Fortress Power Hybrid Power Kit | 10kW 120/240 Output 48VDC - 16.2kWh System Bundle | Envy10 Hybrid Inverter + 3 x eFlex Max Lithium Battery | Guardian Battery Monitor | FlexTower
Description
The Fortress Power Hybrid Power Kit includes (1) 10kW Envy10 Hybrid Inverter, (3) eFlex Max Lithium Iron Phosphate (LiFePO4) Batteries, (1) Guardian Battery Monitor, and (1) Flex Tower. With a 48VDC system and 120/240 output, this 16.2kWh bundle is designed for reliable, uninterrupted power for smaller to medium-sized homes or businesses. The included Flex Tower provides a compact and efficient storage solution, making it easier to manage your energy needs. This system ensures protection from power outages while delivering dependable, long-lasting performance.
Envy10: The Fortress Power Envy 10kW is a whole-home, all-in-one inverter solution. Paired with the Fortress Power eFlex 5.4 kWh, the eVault MAX 18.5 kWh or LFP-10 MAX batteries, the Envy features a 60A AC passthrough providing up to 10kw (41.6A @240V) of whole-home backup power. The Envy features a built-in generator input with AC/DC coupling, on- and off-grid capabilities, plus a 2 MPPT output allowing for a maximum of 15kW PV array (Envy 10kW). The Envy is equipped with a built-in APsmart Module Level Rapid Shutdown Transmitter and Button, along with integrated AC & DC breakers allowing for fast installation and commissioning. Use our online monitoring app to access your system from anywhere.
eFlex Max: Discover the power and flexibility of the eFlex MAX 5.4 LFP Battery, designed to provide you uninterrupted power in the most demanding environments and weather conditions. This top-tier lithium battery combines advanced technology with practical design to meet a wide range of energy needs while ensuring utmost safety and reliability.
8000 cycles guaranteed, 10-year warranty and the highest quality standard, make it perfect for both your home, apartment and condos, off grid cabins, RVs, boats and more.
Guardian Battery Monitor: The Fortress Power Guardian is a gateway device that connects Fortress Power Batteries to the cloud. Paired with the companion app, the Guardian will automatically discover connected Fortress Power batteries. This enables battery-level monitoring of key values such as State of Charge, Voltage, Current and Battery Temperature as well as faster, more accurate technical support. Remotely update battery firmware, submit support tickets, chat live with technical support, complete warranty submissions, and securely share installation and monitoring data directly with support engineers-right from the companion app.
FlexTower: The FlexTower is for your integrated energy storage system. Built on the foundation of the DuraRack battery cabinet, the FlexTower combines the battery, charge controller, and inverter into a single unit with an LCD control panel, and remote monitoring capability. The FlexTower is easy to install and carries IP65/NEMA3R ratings for indoor or outdoor use.
Product Specifications
Fortress Power Envy 10kW All-In-One Inverter | 120/240VAC | 48VDC Product Specifications
| Envy 10kW |
| Input DC (PV Side) |
|
| Max. DC Input Power for Single MPPT |
6000W / 6000 W |
| Max. PV Input Power |
15000W |
| Max. PV Power Delivered to Battery & AC Outputs |
12000W |
| DC Input Voltage Range |
100V-600V |
| Nominal DC Input Voltage |
360V |
| Full Power MPPT Voltage Range |
210V-500V |
| Max. DC Input Current |
25A / 25A |
| MPPT Number/(Strings per MPPT) |
2 / 2 |
| Output/Input AC (Grid) |
|
| Continuous AC Power to Grid |
10000W (240V) |
| Continuous AC Power to Load with Grid or Generator |
14,400W (240V) AC Passthrough/ 12000W (240) GEN |
| Nominal Output Voltage |
120/240V Single Split Phase, 120/208V Single Split Phase, 120/208V Three Phase |
