BYD Battery-Box Premium LVL Series User manual

BYD Battery-Box Premium LVL
Operating Manual
V1.0
BYD Europe B.V.

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Legal Provisions
All the information in this document is the property of BYD Europe B.V. No part of this document
could be reproduced in any way for business use. Internal use is allowed.
BYD Europe B.V. makes no representations or warranties express or implied, with respect to this
document or any of the equipment and firmware it may describe, including (with no limitation)
any implied warranties of utility, merchantability, or fitness for any particular purpose. All such
representations or warranties are expressly disclaimed. Neither BYD Europe B.V. nor its
distributors or dealers shall be liable for any indirect, incidental, or consequential damages under
any circumstances.
The exclusion of implied warranties may not apply in all cases under some statutes, and thus the
above exclusion may not apply.
Specifications are subject to change without notice. Every effort has been made to make this
document complete, accurate, and up-to-date. However, BYD Europe B.V. may need to make
some improvements under certain circumstances without advance notice. BYD Europe B.V. shall
not be responsible for any loss caused by this document, including, but not limited to, omissions
errors, typographical errors, arithmetical errors, or listing errors in this document.
All trademarks are recognized.
Limited Warranty
You can download the latest Limited Warranty from the Internet on websites:
BYD Global Service, www.bydbatterybox.com,
BYD service partner in Europe, www.eft-systems.de,
BYD service partner in Australia, www.alpspower.com.au.
BYD Europe B.V.
‘s-Gravelandseweg 256, 3125 BK, Schiedam, the Netherlands

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CONTENT
Legal Provisions.................................................................................................................................2
1. Information On This Document.................................................................................................5
1.1 Validity...........................................................................................................................5
1.2 Target Group..................................................................................................................5
1.3 Content and Structure of This Document .....................................................................5
1.4 Levels of Warning Messages .........................................................................................5
2. Safety.........................................................................................................................................6
2.1 Intended Use.................................................................................................................6
2.2 Important Safety Instructions .......................................................................................6
2.3 Battery module leakage ................................................................................................7
2.4 Firefighting measures....................................................................................................7
2.5 Battery modules handling and storage guide ...............................................................7
2.6 Surge protection............................................................................................................8
2.7 Safety information of an inverter manufacturer...........................................................8
2.8 Output Short-circuit Current and Protective Device Characteristics.............................8
3. Scope of Delivery.......................................................................................................................9
4. System Overview.....................................................................................................................10
4.1 System Description......................................................................................................10
4.2 Technical Parameters ..................................................................................................10
4.3 System structure .........................................................................................................11
4.4 Symbols on The System...............................................................................................12
4.5 LED Signals ..................................................................................................................13
5. Mounting.................................................................................................................................14
5.1 Requirements for Mounting........................................................................................14
5.1.1 Requirements for Mounting Location .............................................................14
5.1.2 Permitted and Prohibited Mounting Positions................................................14
5.2 Mounting.....................................................................................................................14
5.2.1 Needed Tools and Materials............................................................................15
5.2.2 Single System Mounting..................................................................................16
5.2.3 Single Stack Mounting.....................................................................................17
5.2.4 Multiple Stacks Mounting ...............................................................................19
5.3 Electrical Connection...................................................................................................19
5.3.1 Single System Connection ...............................................................................20
5.3.2 Single Stack Connection ..................................................................................24
5.3.3 Multiple Stacks Connection.............................................................................25
5.4 Close the front cover...................................................................................................25
6. Commissioning........................................................................................................................25
6.1 Prerequisites ...............................................................................................................26
6.2 Start the System ..........................................................................................................26
6.3 Stop the system...........................................................................................................27
7. Trouble Shouting .....................................................................................................................28
7.1 Overview .....................................................................................................................28

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7.2 Error codes on BMU....................................................................................................28
7.3 Error codes on BMS.....................................................................................................28
8. Maintenance and Clean ..........................................................................................................29
8.1 Maintenance ...............................................................................................................29
8.2 Clean............................................................................................................................29
9. Disposal of Systems.................................................................................................................30
10. Declaration of Conformity...............................................................................................30
11. Contact Information ........................................................................................................31

