BYD B-Box Res 2.5 User manual

B-Box Res 2.5~10.0
User Manual
Rev. 1.0
Feb.2018
Copyright © BYD Lithium Battery Company Limited. All rights reversed.

Battery-Box LV User Manual
Page 1
C ONTENTS
1 General Information ................................................................................................................ 3
1.1 Validity....................................................................................................................................3
1.2 Application..............................................................................................................................3
1.3 Intended use...........................................................................................................................3
1.4 B-Box and B-Plus definition ...................................................................................................3
1.5 Identifying the product............................................................................................................4
2 Safety ........................................................................................................................................... 4
3 Technical Data .......................................................................................................................... 5
4 Technical Term ......................................................................................................................... 6
5 Product Overview .................................................................................................................... 6
5.1 Brief introduction ....................................................................................................................6
5.2 B-Box configuration table.......................................................................................................7
5.3 General introduction of BMU..................................................................................................7
5.4 General introduction of B-Plus 2.5.........................................................................................7
5.5 Operating environment...........................................................................................................8
6 Cleaning and Maintenance ................................................................................................... 9
6.1 Cleaning.................................................................................................................................9
6.2 Maintenance...........................................................................................................................9
6.2.1 Recharge requirement......................................................................................................9
6.2.2 Recharge requirement when battery is over discharged..................................................9
7 Compatible Inverter List ........................................................................................................ 9
8 Common Issues and Solutions .......................................................................................... 10
8.1Alarm indicated on the BMU and the solution.......................................................................10
8.2 Alarm displayed on B-Plus 2.5 and the solution ..................................................................10
8.3 Common issues displayed on inverter and the solution ......................................................12
9 Warranty .................................................................................................................................. 12
10 Registration .......................................................................................................................... 12
Appendix 1: Minimum Configuration with Different Brands of Inverters .................. 14
1Minimum configuration with SMA Sunny Island inverter..........................................................14
2 Minimum configuration with GOODWE inverter......................................................................14
2.1 Minimum configuration with ES.........................................................................................14
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 Solax...........................................................................................18
4.1 Minimum configuration with SK-SU...................................................................................18

Battery-Box LV User Manual
Page 2
4.2 Minimum configuration with SK-TL....................................................................................18
5 Minimum configuration with Sungrow .....................................................................................19
5.1 Minimum configuration with SH5K ....................................................................................19
Appendix 2: Common Issues Displayed on Inverter and Solutions....................................... 20
1 Alarm code displayed on the SRC of SMA sunny island and solution....................................20
2 Alarm displayed on the APP of GOODWE and the solution...................................................21
3 Alarm displayed on the screen of Solax and the solution.......................................................21

Battery-Box LV User Manual
Page 3
1 General Information
1.1 Validity
This user manual is applied for the B-Box Res 2.5, B-Box Res 5.0, B-Box Res 7.5, and B-Box Res
10.0.
1.2 Application
This user manual introduces the B-Box product information, using guidance, safety, common
issues and actions.
The B-Box Res 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 B-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.
B-Box Res series products must work with compatible inverters which are listed in the “compatible
inverter list” in this manual.
1.4 B-Box and B-Plus definition
B-Box: Abbreviation of battery box
B-Plus 2.5: battery unit with 2.56kWh nominal capacity, which can be installed inside the cabinet
as an energy storage module.
B-Box Res 2.5: Battery nominal capacity is 2.56kWh (Includes 1pc B-Plus 2.5)
B-Box Res 5.0: Battery nominal capacity is 5.12kWh (Includes 2pcs of B-Plus 2.5)
B-Box Res 7.5: Battery nominal capacity is 7.68 kWh (Includes 3pcs of B-Plus 2.5)
B-Box Res 10.0: Battery nominal capacity is 10.24kWh (Includes 4pcs of B-Plus 2.5)

Battery-Box LV User Manual
Page 4
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:
2SAFETY
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 for extended periods of time
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 caution
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.
Continuous operation on a damaged battery can result in dangerous situation that may cause
severe injury due to electrical shock.

