BYD Battery-Box Pro 2.5 User manual

BYD Battery-Box Pro User Manual
Battery-Box Pro 2.5~10.0
Version 4.0

1
Contents
1 General Information ................................................................................................................................3
1.1 Validity...............................................................................................................................................................................3
1.2 Application.......................................................................................................................................................................3
1.3 Intended use ...................................................................................................................................................................3
1.4 Battery-Box and B-Plus L definition........................................................................................................................3
1.5 Identifying the Product ...............................................................................................................................................4
2 Safety.........................................................................................................................................................4
3 Technical Data ..........................................................................................................................................5
4 Technical Terms .......................................................................................................................................6
5 Product Overview ....................................................................................................................................6
5.1 Battery-Box System brief introduction ..................................................................................................................6
5.2 Battery-Box configuration table ...............................................................................................................................8
5.3 General introduction of BMU....................................................................................................................................8
5.4 General introduction of B-Plus L 2.5.......................................................................................................................8
5.5 Operating environment...............................................................................................................................................9
6 Cleaning and Maintenance .....................................................................................................................9
6.1 Cleaning ............................................................................................................................................................................9
6.2 Maintenance................................................................................................................................................................. 10
6.2.1 Recharge requirement for normal storage................................................................................................10
6.2.2 Recharge requirement when battery is over discharged .....................................................................10
7 Compatible Inverter List .......................................................................................................................10
8 Common Issues and Solutions .............................................................................................................10
8.1 Alarm indicated on the BMU and solution........................................................................................................ 10
8.2 Alarm displayed on B-Plus L 2.5 and solution.................................................................................................. 11
8.3 Common issues displayed on inverter and solution...................................................................................... 13
9 Warranty .................................................................................................................................................13
Appendix 1: Minimum Configuration with Different Brands of Inverters ........................................14
1 Minimum configuration with SMA Sunny Island inverter ...............................................................................14
2 Minimum configuration with GOODWE inverter ...............................................................................................14
2.1 Minimum configuration with ES ....................................................................................................................... 14

2
2.2 Minimum configuration with BP....................................................................................................................... 15
2.3 Minimum configuration with EM......................................................................................................................15
2.4 Minimum configuration with SBP .................................................................................................................... 15
3 Minimum configuration with Victron inverter.....................................................................................................16
3.1 Minimum configuration with Multiplus .........................................................................................................16
3.2 Minimum configuration with Multigrid..........................................................................................................16
3.3 Minimum configuration with Quattro ............................................................................................................17
3.4 Minimum configuration with CCGX of Easysolar........................................................................................ 18
4 Minimum configuration with Sungrow inverter .................................................................................................18
4.1 Minimum configuration with SH5K .................................................................................................................18
5 Minimum configuration with Selectronic inverter .............................................................................................18
5.1 Minimum configuration with SP PRO .................................................................................................................18
6 Minimum configuration with Solis inverter..........................................................................................................19
Appendix 2: Common Failures Displayed on Inverter and Solution ..................................................20
1 Alarm code displayed on the SRC of SMA sunny island and solution .......................................................20
2 Alarm displayed on the APP of GOODWE and solution .................................................................................. 21
Contact Information .....................................................................................................................................

