EG4 ELECTRONICS EG4 Life Power4 48v V2 Server Rack User Guide

: September 18, 2024
: EG4 ELECTRONICS

Table of Contents

EG4 Life Power4 48v V2 Server Rack
Technical Specifications
Product Usage Instructions
Battery Safety
Installing the Battery
Battery Communications
Protocol Select
BMS Tools

EG4 Life Power4 48v V2 Server Rack

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Technical Specifications

Abbreviations: ABBREVIATIONS
Battery Safety: BATTERY SAFETY
Battery Diagram: BATTERY DIAGRAM
LED Indicator Status & Definition: LED
INDICATOR STATUS & DEFINITION
Battery Communications: BATTERY
COMMUNICATIONS
Protocol Select: PROTOCOL SELECT
BMS Tools: BMS TOOLS

Product Usage Instructions

Battery Safety

Ensure to follow all safety instructions provided in the
manual.

Installing the Battery

General Installation: Follow the step-by-step
guide in section 8.1 for installing the battery.

Requirements for Installation: Make sure to
meet all requirements listed in section 8.2 before proceeding with
installation.

Installation in EG4 Battery Rack: For specific
instructions on installing in EG4 Battery Rack, refer to section
8.3.

Battery Communications

Multiple Batteries in Parallel: If using
multiple batteries in parallel, follow guidelines in section
9.1.

Communication Cable Pinout and DIP Switch ID
Tables: Refer to section 9.2 for detailed information on
cable pinout and DIP switch settings.

Protocol Change/Selection Procedure: Follow the
procedure outlined in section 9.3 to change or select communication
protocols.

Protocol Select

Protocol ID DIP Switch: Set the protocol ID
using the DIP switch as described in section 10.1.

RS485 Protocol Autodetection: Learn how to
enable RS485 protocol autodetection from section 10.2.

Installing with Different EG4 Battery Models:
Section 10.3 provides guidance on installing with various EG4
battery models.

BMS Tools

Introduction to the BMS: Understand the basics
of the Battery Management System from section 11.1.

BMS Tools Installation and Interfacing: Follow
instructions in section 11.2 for installing and interfacing with
BMS tools.

Frequently Asked Questions (FAQ)

Q: How do I ensure battery safety?

A: Refer to section 3 – Battery Safety for detailed safety

instructions.

Q: Can I install the battery without meeting all
requirements?

A: It is crucial to fulfill all installation requirements

listed in section 8.2 before proceeding with installation to avoid
issues.

Q: What is the protocol change procedure?

A: Section 9.3 outlines the protocol change/selection procedure

for your reference.

Q: How do I set the protocol ID?

A: You can set the protocol ID using the DIP switch as

explained in section 10.1.

Q: Where can I find information on BMS tools?

A: Section 11 provides detailed information on BMS tools,

including installation and interfacing steps.

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EG4® LIFEPOWER4 48V V2 SERVER RACK
QUICK-START GUIDE
©2024 EG4 ELECTRONICS, LLC. ALL RIGHTS RESERVED. VERSION 1.2.1 | INFORMATION SUBJECT TO CHANGE WITHOUT NOTICE. MODEL #: SR-48-100-LP4-IN-02

