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Enhance your energy storage capabilities with our exclusive bundle featuring the Fortress Power DuraRack, a versatile iron enclosure designed to house up to 4 eFlex 5.4 kWh batteries, expandable up to 15 eFlex batteries (81 kWh). The DuraRack includes integrated busbars, a DIN rail heater mount, and supports indoor/outdoor installations. Paired with eFlex 5.4kWh G2 Lithium Iron Phosphate (LFP) Batteries, this bundle provides a robust and scalable energy storage solution equipped with advanced features for maximum reliability, making it ideal for your renewable energy needs.
DuraRack:
Expand your energy storage with the Fortress Power DuraRack. This iron enclosure stores up to 4 eFlex 5.4kWh batteries, and is expandable up to 4 units (15 eFlex batteries, 81KWh). The DuraRack includes integrated busbars and a DIN rail heater mount. This enclosure can be free-standing or pad mounted and is safe for indoor and outdoor installations. The DuraRack comes with a 3 year limited warranty.
Key Features:
- IP65 Water and Dust Resistant for Both Indoor and Outdoor Install
- Included Integrated Busbars and Battery Cables for Easy Stacking
- Easy to Add Din Rail Thermostat for Cold Climates
- Passive Cooling Vent for Warm Climates
- Expandable Up to 4 Unites (15 eFlex Batteries; Total 81 kWh)
eFlex:
The Fortress Power eFlex is a 5.4 kWh scalable energy storage solution based on safe and energy dense prismatic Lithium Iron Phosphate cells. The digital processor Battery Management System (BMS) includes high amperage contactor disconnects and advanced Closed-Loop inverter communication, as well as individual cell voltage monitoring, temperature monitoring, and cell balancing to maximize reliability and longevity.
Canbus, modbus, and wifi communication enable internet-of-things compatibility. The IP65 case ensures direct water spray and dust will not penetrate the battery internals from all directions. The unit can be wall mounted, floor mounted, and server rack mounted for hard-to-reach access in renewable, marine, RV, mobile, telecom, railway applications and more.
3 Batteries Total 16.2 kWH
4 Batteries Total 21.6 kWh.
Key Features:
- Rugged, Long-lasting, Daily Use Battery
- Safe Lithium Iron Phosphate Technology (LifeP04)
- 98% Round Trip Efficiency
- Flexible Mounting Options
- Remote Monitoring including wifi, modbus, and canbus
- BMS Monitors & Balances Individual Cells
- NRTL certified to UL9540 and UL9540a standards
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DuraRack Specifications
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| 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 |
5.4kWh – 21.6 kWh per unit |
| Max. Storage Capacity |
81 kWh (4 unites 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 Inveter |
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 |
| eFlex Specifications |
| Name |
eFlex 5.4 |
| Total Energy(kWh) |
5.4 |
| Max. Charge Current (Continuous) [A] |
100 |
| Max. Discharge Current (Continuous) [A] |
60 |
| Max. Pulse Current (for 5 sec) [A] |
130 |
| Capacity [Ah] |
105 |
| Voltage Range [V] |
48-55 |
| Charging Temperature [F] |
32 to 113 |
| Discharging Temperature [F] |
32 to 140 |
| Storage Temperature [F] |
32 to 95 |
| Dimension [L x W x H, inch] |
21.5 x 17.5 x 7.2 |
| Weight [lbs] |
116 |
| Life Cycles |
8000 @ 80% DoD |
| Round Trip Efficiency |
>98% |
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DuraRack
DuraRack Data Sheet
DuraRack Installation Manual
eFlex
Datasheets
eFlex Data Sheet
eFlex Data Sheet (Spanish)
eFlex Brochure (Spanish)
Installation Guides/Warranty
eFlex Warranty
eFlex Owner/Installation Manual
Inverter Integration Guides How to Configure Your Inverter/Charger)
Firmware
Racking Details
DuraRack Manual
Customer Server Rack Guide
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Shipping is typically through freight carriers and the actual shipping time is contingent on your location and the specific warehouse dispatching your order. Please allow for a 1-3 business day processing period before shipment, and an estimated delivery time of up to 7 business days. Your confirmation email will include delivery details and we will send you a tracking number as soon as one is available. If you ordered several separate items, you may receive multiple tracking numbers. Once the item has been shipped, the freight service will contact you to coordinate the date and time of delivery. If you require any special accommodations during delivery please let us know as soon as possible and let the delivery company know when arranging the appointment.
Typically, orders will be dropped off either curbside or outside your front door or garage. It is your responsibility to bring the order inside or to its final destination and to remove any existing items.
Depending on the item, parts may be shipped in multiple boxes, and assembly may be required. When your order is delivered, please check that you have all pieces of the item and that nothing is damaged. If your order is damaged during transit and external damage is visible, note the damage immediately, write it on the delivery documents, take photos and/or videos, and refuse shipment. If there is no visible external damage, accept the package but note “subject to concealed damage” on the delivery documents. Any damage upon delivery needs to be reported within 24 hours of delivery or you may not be eligible for a refund. For additional information on submitting claims, as well as incorrect item exchanges, and replacements, please see our Refund Policy.
For more information about shipping, please visit our complete Shipping Policy.
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