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1 General Information
1.1 Validity
This user manual applies to the Battery-Box Pro 2.5, Battery-Box Pro 5.0, Battery-Box Pro 7.5, and
Battery-Box Pro 10.0.
1.2 Application
This user manual introduces the Battery-Box product information, using guidance, safety,
common issues and actions.
The Battery-Box Pro 2.5-10.0 is an energy storage unit that can be used in ON-grid system or
Off-grid system for residential application.
The product is suitable for indoor use only.
1.3 Intended use
The Battery-Box is not suitable for supplying life-sustaining medical devices. A power outage must not
lead to personal injury.
Use this product only in accordance with the information provided in the enclosed documentation and
with the locally applicable standards and directives. Any other application may cause personal injury or
property damage.
The illustrations in this manual meant only to help explain system configuration concepts, includes
using guidance, safety caution and normal failure and actions.
Alterations to the product, e.g. changes or modifications, are only permitted with the express written
permission of BYD. Unauthorized alterations will void warranty claims. BYD shall not be held liable for
any damage caused by such changes. Any use of the product other than that described in the Intended
use section does not qualify as appropriate. The enclosed documentation is an integral part of this
product. Keep the documentation in a convenient place for future reference and observe all instructions
contained therein. The type label must be attached to the product.
Battery-Box Pro series products must work with compatible inverters which are listed in the
“compatible inverter list” in this manual.
1.4 Battery-Box and B-Plus L definition
BYD Battery-Box products Battery-Box Pro 2.5~ Battery-Box Pro 10.0 are defined as below:
Battery-Box : Battery Box
B-Plus L 2.5: Battery unit with 2.56kWh nominal capacity, which can be installed inside the
cabinet as an energy storage module.
Battery-Box Pro 2.5: Battery nominal capacity is 2.56 kWh (Includes 1pc B-Plus L 2.5)
Battery-Box Pro 5.0: Battery nominal capacity is 5.12 kWh (Includes 2pcs of B-Plus L 2.5)
Battery-Box Pro 7.5: Battery nominal capacity is 7.68 kWh (Includes 3pcs of B-Plus L 2.5)

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Battery-Box Pro 10.0: Battery nominal capacity is 10.24 kWh (Includes 4pcs of B-Plus L 2.5)
1.5 Identifying the Product
The Type Label describes the product identification, which is attached on the product.
The Type Label includes following information:
Product Name:
Product Type:
Nominal Capacity:
Nominal Voltage:
Max Current Discharge & Charge:
Ambient Temperature Range:
2 Safety
This section contains safety information that must be observed at all times when working on or with
batteries. To prevent personal injury or property damage and to ensure long-term operation of the
batteries, read this section carefully and observe all safety information at all times.
WARNING
Environmental requirement
Do not expose the battery to temperature above 50℃.
Do not place the battery near any heat sources.
Do not expose the battery to moisture or liquids.
Do not expose the battery to direct sunlight
Place battery in secure location away from children and animals.
Do not allow the battery power terminals to touch conductive objects such as wires.
Operation
Do not disassemble the battery.
Do not touch the battery pack with wet hands.
Do not crush, drop or puncture the battery.
Always dispose according to local safety regulations.
Store and recharge battery according to user manual strictly.
Ensure reliable grounding.
Do not reverse polarity
Do not short circuit the terminals, remove all jewelry items that could product a short circuit.
Disconnect battery from power and load, then power off battery before installation and
maintenance.
Do not stack up batteries without package.
The packed batteries are not allowed to be stacked up more than specified layers stipulated
on the package.

5
Continuous operation on a damaged battery can result in dangerous situation that may cause
severe injury due to electrical shock.
3 Technical Data
When Battery-Box works in different temperatures, the current of charge and discharge will be
adjusted automatically, battery will permit lower current when operating temperature gets
lower. Please refer to below table for the detail parameters setting:
Parameter setting of charging current in various temperatures
Operating temp. (℃)
Normal current(A)
-7~2
0.06C*N
2~12
0.17C*N
12~50
0.7C*N
Remark:
1. Effective time is 2mins when changing from one temperature range to another.
2. N=B-Plus L 2.5 battery quantity
Discharging current control with temperature
Operating temp.(℃)
Normal current(A)
-10~50
0.7~1C*N
Item
Battery-Box Pro
2.5
Battery-Box Pro
5.0
Battery-Box Pro
7.5
Battery-Box Pro
10.0
Battery Type
Lithium Iron phosphate battery
Battery module
B-Plus L 2.5
Usable battery
energy(kWh)(100% DOD, 0.5C
2.56
5.12
7.68
10.24
Max output power(kW)
2.56
5.12
7.68
10.24
charge &discharge at
@+25℃)(kWh)
2.56
5.12
7.68
10.24
Nominal voltage(V)
51.2
Operating Voltage Range(V)
43.2~56.5
Ambient Temperature
Range(℃)
-10~+50
Communication
RS485/CAN
Cabinet Net Dimension(W*D*H
mm)(Without ground feet)
600* 510* 883
Net Weight(Kg)
79
113
146
180
IP level
IP20