TABLE OF CONTENTS
1. ABBREVIATIONS …………………………………………………………………………………………………………………………………… 1 2. TECHNICAL SPECIFICATIONS ……………………………………………………………………………………………………………… 2 3. BATTERY SAFETY ………………………………………………………………………………………………………………………………… 4
3.1 SAFETY INSTRUCTIONS……………………………………………………………………………………………………………… 4 3.2 IMPORTANT SAFETY NOTIFICATIONS ………………………………………………………………………………………. 4
4. UL 1973 CONDITIONS OF ACCEPTABILITY………………………………………………………………………………………….. 6 5. PACKING LIST ………………………………………………………………………………………………………………………………………. 7 6. STORAGE CONSIDERATIONS ………………………………………………………………………………………………………………. 7 7. FRONT PANEL CALLOUTS …………………………………………………………………………………………………………………… 8
7.1 BATTERY DIAGRAM ……………………………………………………………………………………………………………………. 8 7.2 LED INDICATOR STATUS & DEFINITION ……………………………………………………………………………………. 9
8. INSTALLING THE BATTERY ……………………………………………………………………………………………………………….. 10
8.1 GENERAL INSTALLATION …………………………………………………………………………………………………………. 10 8.2 REQUIREMENTS FOR INSTALLATION ……………………………………………………………………………………… 10 8.3 INSTALLATION IN EG4 BATTERY RACK …………………………………………………………………………………… 12
9. BATTERY COMMUNICATIONS …………………………………………………………………………………………………………….13
9.1 MULTIPLE BATTERIES IN PARALLEL…………………………………………………………………………………………13 9.2 COMMUNICATION CABLE PINOUT AND DIP SWITCH ID TABLES…………………………………………… 14 9.3 PROTOCOL CHANGE/SELECTION PROCEDURE ………………………………………………………………………..15
10. PROTOCOL SELECT ……………………………………………………………………………………………………………………………. 16
10.1 PROTOCOL ID DIP SWITCH……………………………………………………………………………………………………….. 16 10.2 RS485 PROTOCOL AUTODETECTION………………………………………………………………………………………..17 10.3 INSTALLING WITH DIFFERENT EG4 BATTERY MODELS ………………………………………………………… 18
11. BMS TOOLS…………………………………………………………………………………………………………………………………………20
11.1 INTRODUCTION TO THE BMS……………………………………………………………………………………………………20 11.2 BMS TOOLS INSTALLATION AND INTERFACING ……………………………………………………………………..20
12. FIRMWARE UPDATES………………………………………………………………………………………………………………………… 21 13. TROUBLESHOOTING, MAINTENANCE & DISPOSAL …………………………………………………………………………. 21
13.1 BATTERY CHARGING ………………………………………………………………………………………………………………… 21 13.2 ALARM DESCRIPTION AND TROUBLESHOOTING……………………………………………………………………. 21 13.3 LONG TERM MAINTENANCE ……………………………………………………………………………………………………. 23
14. BATTERY END OF LIFE ………………………………………………………………………………………………………………………. 23 15. EG4 10-YEAR LIMITED WARRANTY…………………………………………………………………………………………………..24

1. ABBREVIATIONS
· AWG American Wire Gauge · A Amps · Ah Amp hour(s) · AC Alternating Current · AFCI Arc-Fault Circuit Interrupter · AHJ Authority Having Jurisdiction · kAIC kilo-Amp Interrupting Capability · ANSI American National Standards Institute · BAT Battery · BMS Battery Management System · COM Communication · CT Current Transformer · DC Direct Current · DIP Dual In-line Package · DOD Depth of Discharge · EG Equipment Ground · EGS Equipment Grounding System · EMC Electromagnetic Compatibility · EPS Emergency Power System · ESS Energy Storage System · E-Stop Emergency Stop · FCC Federal Communication Commission · GE Grounding Electrode · GEC Grounding Electrode Conductor · GFCI Ground Fault Circuit Interrupter · GFDI Ground Fault Detector/Interrupter · Imp Maximum Power Point Current · IEEE Institute of Electrical and Electronic
Engineers · IP Ingress Protection · Isc Short-Circuit Current

· In-lbs. Inch Pounds · kW Kilowatt · kWh Kilowatt-hour · LCD Liquid Crystal Display · LFP Lithium Iron Phosphate · L1 Line 1 · L2 Line 2 · mm Millimeters · MPPT Maximum Power Point Tracking · mV Millivolt · N Neutral · NEC National Electric Code · NEMA National Electrical Manufacturers
Association · NFPA National Fire Prevention Association · Nm Newton Meters · NOCT Normal Operating Cell Temperature · PC Personal Computer · PCB Printed Circuit Board · PE Protective Earth · PPE Personal Protective Equipment · PV Photovoltaic · RSD Rapid Shut Down · SCC Standards Council of Canada · SOC State of Charge · STC Standard Testing Conditions · UL Underwriters Laboratories · UPS Uninterrupted Power Supply · V Volts · VOC Open-Circuit Voltage · VMP Voltage Maximum Power

1

2. TECHNICAL SPECIFICATIONS

MODULE OPERATING PARAMETERS
PARAMETER VOLTAGE CAPACITY CHARGING VOLTAGE (BULK/ABSORB) SOC CUTOFF CHARGING CURRENT DISCHARGING CURRENT MAXIMUM CONTINUOUS DISCHARGE RATE NAMEPLATE ENERGY CAPACITY
BMS PARAMETERS
CHARGE CELL VOLTAGE PROTECTION MODULE VOLTAGE PROTECTION OVER CHARGING CURRENT 1 OVER CHARGING CURRENT 2
TEMPERATURE PROTECTION
DISCHARGE CELL VOLTAGE PROTECTION MODULE VOLTAGE PROTECTION OVER CHARGING CURRENT 1 OVER CHARGING CURRENT 2 SHORT-CIRCUIT
TEMPERATURE PROTECTION
PCB TEMP PROTECTION

