Rentech SILVERBRIC Series User manual

USER MANUAL

SHENZHEN BAK POWER BATTERY CO., LTD
Integrated Lithium-ion Battery Pack
User Manual
Version：V1.4
Released Date：2020-07-23

Copyright ©SHENZHEN BAK POWER BATTERY CO., LTD 2019. All rights reserved.
Without the company's written permission, no unit or individual may unlawfully copy in part or in whole
the content of this document and shall not disseminate it in any form.
Trademark Statement
and BAK other trademarks are the trademarks of SHENZHEN BAK POWER BATTERY
CO. LTD. All other trademarks or registered trademarks mentioned in this document, by the
respective owners.
Attention
On purchasing the products, services or features, such as international commercial contracts, you
accept and are bound by the terms described in this document, in part or in whole, the product, services
or features are strictly for your own purchase or use. Unless otherwise agreed in the contract, BAK does
not make any express or implied representations or warranties within the content of this document.
For product version upgrades or other reasons, this document will not be updated on a regular basis.
Unless otherwise agreed, this document serves only as a guide, all the statements in this document,
information and recommendations do not constitute any express or implied warranty.
SHENZHEN BAK POWER BATTERY CO., LTD
Add: BAK Industrial Park. Kuichong Street. Dapeng District. Shenzhen. China
Phone: [phone]
E-mail:[e-mail]
Website: www.bak.com.cn

Integrated Lithium-ion Battery Pack
User Manual
FOREWORD
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ii
FOREWORD
Overview
This manual describes the installation, history recording, and parameter settings of
the battery and provides safety and general information.
Readers
This document provides technical details regarding the tools and infrastructure for the
following users:
Sales engineer
Technical support engineer
Installation engineer
Application engineer
Maintenance engineer
Symbol convention
The following symbols may appear in this article and they are represented as follows:
Symbol Indication
Used as warning in an emergency, if not avoided, it will result in
death or serious personal injury.
Used as a warning of a medium or low potential hazards, if
not avoided, it may cause minor or mild injury.

Integrated Lithium-ion Battery Pack
User Manual
FOREWORD
All Right Reserved © SHENZHEN BAK POWER BATTERY CO., LTD
iii
Used as a warning of potential dangers, if this information is
ignored, it may result in equipment damage, data loss,
equipment performance decrease and other unpredictable
results.
represents supplementary information.
Change History
Changes between document issues are cumulative. The latest document issue
contains all the changes made in previous issues.
Version：V1.4 (2020-07-23)
This version is the third official release including the 24V series batteries.

Integrated Lithium-ion Battery Pack
User Manual
DIRECTORY
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TABLE OF CONTENTS
FOREWORD..................................................................................................................................... ii
TOC ................................................................................................................................................... iv
1OVERVIEW .................................................................................................................................... 6
1.1 Product specification .............................................................................................................................................. 6
1.2 Product profiles........................................................................................................................................................ 7
2ILLUSTRATION.................................................................................................................................. 8
2.1 Panel description ..................................................................................................................................................... 8
2.2 The working principle........................................................................................................................................... 13
2.3 The product features ............................................................................................................................................ 14
3INSTALLATION GUIDE ............................................................................................................ 16
3.1 Installation precaution notes.............................................................................................................................. 16
3.2 Installation preparation........................................................................................................................................ 18
3.2.1 Unpacking and inspection ............................................................................................................................... 18
3.2.2 Installation tools ................................................................................................................................................. 19
3.3 Installation and wiring.......................................................................................................................................... 20
3.3.1 Standard cabinet installation........................................................................................................................... 20
4MAINTENANCE......................................................................................................................... 24
4.1 Electrical maintenance ......................................................................................................................................... 24
4.2 Battery maintenance............................................................................................................................................. 25
4.3 Treatment for malfunctions................................................................................................................................. 25

Integrated Lithium-ion Battery Pack
User Manual
DIRECTORY
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5SPECIFICATIONS....................................................................................................................... 30
5.1 Technical specifications........................................................................................................................................ 30
5.2 The main performance index of the battery .................................................................................................. 34
6ENVIRONMENT PROTECTION............................................................................................. 35
6.1 Environmental Label ............................................................................................................................................. 35
6.2 Recycle...................................................................................................................................................................... 35
7APPENDIX ................................................................................................................................... 36
7.1 Connection cable................................................................................................................................................... 36

