---|
| Safety | UL 1741, IEC 62109-1, IEC 62109-2 |
| EMC | FCC Part 15 Class B, EN61000-6-1 / 6-3 |
| Compliance | RoHS |
Need Help Designing Your System?
Our team can help size batteries, panels, and parallel configurations to match your loads and goals. Check out the PowerPlan for system design support or bundle pricing.