| Max. Continuous AC Current |
41.6A @ 240V |
| Nominal AC Frequency |
50Hz/60Hz |
| Output AC (Off-Grid) |
|
| Max. Output Power |
10000W |
| Nominal Output Voltage |
120V/240V |
| Nominal Output Frequency |
50Hz/60Hz |
| Nominal Output Current |
41.6A @ 240V |
| Peak Power |
120kW / 500ms |
| Switching Time |
<20ms |
| Dedicated Auto-start Generator Port |
50A / 12kW |
| Battery Parameters |
|
| Compatible Battery Type |
eVault Max, eFlex, LFP-10 MAX |
| Nominal Battery Voltage |
48V |
| Battery Voltage Range |
48V-60V |
| Maximum Charging/Discharging Current |
210A |
| Maximum Charging/Discharging Power |
10000W |
| Efficiency |
|
| MPPT Efficiency |
99.9% |
| Max. Efficiency |
97.5% |
| CEC Efficiency |
96.5% |
| Protection |
|
| Anti-islanding Protection |
YES |
| DC Switch |
YES |
| Ingress Protect Degree |
NEMA 4X, IP65 |
| SPD Protection |
YES |
| AFCI |
YES |
| RSD |
Built-in APsmart Transmitter |
| General Data |
|
| Dimensions |
750 x 520 x 285mm (29.5 x 20.5 x 11.23 in) |
| Weight |
50kg (110lbs) |
| Display |
Color LCD |
| Ambient Temperature Range |
-25 to 60 °C (-13 to 140 °F) |
| Cooling |
FAN |
| Communication |
RS485/Wi-Fi/CAN |
| Standard & Certification |
|
| Certifications |
UL1741, UL1741SB, IEEE1547A, rule 21, ISO-NE, FCC15 class B, HECO, CEC, Luma, SGIP, NOM |
| Warranty |
10 Years |
Fortress Power eFlex Max 5.4, 51.2V Lithium Battery (105Ah | 5.4kWh)
| General |
| Name |
eFlex MAX 5.4 |
| Total Energy(kWh) |
5.4 |
| Max. Charge Current (Continuous) [A] |
100 |
| Max. Discharge Current (Continuous) [A] |
100 |
| Nominal Capacity [Ah] |
105 |
| Voltage Range [V] |
48-55 |
| Charging Temperature [F] |
32 ~ 114 |
| Discharging Temperature [F] |
-4 ~ 131 |
| Storage Temperature [F] |
20 ~ 95 |
| Dimension [L x W x H, inch] |
17.5 x 24.2 x 7.2 |
| Weight [lbs] |
108 |
| Life Cycles |
8000 @ 80% DoD |
| Round Trip Efficiency |
>98% |
Fortress Power Guardian Battery Monitor Product Specifications
| Feature |
Specification |
| Power Consumption |
5W – 24V @ 1A power supply |
| AC/DC Adapter |
120V / 5A, 24V DC, 5.5mm connector |
| Supported Communication Types |
1x MODBUS/TCP, 2x MODBUS/RTU, 2x CAN 2.0 |
| Operation Frequency |
2.4 GHz |
| Weight (Device Only) |
0.8 lbs (0.4 kg) |
| Dimensions (Device Only) |
7.25" x 6" x 1.25" (WxHxD) |
| Shipping Package Dimensions |
14" x 8.5" x 2" (WxHxD) |
| Shipping Package Weight |
2 lbs |
| Housing |
IP23 |
| Mounting System |
DIN Rail Mount |
| Status Display LEDs |
Power, Cloud connection, Bluetooth/Wi-Fi connection, Serial communication with battery, Error signal (from top to bottom) |
Fortress Power FlexTower IP65 Outdoor Rated Inverter Enclosure (Hold Sol-Ark 12K or 15K Inverter) Product Specifications
| Specification |
Details |
| Enclosure Material |
Carbon Steel |
| Enclosure Protection |
IP65 water and dust proven (outdoor) |
| Enclosure Color |
White |
| Dimensions (W x H x D) |
29.29 x 41.34 x 18.03 in (744 x 1050 x 458 mm) |
| Enclosure Weight |
59.6 kg / 153.2 lbs |
| Maximum Battery Units |
4 eFlex 5.4 |
| Storage Capacity Range |
5.4 kWh – 21.6 kWh per unit |
| Max. Storage Capacity |
81 kWh (4 units in parallel) |
| Knockout Size |
1 inch & 2 inch |
| Positive and Negative Battery Busbars |
2 x 4 points; M8 (5/16) Terminal Rings |
| Positive and Negative Busbars to Inverter |
2 points; M10 (3/8) Terminal Rings |
| Battery Cables |
4 sets of |
| Terminal Torque |
7.0 – 7.7 Nm (5.1 – 5.7 ft-lb) |
| Enclosure Warranty |
3 Years |
| Certifications |
UL9540, UL9540A, UL1973, CEC, SGIP |
Product Manual
Envy 10 Product Manual
Envy 8k/10kW Inverter – Data Sheet
Envy 8k/10k Inverter – Manual
Fortress Power System Design Tool
NOM Certification
OGPe Certification
ENVY 8K10K UL1741 SB 3RD ED.