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1. Information On This Document
1.1 Validity
This document is valid for the Battery-Box Premium LVL 15.4 from firmware version 1.0.
1.2 Target Group
The instructions in this document may only be performed by qualified persons who must have
the following skills:
•Knowledge of how batteries work and are operated
•Knowledge of how an inverter works and is operated
•Training in dealing with the hazards associated with the installation and operation of
electrical equipment and batteries
•Training in the installation and commissioning of electrical equipment
•Knowledge of, and adherence to the locally applicable connection requirements, standards,
and directives
•Knowledge of, and adherence to this document and the associated system documentation,
including all safety instructions
1.3 Content and Structure of This Document
This document describes the mounting, installation, commissioning, configuration, operation,
troubleshooting, and decommissioning of the system.
1.4 Levels of Warning Messages
The following levels of warning messages may occur when handling the system.
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury

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CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, can result in property damage.
2. Safety
2.1 Intended Use
BYD Battery-Box Premium LVL 15.4 is for residential and small business use and works with a
photovoltaic system. It is a 48V Li-ion battery storage system, with control modules on itself. It
could be operated in either off-grid or on-grid mode with compatible inverters.
The system could be connected with the Internet through network cable for maintenance and
firmware updates.
The system must only be used as stationary equipment.
The system is suitable for indoor use only.
The system must only be operated in connection with a compatible inverter. The list of these
inverters could be read at BYD Battery-Box Premium LVL Minimum Configuration List at our
websites.
The type label should always be attached to the system.
Any use of the system other than that described in the Intended Use section does not qualify as
the intended use.
This document does not replace and is not intended to replace any local, state, provincial, federal,
or national laws, regulations, or codes applicable to the installation, electrical safety, and use of
the system. BYD assumes no responsibility for the compliance or non-compliance with such laws
or codes in connection with the installation of the system.
2.2 Important Safety Instructions
The system has been designed and tested in accordance with international safety requirements.
However, in order to prevent personal injury and property damage and ensure long-term
operation of the system, please do read this section carefully and observe all safety information

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at all times.
2.3 Battery module leakage
If the battery modules leak electrolytes, contact with the leaking liquid or gas should be avoided.
The electrolyte is corrosive, and the contact may cause skin irritation and chemical burns. If one
is exposed to the leaked substance, do these actions:
Inhalation: Evacuate the contaminated area and seek medical help immediately.
Eye contact: Rinse eyes with flowing water for 15 minutes and seek medical help immediately.
Skin contact: Wash the affected area thoroughly with soap and water and seek medical help
immediately.
Ingestion: Induce vomiting and seek medical help immediately.
2.4 Firefighting measures
The battery modules may catch fire when it is put into the fire. In case of a fire, please make sure
that an ABC or carbon dioxide extinguisher is nearby. Water cannot be used to extinguish the fire.
Full protective clothing and self-contained breathing apparatus are required for the firefighters to
extinguish the fire.
2.5 Battery modules handling and storage guide
The battery modules and its components should be protected from damage when transporting
and handling.
The weight of the system may cause injury risk. Please take the weight of the system into account
while the system is transported and lifted carefully.
•Do not impact, pull, drag, or step on the battery modules.
•Do not insert unrelated objects into any part of the battery modules.
•Do not throw the battery module into a fire.
•Do not soak the battery modules in water or seawater.
•Do not expose to strong oxidizers.
•Do not short circuit the battery modules.
•The battery modules cannot be stored at a high temperature (more than 60 °C).
•The battery modules cannot be stored directly under the sun.
•The battery modules cannot be stored in a high humidity environment.
•Use the battery modules only as directed.
•Do not use the battery modules if it is defective, or appears cracked, broken or otherwise
damaged, or fails to operate.
•Do not attempt to open, disassemble, repair, tamper with, or modify the battery modules. The
battery modules are not user-serviceable.
•Do not use cleaning solvents to clean the battery modules.