6
Remark:
1. N= B-Plus L 2.5 battery quantity
4 Technical Terms
No.
Term
Comment
1
Discharge
Battery output power for load
2
Charge
To put electricity into battery by charger
3
Full charged
Battery had been full charged, SOC is 100%.
4
Idle
Battery is on status of neither charge nor discharge and has not
been fully charged.
5
Shutdown mode
Power off
6
SOC
State of Charge
7
SW
Software
8
HW
Hardware
9
Battery voltage
The voltage between B+/B-
10
Pack voltage
The voltage between P+/P-
11
Cell voltage
Single cell voltage
12
Failure
Battery or BMS are broken, and unit needs to be replaced
13
Alarm
Battery will stop charging or discharging immediately
14
Protect
Battery stops charging or discharging (e.g. cell is overvoltage).
Operation can resume at a later stage.
15
Over discharged
Battery module or batteries overvoltage, need to be recharged
timely
5 Product Overview
5.1 Battery-Box System brief introduction
The Battery-Box energy storage system, combined with high-performance BYD lithium battery,
consists of cabinet, battery and BMU. Up to 4 battery modules can be installed in one cabinet
for use, and the usable energy can be extended easily from 2.5kWh to 80kWh by parallel
connection.

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Internal drawing
Structure dimension drawing
External drawing

8
5.2 Battery-Box configuration table
No.
Component
Name
Description
1
Cabinet
Battery-Box
Cabinet
The cabinet is used to accommodate the B-Plus L 2.5 L modules
and provide DC output (It can take max 4pcs B-Plus L 2.5)
2
Battery
B-Plus L 2.5
Battery module with 51.2V 50Ah, BYD’s P/N is: U3A1-50P-A.
3
BMU
BMU
Battery management unit. Provides communication with external
equipment.
5.3 General introduction of BMU
BMU is the battery management unit installed in the cabinet; its function is to manage the
battery’s charge and discharge, collect information from the battery and report to the
inverter.
Main functions:
 CAN / RS485 communication with inverter
 RS485 communicate with battery/BMS
 Other Communication interface for maintenance
 Charge and discharge management
5.4General introduction of B-Plus L 2.5
B-Plus L 2.5 is the commercial name of BYD’s U3A1-50P-A backup battery with 51.2V & 50Ah,
which is designed for energy storage applications. The B-Plus L 2.5 is an integrated battery
which consists of enclosure, BMS and cells.
B-Plus L 2.5 overview
Display and communication interface
⑩
8
7
P-: Negative terminal
P+: Positive terminal
GND: Grounding terminal

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①②③④ ⑤⑥⑦⑧⑨
Display and communication interface
No.
Interface
Mark
Function

SOC LED
SOC
Indicate current SOC of battery

RUN LED
RUN
Indicate that the B-plus L is in running status

ERR LED
ERR ADDR
Indicate error status

ALM LED
Alarm
Indicate alarm status

RJ45 terminal
RS485
Communication ports

Address
ADDR
Address needs to be set, if they are connected in parallel.

Alarm relay
output
1.2.3.4
N/A

Test terminal
B- B+
Measure battery voltage when testing.

ON/OFF
ON/OFF
Power on/power off manually
5.5 Operating environment
Operating environment parameters
No.
Item
Min.
Typical
Max.
Unit
Remark
1
Discharging
temperature
-10
25
50
℃
2
Charging
temperature
-10
25
50
℃
3
Relative humidity
5
95
%
4
Absolute humidity
0.26
25
g/m3
5
Elevation
-
2000
-
m
6
Enclosure
IP20
6 Cleaning and Maintenance
6.1 Cleaning
The Battery -Box system is recommended to be cleaned periodically. If the enclosure is dirty,
please use a soft，dry brush or a soot blower to remove the dust. Liquids such as solvents,