Battery-Box LV User Manual
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3 Technical Data
When B-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 charge current in various temperatures
Protect temp. /Resume temp. (℃)
Normal current(A)
-7~2
0.06C*N
2~12
0.12C*N
12~50
0.7C*N
Remark:
1. It will take 2 minutes for the charge current adjustment.
2. N= Quantity of B-Plus 2.5 battery
Discharge current control under different temperatures?
Protect temp. / Resume temp.(℃)
Normal current(A)
-10~50
0.7~1C*N
Remark:
1.N= Quantity of B-Plus 2.5 battery
B-Box Res 2.5
B-Box Res 5.0
B-Box Res 7.5
B-Box Res 10.0
Battery Type
Lithium Iron phosphate battery
Battery module
B-Plus 2.5
Max Output power(kW)
2.5
5.0
7.5
10.0
Usable battery energy(kWh)(0.2C
charge &discharge @+25℃)(kWh)
2.56
5.12
7.68
10.24
Nominal voltage(V)
51.2
Operating Voltage Range(V)
43.2~56.4
Operating Temperature Range[℃]
-10~+50
Communication
RS485/CAN
Cabinet Net Dimension(W*D*H
mm)(Without ground feet)
620* 335* 1650
Net Weight(Kg)
103
137
171
205
Enclosure Protection
IP55

Battery-Box LV User Manual
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4 Technical Term
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
Ready for charging and discharging
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, need to be replaced
13
Alarm
indicate that the battery is in abnormal status
14
Protect
Battery stops charging or discharging and is recoverable.
15
Over discharged
Battery is lack voltage, and needs to be recharged in time.
5 Product Overview
5.1 Brief introduction
The B-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.

Battery-Box LV User Manual
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External drawing Internal drawing
5.2 B-Box configuration table
No.
Component
Name
Description
1
Cabinet
B-Box Cabinet
The Cabinet, inside which B-Plus 2.5 can be installed, provides DC power
and each cabinet can hold up to 4 pcs of B-Plus.
2
Battery
B-Plus2.5
Battery module with 51.2V50Ah, BYD’s P/N is: U3A1-50P-A.
3
BMU
BMU
Battery management unit, communicates with external equipment.
5.3 General introduction of BMU
BMU installed inside cabinet, is battery management unit. The function is to manage the battery’s
charge and discharge, and collect information from battery and report to inverter.
Functions of BMU:
CAN /RS485 communicate with inverter
RS485 communicate with battery/BMS
Dry contact terminal
Other Communication interface for maintenance
Charge and discharge management
5.4 General introduction of B-Plus 2.5

Battery-Box LV User Manual
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B-Plus 2.5 is the commercial name of BYD U3A1-50P-A backup battery with 51.2V& 50Ah, which
is designed for energy storage application. B-Plus 2.5 is an integrated battery which consists of
enclosure, BMS and cells.
B-Plus 2.5 Drawing
①②③④⑤⑥⑦⑧⑨
Display and communication interface
No.
Interface
Mark
Function

SOC LED
SOC
Indicate current SOC of battery

RUN LED
RUN
Indicate that the B-plus 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
⑩
8
7
P-: Positive terminal
P+: Negative terminal
GND: Grounding terminal

Battery-Box LV User Manual
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5
Elevation
-
2000
-
M
6
Enclosure
IP55
6 Cleaning and Maintenance
6.1 Cleaning
The B-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,
abrasives or corrosive liquids are not allowed to clean the enclosure.
6.2 Maintenance
6.2.1 Recharge requirement
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℃
/
prohibit
/
-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℃
/
prohibit
/
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
-20~25℃
≤15 days
25~45℃
≤7 days
7 Compatible Inverter List

Battery-Box LV User Manual
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To make sure that the system can be operated normally, please use BYD compatible
inverters and select battery quantity correctly, according to the “B-Box configuration list
with different inverter” in Appendix 1 in this user manual.
8 Common Issues and Solutions
8.1Alarm indicated on the BMU and the solution
LED of the BMU
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.
Flash 3 times
Any of 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 of battery failures
Check battery led status. If the red led is on
and buzzer alarms, please contact your
after service provider to replace the battery.
8.2 Alarm displayed on B-Plus 2.5 and the solution
Alarm indicated by flashing LED
Info B-Plus 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 statue status
If the firmware is not updated,
then reset the battery.
Alarm indicted by flashing yellow Led