Integrated Lithium-ion Battery Pack
User Manual
1 OVERVIEW
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1 OVERVIEW
1.1 Product specification
The model number of the integrated lithium Ion battery (hereafter referred to as
lithium battery or PACK) is shown in figure 1-1. It is currently available in a 50Ah
(BTESF48V50-R),100Ah (BTESF48V100-R), 150Ah (BTESF48V150-R), as well as
24V 100Ah (BTESF24V100-R) and 24V 200Ah (BTESF24V200-R).
Figure1-1 The explanation of the product model number
B T E S F 4 8 V 1 0 0 –R
------ - ----- ----- -
1 2 3 4 5 6
1Trademark of BAK
2Application: Standby and Solar
3Cell material: LFP
4Nominal voltage (actually 51.2V)
5Capacity: 100Ah
6Mounting: Rack

Integrated Lithium-ion Battery Pack
User Manual
1 OVERVIEW
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1.2 Product profiles
The lithium battery group is developed by SHENZHEN BAK POWER BATTERY CO., LTD.
Belonging to one of the series of 48V and 24V back-up lithium battery products, the
system uses international advanced lithium iron phosphate battery application
technology and BMS control technology. Due to its long lifecycle, small size, light weight,
stable performance, safety and environmental protection, as well as a strong ability to
adapt, it can be used in harsh outdoor environments.
The system integrates advanced battery management system (BMS), including
charge and discharge management, thermal management, communication
management, balance management, data management, and realize remote
centralized monitoring, remote management and maintenance of the battery. It has
outstanding advantages in specific applications such as backup power supply as
widely used in remote access network equipment, exchanges, mobile
communication equipment, transmission equipment, satellite and microwave
communication equipment and communication.
With the operating voltage programmed in the BMS to 44V to 55.2V and 22V to
27.6V respectively, the battery can also be used in cyclic applications such as PV
power systems.

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Integrated Lithium-ion Battery Pack
User Manual
2 ILLUSTRATION
2 ILLUSTRATION
2.1 Panel description
The BTESF series lithium battery front panel is shown in Figure 2-1 below.
Figure 2-1 Module front panel
For detailed descriptions of each location, see the following figure 2-2.

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User Manual
2 ILLUSTRATION
Figure 2-2 Front Panel Definition
12 3 4 5 6 7 8 9 10 12 13 11
Handle
Made of galvanized steel for lifting.
SOC
The meaning of SOC indication light shown in table 2-1.
Table 2-1 The relationship between the capacity of the battery and the SOC light
●●●●Capacity
¤¤¤¤75%-100%
¤¤¤○50%-75%
¤¤○○25%-50%
¤○○○0%-25%
¤Indicates ON，○ Indicates OFF。
1 Handle
2 SOC (capacity light)
3 ALM
（
alarm
）
4 RUN
5 ADD 6 RS232 7 RS485 8 RESET
9 Dry Contact
(not used)
10 Main panel 11 Mounting holes 12 Output-
13 Output
﹢

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Integrated Lithium-ion Battery Pack
User Manual
2 ILLUSTRATION
ALM
When the battery has a fault condition, the "ALM" light is red.
RUN
During charging, the "RUN" light will be green.
During discharging, the "RUN" light will be flashing.
"RUN" and "ALM" can display the battery status, as shown in table 2-2.
Table 2-2 The explanation of “RUN” and “ALM”
Function Mark Color Flashing frequency Indication
Running RUN Green No light Not working
Slow Flash (about 3 secs) Standby state
Fast flash Working state
Alarm ALM Red No light Normal
Stable light Alarm
ADD
When batteries are used in parallel, the four dip switches are used to set the
batteries’ addresses in the system. The address settings are shown in table
2-3.
Table 2-3 Dip switches address code
Address Code ADD PACK
Definition
Explanation
1 2 3 4
OFF OFF OFF OFF 0 PACK0 Use as Single Pack
ON OFF OFF OFF 1 PACK1 Use as MasterPack
(When more than one
used in parallel)
OFF ON OFF OFF 2 PACK2 Use as SlavePack2
ON ON OFF OFF 3 PACK3 Use as SlavePack3
OFF OFF ON OFF 4 PACK4 Use as SlavePack4
ON OFF ON OFF 5 PACK5 Use as SlavePack5
OFF ON ON OFF 6 PACK6 Use as SlavePack6
ON ON ON OFF 7 PACK7 Use as SlavePack7
OFF OFF OFF ON 8 PACK8 Use as SlavePack8