eFlex Max Product Manual
eFlex MAX Datasheet
eFlex MAX Owner / Installation Manual
eFlex MAX Warranty Letter
Guardian Product Manual
Fortress Power Guardian Product Manual
FlexTower Product Manual
FlexTower Data Sheet
FlexTower Installation Manual
Flextower/Durarack UL9540
Product Warranty
Fortress Power Warranty – Envy 8k (CDBG)
Fortress Power Warranty – Envy 8k / 10k
eFlex Warranty
Product FAQs
Fortress Power Product FAQs
1) Does energy storage work well with my solar system?
Yes. On the grid? Absolutely! Energy storage adds a lot of value to your solar systems. It keeps your solar system operating when your utility service is interrupted. Without energy storage, your PV system will be forced to shutdown when the grid is off.
If you live off grid, energy storage enables you to use the clean solar energy to power your home day and night.
Fortress Power also knows you’re a fan of conservation—energy storage saves both your surplus solar energy and your cash since it reduces on grid energy dependence.
2) Can I use energy storage without solar panels?
Absolutely. For on grid clients, a home energy storage unit stores energy from your electricity provider. If an outage occurs, home energy storage can provide up to 24 hours of potentially life-saving power. Need more reassurance? Fortress Power offers batteries with larger storage capabilities, completely customizable to your needs. And, like you, we appreciate saving money. When electricity is at its lowest daily rate, our smart energy storage units use that period to charge. When peak electric use occurs, our energy storage units can discharge power to suit your lifestyle.
3) What about power outage protection?
Power interruptions shouldn’t disrupt your schedule. An energy storage system will keep your solar system operating during grid outages. When paired with solar panels, an energy storage system supplies unlimited energy delivery. The solar panels power your home during the day and use any excess power to charge the battery. At night, the system keeps your space bright. When used without solar panels, power outage support is dependent on battery size and your energy use. Batteries providing at least 12 hours of backup power are safest.
4) Are home energy storage systems financially beneficial?
You can use the energy storage to shelve your peak usage. When electricity is at its lowest daily rate, our smart energy storage uses that period to charge. During the peak periods, our energy storage system can power your home, reducing your electricity bill. Clients with solar panel installations enjoy a faster return on investment.
5) Do I receive incentives on my energy storage system?
If your energy storage is powered by solar panels, you are eligible for 30% federal tax credit. Many states and utilities provide rebates for homes and businesses with energy storage systems, aiming for grid resilience.
We provide a 10 year product warranty and guarantee up-to 8000 cycles, whichever comes first. Speak to our representatives for details.
We use Lithium Iron Phosphate (LiFePo4; Lithium Ferro Phosphate) technology – the safest lithium technology in the industry. It’s environmentally friendly and can be fully recycled. While Many other competitors, such as LG Chem, Tesla and Panasonic use cobalt-based Lithium-Ion battery, which has a very poor thermal stability. Any short circuit or cell-breakage can cause thermal runaway and catch fire.
And comparatively, Lithium Iron Phosphate battery deliver substantially higher amount of life cycles. We guarantee up-to 6000 cycles, while LG Chem, Tesla and Panasonic provide less than 3000 cycles.
8) Are Fortress Lithium batteries widely compatible?
Yes, our batteries are designed to work with all 48V chargers and hybrid inverters. We work well with Schneider, Outback, Magnum, Sol-Ark, Victron, Morningstar and so on. Please Check out our Inverter Compatibility list.
9) Are permits required for installation?
Legal requirements vary by location. Fortress Power’s technical support team will help you on obtaining permits.
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