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abrasives or corrosive liquids are not allowed to clean the enclosure.
6.2 Maintenance
6.2.1 Recharge requirement for normal storage
Batteries should be stored in position with the temperature range of -10℃～+45℃, and
maintained regularly according to the following table with 0.5C (25A) current for 1 hour after
a long time of storage.
Recharge conditions when in storage
Storage environment
temperature
Relative humidity of storage
environment
Storage
time
SOC
Below -10℃
/
Avoid
/
-10~25℃
5%~70%
≤12 months
30%≤SOC≤60%
25~35℃
5%~70%
≤6months
30%≤SOC≤60%
35~45℃
5%~70%
≤3months
30%≤SOC≤60%
Above 45℃
/
Avoid
/
6.2.2 Recharge requirement when battery is over discharged
Please recharge the over discharged batteries in time as per the following table, otherwise
the over discharged ones will be damaged.
Recharge condition when battery is over discharged
Storage environment temperature
Storage time
-10~25℃
≤15 days
25~45℃
≤7 days
7 Compatible Inverter List
To make sure that the system can be operated normally, please use BYD compatible inverters
and select battery quantity correctly, according to the “Battery-Box configuration list with
different inverter” in Appendix 1 in this user manual.
8 Common Issues and Solutions
8.1 Alarm indicated on the BMU and solution
BMU LED flash
Possible cause
Solution
Flash 1 time
Inverter and BMU
communication failure
Step1. Check whether the CAN communication cable has
been connected correctly and tightly；
Step2. If the connection is incorrect, please reconnect the
cable correctly; if the connection is correct and reliable,
then replace the BMU；
Flash 2 times
Battery not found
Check the connection between BMU and first battery.

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Flash 3 times
One or some batteries
are disconnected
1. Check RS485 cable and battery address
2. If the connection and the address are correct, please
contact the after service provider
Flash 4 times
Any battery failure
Check battery led status. If the red led is on and buzzer
alarms, please contact the after service provider to replace
the battery.
8.2 Alarm displayed on B-Plus L 2.5 and solution
Alarm indicated by flashing LED
Info B-Plus L displayed
Flash
Possible cause
Solution
Only yellow led is ON
0.5Hz
Battery was powered
off abnormally;
Press ON/OFF button for 2-3 seconds
to restart the battery, If the battery
cannot be recovered, contact the
after service provider immediately;
Flow led flashes and
alternates with capacity
led
10s per
cycle
Communication
connection timeout
Step1.Check the communication
wire/cable
Step2.Check battery address
NO.1/3 led and No.2/4
led flashing alternately
/
Update status
If the firmware is not updated, then
reset the battery.
Alarm indicated by flashing yellow led
Fault phenomenon
Times
Possible causes
Solution
1.Yellow led (Alarm) is
always on
2 Press on/off button for
1S and release, then
buzzer sounds shortly;
3. The green Led (RUN) is
always on, and yellow led
(ALM) flashing, which
indicates alarm status.
1time
Under voltage (BAT or
CELL)
Contact the after service provider
2times
Over charge
Contact the after service provider
3times
Low temperature
charge over-current
Contact the after service provider
4times
Charge short circuit
Contact the after service provider
5times
Discharge short circuit
Contact the after service provider
6times
Parallel short circuit
Contact the after service provider
7times
Discharge over-
current protection
Contact the after service provider
8times
High temperature
protection
Contact the after service provider

12
9times
Low temperature
protection
Contact the after service provider
10times
PACK over voltage
protection
Contact the after service provider
Alarm indicated by flashing red led
Fault phenomenon
Times
Possible causes
Solution
1.Red led (Err) is always
on
2. Press the on/off
button press the for1S
and released, then
buzzer sounds shortly
1time
Voltage sensor failure
Replace the battery
3. Green led (RUN) is
always on, and red led
(ERR) is flashing, which
shows the alarm status.
2times
Temperature sensor
failure
Replace the battery
3times
Charging circuit failure
Replace the battery
4times
Discharge circuit
failure
Replace the battery
5times
Batteries failure
Replace the battery
6times
Communication
failure
Replace the battery
Info displayed on B-Plus L
Fault phenomenon
Times
Possible cause
Solution
The buzzer sounds with
different times at a 15
seconds interval.
4times
Reverse 、short circuit
1.Power off;
2.Inspect short/reverse connection of
cable between P+&P-;
3.If short/reverse connection is
confirmed, please reconnect cable
correctly;
4.Restart battery;
3times
Batteries failure
Replace the battery