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Integrated Lithium-ion Battery Pack
User Manual
2 ILLUSTRATION
Address Code ADD PACK
Definition
Explanation
1 2 3 4
ON OFF OFF ON 9 PACK9 Use as SlavePack9
OFF ON OFF ON 10 PACK10 Use as SlavePack10
ON ON OFF ON 11 PACK11 Use as SlavePack11
OFF OFF ON ON 12 PACK12 Use as SlavePack12
ON OFF ON ON 13 PACK13 Use as SlavePack13
OFF ON ON ON 14 PACK14 Use as SlavePack14
ON ON ON ON 15 PACK15 Use as SlavePack15
RS232
The system uses RS-232 series communications to load data and transfer data
including: system parameters, system status and alarm information.
RS-232 generally uses 9600bps. The RS-232 port on the battery is only active when
the dip switch is set to Single Pack mode (ON,OFF,OFF,OFF). Connection is as
shown in figure 2-3.
Figure 2-3 RS-232 connection schematic diagram

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Integrated Lithium-ion Battery Pack
User Manual
2 ILLUSTRATION
RS485
RESET
When the system is in parallel mode, it uses the RS-485 serial port for data
transfer. The main system (Charger/Inverter controller or PC) connects through
the Master Pack to get the data for each Slave Pack. Connection as shown in
figure 2-4.
Figure 2-4 RS-485 connection schematic diagram
Press RST key for 3 seconds to start the device, or press the RST key for 3 seconds
again to shut down the device. When the system is running, should there be an
exception (alarm), press this button for 6 seconds to reset the system (press /
release) to ensure the stability of the system.

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Integrated Lithium-ion Battery Pack
User Manual
2 ILLUSTRATION
Dry contact
The two dry contacts can be used as control inputs to an inverter/charger to stop
charging when the battery is at 100% SOC, stop discharging at 80% DOD or stop
when there is an alarm or fault condition.
Dry 1
Closed: Normal
Open: Stop charging
Dry 2
Closed: Normal
Open: Stop discharging
Output
A terminal of 4 connections, 2 for positive, 2 for negative, each connection is for a
M6 ring-lug.
LCD display（optional）
LCD display can read Battery status, cell status, firmware version, protection/alarm,
etc.
2.2 The working principle
BTESF series lithium battery pack is equipped with charging and discharging
management module and monitoring module.
Charge and discharge management module protects battery charge and discharge
functioning, prevents overcharging, discharge over-current by adapting the DC input
as required for the charging process, and disconnecting the battery when fully
discharged.
The monitoring module provides the cell balance function and power, temperature
and SOC. The monitoring module transmits the real-time information collected in
the operation of the product through the protocol network to the monitoring platform,
and the user can observe the operation status of the battery in each group through
the display screen.
A single 48V module is 51.2V, 50Ah, 100Ah or 150Ah and a 24V module is 25.6V
100Ah and 200Ah. It can be used in standby applications such as telecom power as
shown in figure2-6, or in Solar/Wind applications with solar/wind charge
controller/inverter instead of the rectifier.

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Integrated Lithium-ion Battery Pack
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2 ILLUSTRATION
Figure 2-6 Telecom standby application example
2.3 The product features
BTESF series integrated lithium battery pack has the following
remarkable characteristics:
The lithium iron phosphate cathode material has a long cycle life and its safety
is extremely good.
The operating temperature range is: 0 ~ 45 ℃.
It has strong charge and discharge capacity: charge and discharge rate can
support 1.0C.
It can support up to 15 batteries in parallel for expansion.
During storage and transport, the battery is set to sleep mode (Off), in order to
reduce the loss of capacity and disconnect active power from the output terminals
for enhanced safety.
The Port design is convenient; all wire harness connected to the plug,
convenient connection.
Lightweight, small size, easy to install and maintain, meets the requirements of
the standard cabinet, is able to be wall mounted, or mounted on a pole.
Built-in Battery status monitoring system (BMS) for real-time monitoring of
current and voltage, temperature, alarm and protection function.
The function of "four remote" (telemetry, remote signaling, remote regulatingand
remote control), can be connected by computer with remote control center.
It is environmentally friendly.
1) Telemetry: voltage, current, temperature, SOC, SOH (optional), etc.
2) Tele-signal state of charge and discharge, overcharge / overcurrent, under voltage

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Integrated Lithium-ion Battery Pack
User Manual
2 ILLUSTRATION
overcurrent alarm / alarm, environment / battery /PCBA/ battery temperature alarm, low
environmental temperature alarm, battery capacity is too low, the battery temperature /
voltage / current sensor failure alarm, battery failure alarm (just not cut off the monomer
pressure high limit alarm) (optional), battery failure alarm (optional).
3) Remote control: charge / discharge (optional), alarm sound off, intelligentintermittent
charging mode, current limiting charging mode, etc.
4) Optional: Battery charge / discharge management parameters and the output parameters
of the switching power supply system.