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2.6 Surge protection
DANGER
Danger to life due to electric shock in case of overvoltages and if surge protection is missing
Overvoltage (e. g. in the event of a flash of lightning) can be further conducted into the building and to
other connected devices in the same network via the network cables or other data cables if there is no
surge protection. Touching lie parts and cables results in death or lethal injuries due to electric shock.
Ensure that the system is integrated into the existing surge protection.
2.7 Safety information of an inverter manufacturer
Please read and observe all safety information of the inverter manufacturer.
2.8 Output Short-circuit Current and Protective Device Characteristics
When the discharge current is bigger than 600A, the BMS short circuit protection (about 100uS
delay) is triggered. First, the primary circuit discharge MOSFET is closed, then the primary circuit
is open, and the battery stops discharging.
Circuit breaker
Rated current
250A
Breaking capacity
25KA 415AC
Poles number
2P
Rated voltage
600VAC, 250VDC

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3. Scope of Delivery
Position
Designation
B1
Battery module 1
B2
Battery module 2
C
Power cable L2
D
Power cable L3
E
Screw M6×12 for fixing grounding conductor and connecting
communication cable with "+" and "-"
F
Screw 10×20 for connecting power cable with "+" and "-"
G
Screw M5×14 for fixing the connector
H
Network cable
I
Grommets (small size)
J
Connector for connecting and fixing B1 and B2
K
Alignment pins
L
Bolts for fixing B2`s top covers
M
Communication cable for connecting the system and BMU
N
Grommets (big size)
O
Quick Start Guide, Minimum Configuration List

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4. System Overview
4.1 System Description
The BYD Battery-Box Premium LVL 15.4 is a lithium iron phosphate (LFP) battery for use with an
external inverter.
With its control and communication port (BMU), the Battery-Box Premium LVL 15.4 is capable of
scaling to meet the different project requirements. Start with Battery-Box Premium LVL15.4
(15.36 kWh) and extend anytime to 983 kWh using parallel interconnection of up to 64 batteries.
The functions of BYD Battery-Box Premium LVL 15.4 including:
•On-grid / off-grid
•Compatible with inverters, and able to store power from PVs
•Compatible with backup function inverters
•Compatible with 1 and 3 phase inverters.
4.2 Technical Parameters
Number of Modules
Two modules
Usable Energy [1]
15.36 kWh
Max Cont. Output Current [2]
250 A
Peak Output [2]
375 A, 10s
Dimensions (H/W/D)
500 x 575 x 650 mm
Weight
164 kg
Nominal Voltage
51.2 V
Operating Voltage
40-59 V
Operating Temperature
-10 °C to +50°C
Communication
CAN/RS485
Enclosure Protection Rating
IP20
Round-trip Efficiency
≥95%
Scalability
Max. 64 in Parallel (983 kWh)
Certification
IEC62619 / IEC62040 / CE / CEC / UN38.3
Application
ON Grid / ON Grid + Backup / OFF Grid
Warranty [3]
Ten years
Battery designation
IFpP/59/417/150/8S/M/-20+50/90
[1] DC Usable Energy, Test conditions: 100% DOD, 0.2C charge & discharge at + 25 °C. System
Usable Energy may vary with different inverter brands
[2] Charge/discharge derating will occur between -10 °C and +5 °C

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[3] Conditions apply. Refer to BYD Battery-Box Premium Limited Warranty.
4.3 System structure
Position
Designation
1
Terminal
2
Power cable port
3
BIC board
4
SPI port
5
COM port
6
Start button with LED
7
B2 module
8
B1 module
9
Foot

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4.4 Symbols on The System
Symbol
Explanation
Observe the documents
Observe all documents supplied with the system.
Grounding conductor
This symbol indicates the position for connecting a grounding conductor.
WEEE designation
Do not dispose of the system together with the household waste but in accordance
with the disposal regulations for electronic waste applicable at the installation site.
CE marking
The system complies with the requirements of the applicable EU directives.
Place it straight up, without inclination or upside down.
Handle with care
Keep it dry
Keep the battery modules away from open flame or ignition sources.
Beware of electrical voltage.
Beware of a danger zone
This symbol indicates that the system must be additionally grounded if additional
grounding or equipotential bonding is required at the installation site.
Keep the battery modules away from children.
Beware of hot surface
The system can get hot during operation.

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4.5 LED Signals
Flashing white and blue
alternatively
BMU and Battery-Box are
initiating.
Glowing white:
Idle (Battery-Box is neither
charging nor discharging).
Flashing white slowly
Battery-Box is charging.
Flashing white quickly
Battery-Box is discharging.
Flashing white and
glowing blue:
Battery-Box is discharging, and
the SOC of Battery-Box is below
15%.
Flashing white and blue
An error has occurred.
Do not short circuit.

