Fortress Power Hybrid Power Kit | 12kW 120/240 Output 48VDC - 18.5kWh System Bundle | Envy12 Hybrid Inverter + eVault Max Lithium Battery | Guardian Battery Monitor
This is Fortress Power's indoor bundle with (1) 12kW Envy True 12 Hybrid Inverter, (1) 18.5kWh eVault Max Lithium Iron Phosphate (LiFeP04) Battery and (1) Guardian Battery Monitor. This dependable and efficient system is designed to provide continuous power supply, eliminating the need for you to worry about blackouts or power outages.
Envy 12: The Fortress Power Envy True 12 kW – a whole-home, all-in-one 12kW 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 200A AC passthrough providing up to 12kW (50A @ 240V) or 10.4kW (50A @208V) of whole-home backup power or small commercial. The Envy features a built-in generator input with AC/DC coupling, on- and off-grid capabilities, plus a 3 MPPT output allowing for a maximum of 21 kW PV array. The Envy is equipped with a built-in APsmart Module Level Rapid Shutdown Transmitter and Button, along with Pre-built AC & DC breakers allowing for fast installation and commissioning. Use our online monitoring app to access your system from anywhere.
eVault Max: The newest innovative Lithium Iron Phosphate battery from Fortress Power is the eVault Max 18.5 kWh ®. An all-in-one solution for your residential and commercial needs. Scalable up to 370kWh with a serviceable top cover access to make installation of this battery simple and worry free. The eVault Max is AC/DC coupled to solar arrays and works for many applications that require solar storage, including Off-Grid, Back Up power, self-supply and Peak Charge Reduction just to name a few.
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.
Product Specifications
Fortress Power eVault Max 48V Lithium Battery (18.5kWh | 360Ah) Product Specifications
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) |
Product Manual
Envy 12 Product Documents
Envy True 12 kW Inverter – Data Sheet
Envy True 12 kW Inverter – Manual
Fortress Power System Design Tool
OGPe Certification
NOM Certification
ENVY 12KW UL1741 SB 3RD Ed. ATM
ENVY-eVault Max UL9540 3RD Ed.
eVault Max Product Documents
Datasheets
eVault MAX Data Sheet
SPANISH eVault Max Data Sheet
SPANISH eVault Max Brochure
Installation Guides / Warranty
Quickstart Guide
Installation Manual
Inverter Guides (how to configure your inverter/charger)
Battery Firmware Download
Warranty Letter
Guardian Manual
Fortress Power Guardian Product Manual
Product Warranty
Fortress Power Warranty – Envy 8k (CDBG)
Warranty Letter
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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