BMS
51.2V 100Ah 56.8V 44.8V 100A (Max. continuous) 100A (Max. continuous) 5.12kW 5.12kWh
SPEC
3.8V 60.0V >102A 120A <23°F or >158°F <-5°C or >70°C
2.3V 44.8V >102A >150A >300A <-4°F or >167°F <-20°C or >75°C >221°F (>105°C)

RECOMMENDED
20%* 30A –

DELAY
1s 1s 20s 3s 1s
1s 1s 30s 3s <0.1ms 1s 1s

RECOVERY
3.45V 55.2V
<32°F or >140°F >0°C or 60°C
3.1V 48.0V 60s 60s

14°F or <149°F >-10°C or <65°C <176°F (<80°C)

2

GENERAL SPECIFICATIONS

PARAMETER

SPEC

TYPE

CONDITION

CELL BALANCE TEMPERATURE ACCURACY VOLTAGE ACCURACY CURRENT ACCURACY SOC

120mA 3% 0.5% 3% 5%

Passive Balance
Cycle Measurement
Cycle Measurement
Cycle Measurement
–

Cell Voltage Difference >40mV
Measuring Range 40°F 212°F
(-40°C 100°C)
For Cells/Module
Measurement Range +/-200A
Integral Calculation

POWER CONSUMPTION (SLEEP & OFF MODE)

<300uA

–

Storage/Transport/ Standby

POWER CONSUMPTION (OPERATING)

<25mA

–

Charging/Discharging

COMMUNICATION PORTS

RS485/CAN

–

Customizable

MAXIMUM MODULES IN SERIES

1

MAXIMUM MODULES IN PARALLEL

64

E-STOP FUNCTION

Yes

DIMENSION (H×W×D)

6.1 in. × 19 in. × 17.4 in. (155 mm × 442 mm × 470 mm)

WEIGHT

99.6 lbs. (45.2 kg)

ENVIRONMENTAL PARAMETERS

CHARGING RANGE

32°F 113°F (0°C 45°C)

DISCHARGING RANGE

-4°F 122°F (-20°C 50°C)

STORAGE RANGE

-4°F 122°F (-20°C 50°C)

INGRESS PROTECTION

IP20

STANDARDS AND CERTIFICATIONS

MODULE

UL 1973 ETL Recognized Component Certification UL9540A (Passed)
UL9540 listed with 18kPV-12LV

*EG4 recommends this value be set no lower than 20% to maintain the recommended 80% depth of discharge.

3

3. BATTERY SAFETY

3.1 SAFETY INSTRUCTIONS

Before any work begins, carefully read all safety instructions, and always observe them when working on or with the battery. The installation must follow all applicable national or local standards and regulations. Consult with the local AHJ to obtain the proper permits and permissions before installation.
Incorrect installation may cause:
· Injury or death to the installer, operator or third party · Damage to the battery or other attached equipment

3.2 IMPORTANT SAFETY NOTIFICATIONS

DANGER:

Hazardous Voltage Circuits!

AVERTISSEMENT! Circuits à tension élevée!

There are various safety concerns that must be carefully observed before, during, and after the installation, as well as during future operation and maintenance. The following are important safety notifications for the installer and any end users of this product under normal operating conditions.

1. Do not disassemble the battery. Contact the distributor for any issues that need repair for more information and proper handling instructions. Incorrect servicing or reassembly may result in a risk of electric shock or fire and void the warranty.
2. Never short-circuit DC inputs. Short-circuiting the battery may result in a risk of electric shock or fire and can lead to severe injury or death and/or permanent damage to the unit and/or any connected equipment.
3. Use caution when working with metal tools on or around batteries and systems. Risk of electrical arcs and/or short circuiting of equipment can lead to severe injury or death and equipment damage.
4. Beware of high battery current. Please ensure that the battery module breakers and/or on/off switches are in the “open” or “off” position before installing or working on the battery. Use a voltmeter to confirm there is no voltage present to avoid electric shock.
5. Do not make any connections or disconnections to the system while the batteries are operating. Damage to system components or risk of electrical shock may occur if working with energized batteries.
6. Make sure the battery and rack are properly grounded.
7. An installer should make sure to be well protected by reasonable and professional insulative equipment [e.g., personal protective equipment (PPE)].
8. Before installing, operating, or maintaining the system, it is important to inspect all existing wiring to ensure it meets the appropriate specifications and conditions for use.
9. Ensure that the battery and system component connections are secure and proper to prevent damage or injuries caused by improper installation.