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5. Mounting
5.1 Requirements for Mounting
5.1.1 Requirements for Mounting Location
•A solid support surface must be available (e.g., concrete or masonry).
•The mounting location must be inaccessible to children
•The mounting location must be suitable for the weight and dimensions of the system.
•The ambient temperature should be between-10 °C to +50°C
•Transport at the end-customer side：The individual components of the system can weigh up
to 88 kg and therefore, should not be transported by a single person. It is recommended
that the system is installed by at least two people.
5.1.2 Permitted and Prohibited Mounting Positions
•The system may only be mounted in a permitted position. This will ensure that no moisture
can penetrate the system.
•The system should be mounted such that the LED signals can be read off without difficulty.
•The system mounting requires a flat and level surface.
5.2 Mounting
NOTICE
The instructions in this section may only be performed by qualified persons who must have the
following skills:
•Knowledge of how batteries work and are operated
•Knowledge of how an inverter works and is operated
•Training in dealing with the hazards associated with the installation and operation of electrical

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equipment and batteries
•Training in the installation and commissioning of electrical equipment
•Knowledge of, and adherence to the locally applicable connection requirements, standards, and
directives
•Knowledge of, and adherence to this document and the associated system documentation,
including all safety instructions
WARNING
Risk of injury due to the weight of the system
•Injuries may result if the system is lifted incorrectly or dropped while being transported or when
attaching it to or removing it from the wall mounting bracket.
•Transport and lift the system carefully. Take the weight of the system into account.
•Wear suitable personal protective equipment for all work on the system.
5.2.1 Needed Tools and Materials
Name
Remarks
Reference picture
Electric Screwdriver
For use in conjunction with screwdriver tips
Diagonal Pliers
For removal of cable hole protector
Torque Wrench
For confirmation of torques
Straight Screwdriver
6.5 mm flat head, PD2 cross slot，8mm
hexagon，6.5mm cross slot，10mm hexagon，
14mm hexagon
Ground Conductor
SC16-6
Network Cable
Shielded CAT5 (maximum 10 m length)
Wrench
Main loop cable size
70mm² (AWG 2/0), external diameter ＜
18mm, maximum 5 m length

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Main loop cable terminal size
KST TLK70-10 or a similar one
5.2.2 Single System Mounting
Unpack the system
Unpacking the system, check the
number and quality of delivered
accessories (See the scope of delivery).
Pile battery modules
•Pile B2 above B1. Make sure the two
alignment pins are in the right place.
Patience and slow-motion are required
for this step.
Maximum 2 modules are allowed to be
piled together, and a maximum of 2
systems can be piled together.
•Screw the four screws on the top cover
of the B2 module.
Remove front covers
Remove the front cover of B2 and B1.
Fix modules

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Use the connector to fix B1 and B2 with
screw M5×14, two connectors for two
sides.
5.2.3 Single Stack Mounting
A single stack is consisted of two systems.
Repeat the “system mounting” steps and
mount the first system.
Empty cable holes of B1 (the second
system) with diagonal pliers;

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•Screw two alignment pins on top of B2
(the first system);
•Remove the base of B1 (the second
system) with a wrench, and pile B1
above the first system;
•Pile B2 above B1 (the second system);
•Fix B2 and B1 with two connectors;
•Screw up four screws on top of the B2
module.
•Remove the front covers.

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5.2.4 Multiple Stacks Mounting
•Selecting the mounting location for the
stacks;
•Repeat the “mounting single stack”
steps.
5.3 Electrical Connection
NOTICE
The instructions in this section may only be performed by qualified persons who must have the
following skills:
Knowledge of how batteries work and are operated
Knowledge of how an inverter works and is operated
Training in dealing with the hazards associated with the installation and operation of electrical
equipment and batteries
Training in the installation and commissioning of electrical equipment
Knowledge of, and adherence to the locally applicable connection requirements, standards, and
directives
Knowledge of, and adherence to this document and the associated system documentation, including all
safety instructions

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5.3.1 Single System Connection
Connect grounding conductor
Pass the ground conductor through PE port,
and connect with grounding point, with screw
M6×12 (torque, 8Nm.)