13
2times
Voltage sensor
failure、Temperature
sensor failure
Replace the battery
1time
Charging/Discharge
circuit failure
Replace the battery
8.3 Common issues displayed on inverter and solution
User also can check the battery’s running, warning and alarm information from App or LED display of
inverter, detail information please refer to Appendix 2 in this user manual.
8.4 Emergency
Please cut off the power supply and turn off the battery in emergency.
9 Warranty
BYD provides warranty when the product is installed and used according to the description of user
manual / installation manual / warranty letter.
1. Please contact our local service provider for technical support & after service.
2. Please download the Warranty Letter via following website:
Australia customer: www.alpspower.com.au
European customer: www.eft-systems.de

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Appendix 1: Minimum Configuration with
Different Brands of Inverters
1 Minimum configuration with SMA Sunny Island inverter
Inverter Firmware version: minimum required firmware version for SI is V1.73.
Battery-Box firmware version: minimum required firmware version for BMU is V2.7.
Shall bypass main circuit breaker when the system is off grid application.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
SI 3.0M
≥1
≥1
SI 4.4M
≥1
≥1
SI 6.0H
≥1
≥1
SI 8.0H
≥1
≥1
3 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
SI 3.0M
≥3
≥1
SI 4.4M
≥4
≥1
SI 6.0H
≥4
≥1
SI 8.0H
≥4
≥1
1 Phase off Grid
1
Inverter Type
B-Plus L 2.5
Cabinet
SI 3.0M
≥3
≥1
SI 4.4M
≥3
≥1
SI 6.0H
≥5
≥2
SI 8.0H
≥5
≥2
3 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
SI 3.0M
≥8
≥2
SI 4.4M
≥8
≥2
SI 6.0H
≥12
≥3
SI 8.0H
≥12
≥3
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
2 Minimum configuration with GOODWE inverter
2.1 Minimum configuration with ES
Inverter Firmware version: minimum required firmware version for ARM is 03.
1
Shall bypass main circuit breaker when the system is off grid application.

15
Battery-Box firmware version: minimum required firmware version for BMU is V4-10.
Shall bypass main circuit breaker when the system is off grid application.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
GW3648D-ES
≥1
2
≥1
GW5048D-ES
≥1
2
≥1
1 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
GW3648D-ES
≥2
≥1
GW5048D-ES
≥2
≥1
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
2.2 Minimum configuration with BP
Inverter Firmware version: minimum required firmware version for ARM is 03.
Battery-Box firmware version: minimum required firmware version for BMU is V4-10.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
GW2500-BP
≥1
≥1
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
2.3 Minimum configuration with EM
Inverter Firmware version: minimum required firmware version for ARM is 03.
Battery-Box firmware version: minimum required firmware version for BMU is V4-10.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
GW3048-EM
≥1
2
≥1
GW3648-EM
≥1
2
≥1
GW5048-EM
≥1
2
≥1
1 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
GW3048-EM
≥2
≥1
GW3648-EM
≥2
≥1
GW5048-EM
≥2
≥1
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
2.4 Minimum configuration with SBP
Inverter Firmware version: minimum required firmware version for ARM is 03.
Battery-Box firmware version: minimum required firmware version for BMU is V4-10
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
2
This configuration is only for self-consumption application

16
GW3600S-BP
≥1
2
≥1
GW5000S-BP
≥1
2
≥1
Back-up mode
Inverter Type
B-Plus L 2.5
Cabinet
GW3600S-BP
≥2
≥1
GW5000S-BP
≥2
≥1
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
3 Minimum configuration with Victron inverter
3.1 Minimum configuration with Multiplus
Inverter Firmware version: minimum required firmware version for CCGX is V2.01, which
applies to ESS mode.
Battery-Box firmware version: minimum required firmware version for BMU is V4-17, which
applies to ESS mode.
Shall bypass main circuit breaker when the system is off grid application.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥1
≥1
48/5000/70
≥1
≥1
3 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥3
≥1
48/5000/70
≥3
≥1
1 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥2
≥1
48/5000/70
≥3
≥1
3 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥6
≥2
48/5000/70
≥9
≥3
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
3.2 Minimum configuration with Multigrid
Inverter Firmware version: minimum required firmware version for CCGX is V2.01, which
applies to ESS mode.
Battery-Box firmware version: minimum required firmware version for BMU is V4-13, which
applies to ESS mode.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥1
≥1