4

WARNING: TO REDUCE THE RISK OF INJURY, READ ALL INSTRUCTIONS!
All work on this product (system design, installation, operation, setting, configuration, and maintenance) must be carried out by qualified personnel. To reduce the risk of electric shock, do not perform any servicing other than those specified in the operating instructions unless qualified to do so.
1. Read all instructions before commencing installation. For electrical work, follow all local and national wiring standards, regulations, and these installation instructions. All wiring should be in accordance with the National Electrical Code (NEC), ANSI/NFPA 70.
2. The battery and system can connect with the utility grid only if the utility provider permits. Consult with the local AHJ before installing this product for any additional regulations and requirements for the area.
3. All warning labels and nameplates on this battery should be clearly visible and must not be removed or covered.
4. The installer should consider the safety of future users when choosing the battery’s correct position and location as specified in this manual.
5. Please keep children away from touching or misusing the battery and relevant systems.
The battery is designed to stop charging when reaching the low threshold of 32°F. If charging current is observed when the internal battery temperature is below 32°F, disconnect battery immediately and consult manufacturer.
DISCLAIMER
EG4 reserves the right to make changes to the material herein at any time without notice. Please refer to www.eg4electronics.com for the most updated version of our manuals/spec sheets.
5

4. UL 1973 CONDITIONS OF ACCEPTABILITY
The products covered in this Report are incomplete in construction features or limited in performance capabilities and are intended for use and evaluation in other products. Consideration should be given to the following when the component is used in or with another product.
1. The battery module SR-48-100-LP4-IN-02 (LifePower4 V2) had been evaluated based upon manufacturer’s specifications for charging, discharging and temperature limits. They have not been evaluated in combination with charger(s) or other control systems in the end use application. Additional evaluations are needed in the end product to determine the compatibility of assemblies with other systems and to ensure that the assemblies are used within their normal operating regions.
2. The battery module Model SR-48-100-LP4-IN-02 does not consider environment test included Salt Fog Test. The acceptance of the battery pack shall be determined in the end use application if the battery pack was used near marine environment.
3. The battery module SR-48-100-LP4-IN-02 is intended to be used in indoor use only. It does not have an enclosure with a UV / Water exposure rating for use in outdoor locations, additional evaluation needed if exposed to sunlight or water in the end use application.
4. The battery module SR-48-100-LP4-IN-02 was dropped from a height of 10cm. If it was installed and serviced more than 10cm in the end use application, the acceptance shall be determined by the end use application.
5. The battery module SR-48-100-LP4-IN-02 has not been evaluated for multiple BATTERY MODULE in parallel or series. Additional evaluation and testing may be needed in the end use application.
6. The instructions for the proper installation and use including charging and discharging, storage, recycling and disposal shall be required for the end use application. These instructions shall include temperature limits, charging and discharging limits as well as instructions regarding the use of any controls or monitoring systems.
See sections 2 5, 10, and 14 for detailed installation instructions to meet these conditions.
6

5. PACKING LIST
When the product is unpacked, the contents should match those listed below:

(1) EG4-LifePower4 Battery Module

(1) Inter-battery Communication
Cable

(1) ea. 4-AWG Pos. and Neg.
Connection Cables

(4) M8-1.0 Terminal Bolts

6. STORAGE CONSIDERATIONS
There are a few steps to be taken to ensure that batteries are stored safely and in a state that will ensure they are not damaged during storage.

Battery State
The state of the battery when placed into storage will affect how long it can be stored as well as the battery’s condition when it is brought out of storage. EG4® recommends that each battery is brought to a 50% SOC (state of charge) before placing it in storage. Lithium batteries will lose a certain percentage of their total charge while in storage, depending on how long they are stored and the conditions they are stored in. EG4 recommends recharging the batteries after 8 9 months in prolonged storage.

Environmental Factors
The storage location for the EG4 battery can greatly affect the health of the battery. For best results, the temperature should remain moderate, between 41°F and 68°F (5°C and 20°C). Keep the battery away from locations where it may get wet or locations with high humidity (>55%). Store the batteries away from combustible materials!

7

7. FRONT PANEL CALLOUTS 7.1 BATTERY DIAGRAM
3 2
1

7

5

4

6

8

NO.