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Integrated Lithium-ion Battery Pack
User Manual
3 INSTALLATION GUIDE
3 INSTALLATION GUIDE
3.1 Installation precaution notes
Comply with local laws and regulations
When operating the equipment, make certain to comply with local laws and
regulations.
Personnel requirements
Technicians who are responsible for installation and maintenance are required to
undertake strict training on the BAK batteries first. Master the correct methods for
operation and safety, only then the installation, operation and maintenance can be
carried out.
In order to maximize the efficiency of the equipment, to obtain best possible
operating results, and ensure maximum lifespan, please pay careful attention to the
correct installation and usage requirements.
Personal safety
Insulated tools and gloves should be used and worn at all times – During the
installation process, watches, bracelets, rings and other metal products should
be removed.
Avoid any fall or collision during the installation process.
Do not remove the battery components. The maintenance of the battery should
be carried out by a professional engineer.
Should be operated and supervised by engineer who have experience and can
take preventive measures for potential hazards of battery.
Field and environment
Site requirements
1) Cleanliness
Lithium battery packs cannot be placed in or near garbage disposals, or accidentally
dropped or placed in smaller disposal units, as their interaction with metals is likely to
cause short circuits and endanger the system and personal safety.
2) Fire protection
The battery storage or installation room must not contain flammable, explosive and
other dangerous goods, and it should be equipped with effective fire equipment
(such as CO2 fire extinguishers).

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Integrated Lithium-ion Battery Pack
User Manual
3 INSTALLATION GUIDE
3) Ventilation and heat dissipation
For optimum operation and maintenance access the equipment should be installed
with 30cm – 50cm clearance all round, with preferably 50cm clearance above it. If
installed in a cabinet or cramped area, an exhaust fan should be installed to
maintain good indoor ventilation.
4) Installation requirements
Installation should be carried out as shown in figure 3-1 in order to avoid possible
risks.
Put the lithium battery on the ground (to avoid tilt, uneven ground).
Avoid placing in the sunlight, rain or wet surfaces.
Figure 3-1 Requirements for installation scenarios
Environmental requirements
Ambient temperature: ( -10~+40) ℃.
Relative humidity level: 0%RH~95%RH, no condensation.
Cooling method: air cooler.
Height above sea level: match to the standard requirement of GB3859.2-93.
Verticality: no vibration and the vertical inclination does not exceed5º.
Pollution level: Level ⅱ.
Recommended operating temperature : (20~25) ℃, humidity level control within 50%.

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Integrated Lithium-ion Battery Pack
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3 INSTALLATION GUIDE
Do not install in a working environment with metal conduction type dust.
Do not install in an area containing corrosive gases.
Do not install in high dust concentrated areas.
Do not place any items on the top of lithium-ion battery pack. People must not sit on the
battery.
Power check
Before installation, please confirm that the load capability of inlet wire meets the
requirements of the new equipment. Check to see if the power supply corresponds to
the equipment nameplate of the voltage and frequency and if the current capacity
has decreased due to the aging of the wire.
If in doubt, please check with your local power supply Consultation Department.
Ground wire
Earthing terminal is available; zero voltage with reference to main earth cannot
exceed 5V.
DC output voltage and load capacity
Lithium-ion battery pack of nominal DC output 48V:
50Ah/50A DC, 100Ah/100A DC, 150Ah/150A DC.
And nominal DC output 24V: 100Ah/100A DC, 200Ah/200A DC.
When installing the lithium-ion battery pack, the user should check thelithium-
ion battery pack in advance to make sure that the contacts and connectors are safely in
place to avoid an open circuit or short circuit fault.
During installation, do not connect the lithium batteries polarity in reverse or in any
way incorrectly, to avoid causing a short circuit.
Please do not connect the terminals with no security or insulation protection, so as to
avoid the risk of electric shock.
3.2 Installation preparation
3.2.1 Unpacking and inspection
BTESF series lithium batteries and accessories use packaging of cardboard boxes
or wooden boxes. When unpacking, be careful when dismantling. Inspect the
device and accessories according to the package list, to ensure it’s complete and
make certain nothing was damaged during shipping.
Before clearing the packaging, make sure that all parts are included. If equipment
or accessories are damaged in transit, or incomplete or incompatible, the equipment,