Fortress Power EFLEX Installation Manual

Fortress Power EFLEX Installation Manual

5.4 kwh lithium battery

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FORTRESS EFLEX 5.4 kWh LITHIUM BATTERY INSTALLATION MANUAL
SECURE YOUR ENERGY WITH FORTRESS LITHIUM BATTERY SYSTEMS
Fortress
battery
systems
utilize
the
industry's most environmentally benign
chemistry- Lithium Ferro Phosphate (LFP),
which eliminates operating temperature
constraints, toxic coolants, and the risk of
thermal runaway and fire. The built-in smart
Battery
Management
System
(BMS)
integrates
multilevel
safety
concepts:
Overcharge and Deep Discharge Protection;
Voltage and Temperature Observation; Cell
balancing.
Fortress high-performance Lithium Batteries
are manufactured at the highest quality
standards. It comes with large power
capacity and a fast charging and continuous
discharge power. LFP Chemistry also has nearly twice the cycle life of other Lithium technologies such
as NMC. The proprietary architecture and BMS eliminate the need for cooling or ventilation, which
creates a 98% efficient round-trip conversion of energy.
The Fortress eFlex is safe, easy to install, consistently reliable, and highly efficient. It provides you with
the lowest lifetime energy storage cost.
This installation manual contains information concerning important procedures and features of Fortress
Power lithium batteries. Read all the instructions in this manual before installation, operation,
transportation, storage, and maintenance.

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Summary of Contents for Fortress Power EFLEX

  • Page 1 NMC. The proprietary architecture and BMS eliminate the need for cooling or ventilation, which creates a 98% efficient round-trip conversion of energy. The Fortress eFlex is safe, easy to install, consistently reliable, and highly efficient. It provides you with the lowest lifetime energy storage cost.
  • Page 2: General Information

    Series arrangement can result in damage to Fortress Lithium Batteries and will void warranty! Do not combine Fortress Power Battery with other brands or chemistries. Do not mix different capacity batteries, do not mix batteries from different installations or job sites.
  • Page 3: Table Of Contents

    4.4.4 Connecting the battery to the Charge Controller and/or Hybrid Inverter ........... 16 4.4.5 Using RS485 and CAN Communication ................... 16 4.4.6 Commissioning a single eFlex battery pack ..................17 4.4.7 Commissioning multiple eFlex batteries in parallel ................. 17 4.6 System Commissioning .......................... 19 5.
  • Page 4 Rev. 1.8 5.1 Charging ..............................20 5.1.1 Use the following steps to charge the battery with an external charger: ........... 20 5.2 Discharging ............................20 5.3 Parameter set up guide for Charger/Inverter ..................20 6. INTERFACE GUIDE ............................ 22 505 Keystone Rd, Southampton, PA 18966, USA (877) 497 6937 sales@fortresspower.com www.fortresspower.com...
  • Page 5: Specifications

    Rev. 1.8 Specifications Mechanical Specifications Electrical Specifications Dimensions: 18x23x7.3 inches Nominal Voltage: 51.2V 446x546x183 mm Nominal Capacity: 105AH Weight: 108lbs (49kg) Rated Capacity @ 0.5C (50A): 5.374 kWh Terminal Type: <10 m Resistance: Ring Terminal Size: 3/8ths or larger Efficiency (at 0.5C): Terminal Torque 7.0 –...
  • Page 6: Features

    Rev. 1.8 Features 505 Keystone Rd, Southampton, PA 18966, USA (877) 497 6937 sales@fortresspower.com www.fortresspower.com...
  • Page 7: Registering For The Fortress Power Warranty

    Fortress Power batteries come with a warranty that depends on charge parameters that define the depth of discharge (DoD) and other important variables. To ensure Fortress Power is able to honor the warranty, please fill out the warranty letter at https://www.fortresspower.com/product-warranty/...
  • Page 8: Important Notes

    Wearing insulated gloves, clothing and footwear and using electrically insulated tools are required when working with Fortress Power Lithium Batteries. Cover, restrain or remove jewelry or conductive objects (metal bracelets, rings, belt buckles, metal snaps, zippers, etc.) when working with any electrical or mechanical device.
  • Page 9: Storage

    2.3 Response to emergency situations The battery pack comprises multiple batteries that are designed to prevent hazards resulting from failures. However, Fortress Power cannot guarantee their absolute safety. ❖ Leaking Batteries ❖ If the battery pack leaks electrolyte, avoid contact with the leaking liquid or gas. If one is exposed to the leaked substance, immediately perform the actions described below.
  • Page 10: Charge/Discharge