ITEM

1

Rack mount ear

2

Handle

3

Positive terminal

4

CAN

5

RS485

6

Battery Communications

7

Negative terminal

8

Breaker

9

Protocol DIP Switch

10

Battery ID DIP Switch

11

USB Port

12

Reset

13

ALM

14

RUN

15

SOC

16

ON/OFF Switch

17

GND

9 10 11

14 15 16 17

12 13

DESCRIPTION
For battery rack mounting For carrying/handling battery
M8 bolt (x2) CAN communication interface
RS485 communication interface
Parallel battery communication port M8 bolt (x2)
Circuit breaker Select inverter protocol ID for battery arrangement
Reserved Emergency Reset Alarm LED Display Run LED Display State Of Charge Display Turn BMS on/off Ground connection for safety

REMARKS
Secures the battery to the rack –
Pin 4 CAN_H Pin 5 CAN_L
Pin 1 & Pin 8 RS485_B Pin 2 & Pin 7 RS485_A
Used for closed-loop communication –
DC Output
6 position DIP switch 6 position DIP switch, can
support 64 in parallel –
–
–
–
LEDs indicate charge level
–
–

8

7.2 LED INDICATOR STATUS & DEFINITION

STATUS

NORMAL/ ALARM/ PROTECTION

Shutdown/Sleep Normal

Stand-by

Alarm

Charge
Discharge BMS Fault

Normal
Alarm
End-off Voltage
Over-temp Protection Over-current transfer limit protection
Normal
Alarm End-off voltage
Over-temp/ Over-current
protection
–

RUN
OFF ON ON
Short flash Short flash
OFF

ALM
OFF OFF FLASH
OFF Short flash
ON

SOC INDICATOR LED
SOC1~SOC4 OFF
Based on battery indicator
(Each LED indicates 25% SOC)

NOTES
According to the state before stand-by –
–
–

OFF

Short flash

–

Short flash
Long flash Long flash
OFF

Short flash/OFF
OFF Long flash
OFF

OFF

ON

–

Based on battery indicator

Go to sleep
–

OFF

Flash

All OFF

–

9

8. INSTALLING THE BATTERY 8.1 GENERAL INSTALLATION NOTE:
Where ambient temperature is above 86°F (30°C), cable size must be increased according to NEC 310. The 4 AWG cable included in the package is intended only for the connection from the battery module to an EG4 battery rack busbar.
DANGER!
When adding or removing a battery from any rack, cabinet, or busbar, turn off ALL batteries, and use a voltmeter to confirm there is no voltage present. This will prevent users from encountering live (powered) busbars by accident. Failure to do so can result in severe injury and/or death!
Tools Needed for Installation
The tools required may vary depending on the installation location. Typically, the following items are needed to install the battery into an EG4® battery rack solution or general racking:
1. 10mm socket and ratchet 2. Phillips head screwdriver 3. Torque wrench 4. M8-1.0 terminal bolts (included in package)
WARNING:
Do not put EG4 batteries in series! The BMS and internal components are not designed
to handle this setup, which could cause the modules to fail leading to damage.
8.2 REQUIREMENTS FOR INSTALLATION
· Make sure the battery breaker is turned off during the installation process to avoid any electrical hazards or damage to the batteries.
· Avoid exposing batteries to conductive materials, such as water, strong oxidizers, and strong acids.
· Avoid putting batteries in direct sunlight or on extremely hot surfaces. · Keep all flammable materials out of the working area. · Use caution when handling batteries and/or battery-powered devices to avoid damaging the
battery casing or connections. · Before using batteries, inspect them for signs of damage. Never use damaged or puffy
batteries. Please contact the distributor if a battery is received in this state or experiences this issue.
10

CAUTION:
Never position the battery upside down or face down!

Best

Acceptable

11

8.3 INSTALLATION IN EG4 BATTERY RACK
NOTE:
The image below represents 6 EG4® LifePower4 V2 batteries with an EG4 Welded Indoor Cabinet. When installing multiple batteries or adding a battery to an existing rack, please ensure each battery is charged individually to 100% before paralleling them together. This step is crucial to optimize battery performance and ensure proper operation.
1. Insert the battery into the rack slot, beginning with the bottom slot and progressing upward. Slide in until the battery is firmly seated in the rack.
2. Use the included 4 AWG power cable to connect each battery to the busbar.
3. DO NOT finger tighten the battery or busbar terminal bolts. The battery bolts require a certain torque [60 in-lbs. (6.8Nm)] to ensure they do not loosen during operation. Failure to properly tighten the terminal bolts can result in serious damage and will void the warranty.
4. Clearly identify the location of the batteries positive and negative terminals–red to the positive terminal and black to the negative terminal. Then connect to the inverters positive and negative terminals.
Grounding
Attach a grounding wire from the rack/cabinet to an equipment grounding conductor, then terminate the EGC at a grounding electrode.
WARNING:
Do not ground rack/cabinet or door to negative or positive bus bars!
In this image, there are 6 LifePower4 V2 100Ah batteries wired in parallel. This battery bank still maintains the appropriate 48V needed for a system. However, the amp hour rating of this bank has increased to 600Ah. In addition, the potential output amperage of the rack increases.
NOTE:
Use the included battery cables or size the battery cables appropriately! Refer to an NEC approved ampacity chart for specifications.
NOTE:
EG4 recommends using a properly sized (amp rated) busbar to parallel batteries together. Paralleling via the battery terminals will cause inconsistent charging and discharging issues in the bank.
12