17
3 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥3
≥1
1 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥2
≥1
3 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35
≥6
≥2
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
3.3 Minimum configuration with Quattro
Inverter Firmware version: minimum required firmware version for CCGX is V2.01, which
applies to ESS mode.
Battery- Box firmware version: minimum required firmware version for BMU is V4-13, which
applies to ESS mode.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinets
48/5000/70-100/100
≥1
≥1
48/8000/110-100/100
≥1
≥1
48/10000/140- 100/100
≥1
≥1
48/15000/200- 100/100
≥1
≥1
3 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/5000/70-100/100
≥3
≥1
48/8000/110-100/100
≥4
≥1
48/10000/140- 100/100
≥5
≥2
48/15000/200- 100/100
≥6
≥2
1 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/5000/70-100/100
≥3
≥1
48/8000/110-100/100
≥5
≥2
48/10000/140- 100/100
≥6
≥2
48/15000/200- 100/100
≥9
≥3
3 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/5000/70-100/100
≥9
≥3
48/8000/110-100/100
≥15
≥4
48/10000/140- 100/100
≥18
≥5
48/15000/200- 100/100
≥27
≥7
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.

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3.4 Minimum configuration with CCGX of Easysolar
Inverter Firmware version: minimum required firmware version for CCGX is V2.01, which
applies to ESS mode.
Battery-Box firmware version: minimum required firmware version for BMU is V4-13, which
applies to ESS mode.
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35-50 MPPT150/70
≥1
≥1
48/5000/70-100 MPPT150/100
≥1
≥1
3 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35-50 MPPT150/70
≥3
≥1
48/5000/70-100 MPPT150/100
≥3
≥1
1 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35-50 MPPT150/70
≥2
≥1
48/5000/70-100 MPPT150/100
≥3
≥1
3 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
48/3000/35-50 MPPT150/70
≥6
≥2
48/5000/70-100 MPPT150/100
≥9
≥3
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
4 Minimum configuration with Sungrow inverter
4.1 Minimum configuration with SH5K
Inverter Firmware version: minimum required firmware version is V13.
Battery-Box firmware version: minimum required firmware version for BMU is V4-10.
Identification label on package is V1.2
1 Phase on Grid
Inverter Type
B-Plus L 2.5
Cabinet
SH5K
≥2
≥1
1 Phase off Grid
Inverter Type
B-Plus L 2.5
Cabinet
SH5K
≥2
≥1
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.
5 Minimum configuration with Selectronic inverter
5.1 Minimum configuration with SP PRO
Inverter Firmware version: minimum required firmware version is V0.27.
Battery-Box firmware version: minimum required firmware version for BMU is V4-10.

19
Identification label on Battery-Box cabinet package: V2.2
1 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
SPMC481-AU
≥2
≥1
SPMC482-AU
≥2
≥1
1 Phase off Grid
Inverter Type
B-Plus 2.5
Cabinet
SPMC481-AU
≥5
≥2
SPMC482-AU
≥6
≥2
Remark: Maximum quantity of B-Plus is 32, Cabinet quantity is 8.
6 Minimum configuration with Solis inverter
Inverter Firmware version: minimum required firmware version is 11000F.
Battery-Box firmware version: minimum required firmware version for BMU is V4-22.
Shall bypass main circuit breaker when the system is off grid application.
1 Phase on grid
Inverter Type
B-Plus 2.5
Cabinet
RHI-3K-48ES
≥1
≥1
RHI-3.6K-48ES
≥1
≥1
RHI-4.6K-48ES
≥1
≥1
RHI-5K-48ES
≥1
≥1
1 Phase off grid
Inverter Type
B-Plus 2.5
Cabinet
RHI-3K-48ES
≥2
≥1
RHI-3.6K-48ES
≥2
≥1
RHI-4.6K-48ES
≥2
≥1
RHI-5K-48ES
≥2
≥1
Remark: Maximum quantity of B-Plus L is 32, Cabinet quantity is 8.