    Please refer to our sizing guide and warranty letter for appropriate sizes between various inverter models and the eFlex. Using an inverter with a charging rate greater than the maximum charge rate of the batteries (total) will trigger battery safety mechanisms.
  • Page 11: Product Introduction

    Mounting Brackets Floor Mount Bracket x 2 – The floor mounts secure the eFlex to a wall or structure to prevent accidental tipping over of the batteries. Other kinds of mounting brackets are available for purchase.
  • Page 12: Accessories And Part Numbers

    Safe and reliable installation requires trained and certified technicians. The following discussion of Fortress Power Battery configurations is a basic primer. Follow all requirements for Energy Storage Systems in the National Electric Code. Due to the variety of systems and components in the field, all possible scenarios are not covered.
  • Page 13: Inspection Before Installation

    Otherwise, we deem that clients have no objection to the goods. 4.3 Installation Considerations Although the eFlex is IP65 rated, if it is to be installed outdoors it is recommended that the installation location meet the following conditions: ✓ At minimum, the eFlex should be protected from inclement weather with a cover/enclosure.
  • Page 14: Installation Steps

    4.4 Installation Steps 4.4.1 Mounting the battery pack to a wall The eFlex 5.4 can be easily wall-mounted using our custom T-slot brackets. The wall-mounting brackets are sold separately. Please ensure the wall and mounting hardware can handle the weight of the batteries.
  • Page 15: Floor Mount Installation

    Note: the eFlex may be wall mounted in any orientation except for sideways with the terminals near the ground (see section 4.4.2 floor mount installation for picture) 4.4.2 Floor mount installation...
  • Page 16: Other Installation Methods

    8 - M6 or M8 hammer screw to secure the battery to a variety of racks, including 19” server racks. In all cases, a clearance of 1” around the eFlex battery is required. Please visit https://www.fortresspower.com/fortress-power-video-library-2/...
  • Page 17: Commissioning A Single Eflex Battery Pack

    4.4.7 Commissioning multiple eFlex batteries in parallel For a maximum battery bank size of 81KWH, up to 15 eFlex batteries can be connected in parallel. All wires should be an appropriate gauge and constructed to handle the loads that will be placed upon them.
  • Page 18 RJ45 cable into the first RJ485 port, and then plug the other end into the RJ45 pinout converter. 6. Turn on the first eFlex unit and wait 10 seconds for the diagnostic to complete before turning on the next eFlex unit.
  • Page 19: System Commissioning

    5. OFF GRID SYSTEMS: Do not connect the Fortress Lithium Batteries until the entire system is ready to turn on and is fully operational. 6. See Inverter and Charge Controller Settings on the Fortress Power website for recommended settings at https://www.fortresspower.com/resources/...
  • Page 20: Operation

    Rev. 1.8 5. OPERATION 5.1 Charging CAUTION! Do not attempt to charge the battery below 32 degrees F (0 degrees C). Attempts to charge at subfreezing temperatures can adversely affect State of Health (SOH) and cycle life and will void the warranty; never charge battery if it is frozen; never charge a visibly damaged battery.
  • Page 21 Rev. 1.8 Understanding Charge Stage 1. Bulk Charge: Charge at Constant Current (CC) to Bulk/Absorb Voltage 2. Absorption Charge: Maintain Constant Bulk/Absorb Voltage (CV) 3. Terminate when charge current drops below 0.05C 4. Unlike Lead Acid batteries, Lithium Ferro Phosphate batteries do not require Float Charge Charger/Inverter configuration recommendation for best Performance: Note: For inverter-specific integration manuals, visit www.fortresspower.com/Resources...
  • Page 22 6. INTERFACE GUIDE The eFlex has six LEDs on the front face allowing the user to decode the state of the battery as well as any important messages from the BMS. When the eFlex is turned on, each LED will also turn on and display a LED mode.
  • Page 23 Rev. 1.8 PLEASE CONTACT US FOR TECHNICAL SUPPORT Fortress Power, LLC 505 Keystone Road, Southampton, Pennsylvania, 18966 877.497.6937 techsupport@fortresspower.com www.FortressPower.com 505 Keystone Rd, Southampton, PA 18966, USA (877) 497 6937 sales@fortresspower.com www.fortresspower.com...

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