9. BATTERY COMMUNICATIONS
Each EG4 Electronics® battery is designed with the end-user in mind, displaying as much information as possible in the simplest manner. EG4 Electronics includes the option of connecting the battery to PC software to monitor the module status. This enables users to monitor and comprehend the battery’s performance and to troubleshoot any issues that may occur. When a single battery is used, it will communicate directly with the system via the RS485 or CAN port. The battery will connect via a properly pinned battery communications cable (included). The communication cable from battery to battery is a standard CAT5 cable. If the battery to inverter communication cable is not long enough to span the distance from inverter to master battery, please refer to the Communication Cable Pinout Table in Section 9.2.
WARNING:
Make sure to install the communication cables into their respective ports! Improper installation may lead to component damage! EG4 recommends double checking all points of connection before introducing power to the system to mitigate any potential issues.
9.1 MULTIPLE BATTERIES IN PARALLEL
1. Ensure all battery breakers and BMS are OFF. 2. Set the address code of each battery according to the DIP
Switch ID Table (see Section 9.2: DIP Switch ID Table), making sure there are no duplicate addresses. 3. Establish communication between the batteries via the “Battery-Comm” ports. Starting with the bottom battery and working all the way to the top battery. (See Section 8.3 for installation) 4. The battery with DIP Switch ID 1 (referred to as the host) connects to the system via communication cable using the RS485 or CAN port. (See image to the right) 5. Power on each battery breaker and BMS ON switch one at a time beginning with the host battery.
13

9.2 COMMUNICATION CABLE PINOUT AND DIP SWITCH ID TABLES
EG4® LifePower4 48V V2 batteries interface with an inverter by designating a “Host” battery (DIP switch ID No. 1). The ID code range is 1 64 and the communication mode can support up to 64 modules in parallel.

1 2 34 5

DESCRIPTION

1

RS485-B

2

RS485-A

3

CAN Ground (optional)

4

CAN High

5

CAN Low

DIP switch ID table 6 Pin

*Pinouts are for battery side; please refer to the system manual for pinout configuration on system end

REMINDER
When paralleling multiple batteries, all DIP switch settings must be different from each other. This allows all equipment to see each battery in the bank separately. EG4 recommends addressing the batteries in ascending order.
14

9.3 PROTOCOL CHANGE/SELECTION PROCEDURE REMINDER:
Only the host battery (Address 1) needs the inverter protocol to be set to communicate with the inverter.
NOTE:
The inverter protocol ID is used for establishing closed-loop communications with supported inverters. The inverters listed in chart 10.1 are capable of closed-loop communications with the battery. All other inverters will not support closed-loop communications with LifePower4 V2 batteries.
1. Power off all battery DC breakers and BMS power buttons. Ensure that the voltage between positive and negative busbars is 0V.
2. Change the inverter protocol selection to match the model of inverter. See section 10.1 for more information.
3. Power cycle the host battery, and the BMS will correspond to the protocol selected.
15

10. PROTOCOL SELECT 10.1 PROTOCOL ID DIP SWITCH

CODE

DIP SWITCH POSITION

1

BRAND EG4/Lux

COMMUNICATIONS CAN

2

Growatt

CAN

3

Sol-Ark

CAN

4

Deye

CAN

5

Megarevo

CAN

6

Victron

CAN

7

Luxpower

CAN

8

SMA

CAN

Note: Protocol DIP switch 6 will be used to allow battery communication to the other batteries
depending on which battery version you have.

In the “ON” position, this allows

the battery to communicate with

9

Complete LINK protocol

the Indoor and Outdoor WallMount and version 2 LL’s

and original batteries with the

Multipack firmware.

