Fortress Power eFlex 5.4 Installation Manual
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Fortress Power eFlex 5.4 Installation Manual

5.4kwh 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 nearly 99% efficient round-trip conversion of energy.
The Fortress Lithium Battery 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 5.4

  • Page 1 FORTRESS EFLEX 5.4 kWh LITHIUM BATTERY INSTALLATION MANUAL SECURE YOUR ENERGY WITH FORTRESS LITHIUM BATTERY SYSTEMS Fortress battery systems utilize 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.
  • Page 2 Rev. 1.8 505 Keystone Rd, Southampton, PA 18966, USA (877) 497 6937 techsupport@fortresspower.com www.fortresspower.com...

  • Page 3: 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 site.

  • Page 4: Table Of Contents

    Table of Contents General Information ............................3 Specifications ..............................6 Features ................................7 Registering for the Fortress Power Warranty ..................... 8 1. SAFETY ................................ 8 1.1 General safety precautions ........................8 2. IMPORTANT NOTES ............................ 9 2.1 Transportation and Handling ........................9 2.2 Storage ..............................
  • Page 5 Rev. 1.8 5. OPERATION ............................... 25 5.1 Charging ..............................25 5.1.1 Please follow the following steps to use the charger to charge the battery: ........25 5.2 Discharging ............................25 5.3 Parameter set up guide for Charger/Inverter ..................26 6. DIAGNOSTIC/INTERFACE GUIDE ......................27 505 Keystone Rd, Southampton, PA 18966, USA (877) 497 6937 techsupport@fortresspower.com...

  • Page 6: Specifications

    Rev. 1.8 Specifications Electrical Specifications Mechanical Specifications Nominal Voltage: 51.2V Dimensions: (L*W*H) 21.5x17.5x7.2in (546x446x183 mm) Nominal Capacity: 105AH Weight: 116lbs (53kg) Rated Capacity @ 0.5C (50A): 5.374 kWh Shipping Weight: 123lbs (56kg) Resistance: <10 mΩ Shipping Dimensions: 25.7x22.9x11.3 in Efficiency (at 1C): >99% (652x582x283mm) <0.8%/Mont...

  • Page 7: Features

    Rev. 1.8 Features 505 Keystone Rd, Southampton, PA 18966, USA (877) 497 6937 techsupport@fortresspower.com www.fortresspower.com...

  • Page 8: 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 that Fortress Power is able to honor the warranty, please fill out the warranty letter (available at fortresspower.com/resources) as soon as the system is commissioned and send to sales@fortresspower.com.

  • Page 9: 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 10: Response To Emergency Situations

    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 11: Charging Notes

    Rev. 1.8 2.5 Charging notes The battery must be transported, stored, and used in accordance with the instructions in this manual. If any of the following improper operations occur, this product will cancel the free warranty. If the following scenarios occur, the battery must be charged before use, otherwise the battery damage caused is not covered by the free warranty: ❖...

  • Page 12: System Sizing

    To remedy this situation it is necessary to either add a fourth eFlex battery in parallel. If four batteries is not an option, please contact Fortress Power tech support for help sizing the system. 505 Keystone Rd, Southampton, PA 18966, USA (877) 497 6937 techsupport@fortresspower.com...

  • Page 13: Product Introduction

    Rev. 1.8 3. PRODUCT INTRODUCTION 3.1 Technical data Model eFlex 5.4 Total Energy(kWh) Recommend Charge Current [A] Max. Charge Current (Continuous) [A] Recommend discharge current [A] <68 Max. Discharge Current (Continuous) [A] Max Pulse Current for 5sec [A] Capacity [Ah] Voltage [V] 51.2 (48)

  • Page 14: Unboxing Check List

    Rev. 1.8 3.2 Unboxing Check list The following items are included in the eFlex package: ❖ Battery ❖ 2 x Rubber terminal cap 1. Floor mount stabilization bracket 2. RJ45 adaptor and CAN resistor 3. RS485 Waterproof cable 4. CAN Bus terminator 3.3 Accessories and Part Numbers The following accessories are available for purchase to mount the eFlex in several different ways.

  • Page 15: Installation

    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 16: Installation Considerations

    4.4 Installation Steps 4.4.1. Mounting on a Server Rack The eFlex 5.4 is designed to fit easily into any standard, widely available, 19-inch industrial server rack. Please pay attention to the following major notes when selecting a standard server rack as a battery rack.
  • Page 17 Rev. 1.8 ✓ Overall server rack weight rating needs to be considered according to the total weight of eFlex in one server rack system ✓ Server rack usable depth greater than or equal to 24 inches ✓ Calculate the size of the desired server rack U = Rack Unit (1.75”) Useable Depth [Inch] Server Rack [Rack Unit]...

  • Page 18: Mounting The Battery Pack To A Wall

    Rev. 1.8 4.4.2. 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 19: Floor Standing Installation

    Rev. 1.8 4.4.3 Floor standing installation The eFlex 5.4 can be floor-mounted in several orientations to best suit your application. When determining the battery orientation for floor-mounting, it is important to note that the orientation depicted to the right, with the terminals closest to the floor is NOT recommended.
  • Page 20 If you need to make a communication cable, please refer to the pinout diagram for an RJ45 cable below. CAUTION! Please check with Fortress Power to see if you can use the CAN comm. port to connect the battery to your charge controller or battery-based inverter.

  • Page 21: Using A Single Eflex Battery Pack

    If a shut down is required, always turn the inverter OFF first prior to turning OFF the eFlex battery. If you install multiple inverters with one or more eFlex 5.4, please turn the first Inverter on by following the abovementioned steps, then power up the remaining inverters.

  • Page 22: Parallel Connection Of >1 Eflex Battery

    Rev. 1.8 4.4.7 Parallel Connection of >1 eFlex battery 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 23 CAUTION! Installation should be designed to minimize the voltage drop between battery. there are a few best practices: Maintain identical wire length and wire construction from each Fortress Power Battery terminal to the common bus. If you parallel more than 4 units, a battery combiner/bus bar is highly recommended.

  • Page 24: System Commissioning

    6. See Charge Controller Settings in the Appendix of this manual. Fortress Lithium Batteries are compatible with almost all Inverter Chargers and Charge Controllers. Please contact Fortress Power to learn the recommended settings for any device not explicitly covered in this manual.

  • Page 25: Operation

    Never attempt to charge a battery without first reviewing and understanding the instructions for the charger being used. Only use a Fortress Power Approved Lithium Ferro Phosphate (LFP) charger if ancillary charging is required before installation, testing or troubleshooting. Failure to use a...

  • Page 26: Parameter Set Up Guide For Charger/Inverter

    Rev. 1.8 5.3 Parameter set up guide for Charger/Inverter Before commissioning the energy storage system, the appropriate controller and inverter settings must be programmed per the manufacturer’s recommendations. Consult the manufacturer’s manuals and/or access technical support (Darfon, Schneider, Outback, SMA, Sol-Ark, Magnum, Outback).

  • Page 27: Diagnostic/Interface Guide

    The red “BMS” light will turn on during start-up diagnostic as well as when there is a communication error between batteries. If the problem persists, please contact Fortress Power tech support. In normal operation, the “RUN” LED light will be on. The number of charging lights (LED1-4) that are on depends on the battery state of charge.
  • Page 28 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 techsupport@fortresspower.com www.fortresspower.com...

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