In the “OFF” position, this allows

the battery to communicate with

10

Simplified LINK protocol

version 1 LL’s and original

LifePower4 with the Multipack

firmware.

16

10.2 RS485 PROTOCOL AUTODETECTION

NOTE:
When using RS485 communications, the battery will auto detect the inverter protocol being used.

CODE

DIP SWITCH POSITION

BRAND

COMMUNICATIONS

64

EG4

RS485

64

Growatt

RS485

64

Schneider

RS485

Note: Confirm that the RS485 cable being used is pinned correctly in respect to the inverter being used.

DESCRIPTION

1

RS485-B

2

RS485-A

NOTE: BMS ON/OFF switch will have to be powered off and back on for the address
changes to take effect and reengage.

17

10.3 INSTALLING WITH DIFFERENT EG4 BATTERY MODELS
EG4® LifePower4 batteries can communicate with all EG4 48V server rack modules.
NOTE:
When installing multiple batteries or adding a battery to an existing rack, please ensure each battery is charged individually to 100% before paralleling them together. This step is crucial to optimize battery performance and ensure proper operation.
If communicating multiple EG4 batteries together, the Multipack firmware will need to be used via an RS485 Update. For the example below, all batteries will need to be updated EXCEPT the EG4 LifePower V2. RSD will be disabled on the battery models that has this feature when using the multipack firmware. Please visit https://eg4electronics.com/resources/downloads for the Multipack firmware.
1. Always use the newest model of LL at the top of the rack as this will need to be the battery that communicates with the system. This battery is also known as the master and will need to have ID number 1.
2. When installing the batteries, ensure that the same models are grouped together in the bank. This allows for communication to flow between the batteries consistently.
3. After installing the batteries into the rack, refer to the DIP Switch ID table to assign the address code of the bank in numerical order, beginning with the master and progressing among the different models.
The image on the left shows a bank with the following EG4 modules: 1. LL-S (6 DIP) [ID-1]:
Requires Multipack Firmware 2. LL-V2 (6 DIP) [ID-2]:
Requires Multipack Firmware 3. LL-V2 (4 DIP) [ID-3]:
Requires Multipack Firmware 4. LL-V1 [ID-4]:
Requires Multipack Firmware 5. LifePower4 V2 [ID-5]:
No firmware update needed. Set the Inverter Protocol dipswitch set to the “Simplified Link Protocol.” See Section 6. 6. LifePower4 [ID-6]: Requires latest firmware
18

NOTE: If utilizing an external E-Stop switch on the LL-S battery, the following pinout
information stays relevant to the function. Once the E-Stop engages, all batteries in the bank will initiate the stop function.
PARALLEL CABLES NEEDED
To successfully communicate between each model of battery, a standard Cat5e (or higher) cable will need to be connected between each battery.

BATTERY-TO-BATTERY CABLE PINOUT
The pins utilized for battery-to-battery communication are as follows:

LL-V1/LifePower4

Description

7

RS485-B

8

RS485-A

LL-S/LL-V2 (4&6 DIP)

Description

7

RS485-B

8

RS485-A

NOTE: When using LL-V1 and LifePower4 batteries in communications with the LL-S/LL-V2
multi-pack firmware, ensure the communications cable between the LL-V2 and all older model batteries down are pinned to this standard. If there are extra pins populated, the LL-S will trip its breaker if it receives a signal from pins 3 or 6 along with all other batteries in this parallel configuration.

The battery will only send a transmit/receive signal over these two pins. Ensure the battery-to-battery communication cable is only utilizing pins 7 & 8.
FIRMWARE UPDATES
Visit https://eg4electronics.com/resources/downloads to get the latest version of the software. The file can be located on the downloads page underneath the product in question. Once the file has been downloaded, unzip the file. Once the file is unzipped, refer to the included “Connection guide for BMS Tools V1.0.pdf” for an extensive walkthrough to set up BMS Tools. If confirmation of the port numbers for battery to PC communications is needed, please consult the following section.

UPDATE CABLES NEEDED
Each battery requires the same RS485 cable to apply the firmware updates. Please refer to the table below for the pinout description. Ensure all batteries’ firmware matches the numbers listed below for seamless communication.

Description

1

RS485-B

2

RS485-A

MULTIPACK FIRMWARE VERSIONS NEEDED

Listed below are the multipack firmware version numbers that need to be used for each battery type:

1. EG4 LL V2/S (ID:6) 51.2V 100ah: 2. EG4 LL V2 (ID:4) 51.2V 100ah: 3. EG4 LL V1 51.2V 100ah: 4. LifePower4 51.2V 100ah:

Z02T12 Z01T16 V15P15 V3.37 or V2.16

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11. BMS TOOLS
11.1 INTRODUCTION TO THE BMS
The BMS is intended to safeguard the battery and battery cells against a variety of situations that could damage or destroy system components. This protection also aids in keeping the battery and battery cells operational for a greater number of life cycles. Each EG4® LifePower4 battery is specifically configured to ensure peak performance and operation with any system.
PCB temperature protection The BMS will ensure that the Printed Circuit Board (PCB) does not overheat. This is the part that houses most of the “brains” of the battery. This feature will turn the battery off if it begins to overheat.
Cell balance protection Cell balance ensures that each cell is within a specific voltage range of each other. Cell balance is crucial for ensuring that the battery is operating properly for its lifespan. This is always done automatically.
Environmental temperature protection It may be dangerous to attempt to use the battery in extreme heat or cold. Continued operation in these conditions may result in permanent damage to the battery module and its components. To prevent this, the BMS is designed to measure the temperature while charging/discharging and will shut down the battery to prevent damage.
Voltage protection The BMS is designed to continuously monitor the voltage of each individual cell and ensure that they are not over/undercharged.
Current protection The BMS is designed to constantly monitor the charge/discharge amperage and has built-in safeguards against exceeding specific parameters. These include built-in timers that shut off quickly in the event of short circuits, extremely high amperage, and delayed shut down for amperage that is only slightly above the maximum capacity.
11.2 BMS TOOLS INSTALLATION AND INTERFACING
The PC software “BMS Tools” provides real-time battery analysis and diagnostics. The battery cannot communicate with BMS Tools and a closed loop inverter at the same time.
Visit https://eg4electronics.com/resources/downloads to get the latest version of the software. The file can be located on the downloads page underneath the product in question.
Once the file has been downloaded, unzip the .zip file. Once the file is unzipped, refer to the included “Connection guide for BMS Tools V1.0. or V2.2.1.pdf” for an extensive walkthrough to set up BMS Tools.
If confirmation of the port numbers for battery to PC communications is needed, please consult the following section.
For instructions on how to interface with BMS Tools, please scan the QR codes below.

BMS Tools White Sheet

BMS Tools Video Walkthrough

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12. FIRMWARE UPDATES
Always ensure all system components are fully up to date before commissioning the system and that all battery firmware is up to date to support proper closed loop communication.
Please visit https://eg4electronics.com/resources/downloads for the latest firmware.
13. TROUBLESHOOTING, MAINTENANCE & DISPOSAL
13.1 BATTERY CHARGING
Ensure the proper settings are set on the charge controller and/or inverter being used to avoid overcharging or damaging the module. (Refer to Section 2: Technical Specifications Table for a full list of charging/discharging parameters.)

IMPORTANT:
It is normal for lithium batteries with an internal BMS that are wired in parallel to demonstrate a wide variety of SOC readings during any given charge or discharge cycle. Variations of up to 10% are common. This is not cause for concern or indication that the module is providing less than the maximum capacity. This can be caused by a few different factors, including variations in wire resistance, internal battery resistance, temperature differences and cell variations. Even a slight variation causes one battery to take more of the load or charge for a short time. Over the duration of the discharge or charge cycle, this will balance out with the lagging battery taking the load or charge at the other end of the cycle resulting in recovering the full listed kWh capacity of the pack. The voltage differences created as batteries diverge in SOC will eventually cause them to converge at some point in the cycle.

13.2 ALARM DESCRIPTION AND TROUBLESHOOTING
When the ALM light on the battery control panel is on, it means that the battery has given an alarm or has been protected from potential damage. Please check the cause of the failure through EG4 Monitor Center or BMS Tools and take appropriate measures or go directly to the battery site to troubleshoot. BMS Tools alarms are shown in the table below.
Warning and Protect Status Definitions Table:

STATUS NAME

DEFINITION

ACTION

Charge

Charge OT Charge UT

Charge over-temperature Charge under-temperature

Power off module and cool down location. Power off module and warm up location.

Discharge

Discharge OT Discharge UT

Discharge over-temperature Discharge under- temperature

Power off module and cool down location. Power off module and warm up location.

NOTE:
The “Historical Record” tab, which can be found in the BMS Tools program, can indicate what occurred with the module before entering a warning or protection state. It is recommended to export this data into a text (.txt) file to provide to the distributor for any additional troubleshooting assistance.

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