Battery-Box LV User Manual
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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) is 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
9times
Low temperature
protection
Contact the after service
provider
10times
PACK over voltage
protection
Contact the after service
provider
Alarm indicted by flashing red Led
1.Red led (Err) is always on
2. Press the on/off button
for1S and release, then
buzzer sounds shortly
1time
Voltage sensor failure
Change the battery
3. Green led (RUN) is always
on, and red led (ERR) is
flashing
2times
Temperature sensor
failure
Change the battery
3times
Charging circuit failure
Change the battery
4times
Discharge circuit failure
Change the battery
5times
Batteries failure
Change the battery
6times
536 communication failure
Change the battery

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Problems indicated by buzzer
Info displayed on B-Plus
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
Change the battery
2times
Voltage sensor failure、
Temperature sensor
failure
Change the battery
1time
Charging/Discharge circuit
failure
Change the battery
8.3 Common issues displayed on inverter and the 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 installation company, if you have any technical problems or
inquiries for usage,
2. Please contact after service provider if you have any after service requirements.
3. Please download the Warranty Letter via BYD official website.
10 Registration
Please register
1
your B-Box information in our after service website within 3 months since
the installation date.
1
BYD will not ask for your personal information unless we truly need it, and we only disclose personally information to those of its
employees, or affiliated organizations that need to know that information in order to process it on behalf of BYD, or to provide timely
services.

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The following information is required for timely customer service.
2
Serial Number of Battery- Box Cabinet
3
Serial Number of B-Plus
4
Serial Number of BMS
5
Installation Date
6
Invoice Number
If you have any questions during the usage please contact our local contacts

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A PPENDIX 1: MINIMUM CONFIGURATION WITH
DIFFERENT BRANDS OF INVERTERS
1Minimum configuration with SMA Sunny Island inverter
Inverter Firmware version: minimum required firmware version for SI is V1.73.
B-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 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 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
2
Inverter Type
B-Plus 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
1
Inverter Type
B-Plus 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 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.
B-Box firmware version: minimum required firmware version for BMU is V4-10.
Shall bypass main circuit breaker when the system is off grid application.
2
Shall bypass main circuit breaker when the system is off grid application.

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1 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
GW3648D-ES
≥1
2
≥1
GW5048D-ES
≥1
2
≥1
1 Phase off Grid
Inverter Type
B-Plus 2.5
Cabinet
GW3648D-ES
≥2
≥1
GW5048D-ES
≥2
≥1
Remark: Maximum quantity of B-Plus is 32, Cabinet quantity is 8.
2.2 Minimum configuration with BP
Inverter Firmware version: minimum required firmware version for ARM is 03.
B-Box firmware version: minimum required firmware version for BMU is V4-10.
1 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
GW2500-BP
≥1
≥1
Remark: Maximum quantity of B-Plus is 32, Cabinet quantity is 8.
2.3 Minimum configuration with EM
Inverter Firmware version: minimum required firmware version for ARM is 03.
B-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 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 2.5
Cabinet
GW3048-EM
≥2
≥1
GW3648-EM
≥2
≥1
GW5048-EM
≥2
≥1
Remark: Maximum quantity of B-Plus is 32, Cabinet quantity is 8.
2.4 Minimum configuration with SBP
Inverter Firmware version: minimum required firmware version for ARM is 03.
B-Box firmware version: minimum required firmware version for BMU is V4-10
1 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
GW3600S-BP
≥1
2
≥1
GW5000S-BP
≥1
2
≥1
Back-up mode

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Inverter Type
B-Plus 2.5
Cabinet
GW3600S-BP
≥2
≥1
GW5000S-BP
≥2
≥1
Remark: Maximum quantity of B-Plus 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.
B-Box firmware version: minimum required firmware version for BMU is V4-13, 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 2.5
Cabinet
48/3000/35
≥1
≥1
48/5000/70
≥1
≥1
3 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
48/3000/35
≥3
≥1
48/5000/70
≥3
≥1
1 Phase off Grid
1
Inverter Type
B-Plus 2.5
Cabinet
48/3000/35
≥2
≥1
48/5000/70
≥3
≥1
3 Phase off Grid1
Inverter Type
B-Plus 2.5
Cabinet
48/3000/35
≥6
≥2
48/5000/70
≥9
≥3
Remark: Maximum quantity of B-Plus 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.
B-Box firmware version: minimum required firmware version for BMU is V4-13, 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 2.5
Cabinet
48/3000/35
≥1
≥1
3 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
48/3000/35
≥3
≥1

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1 Phase off Grid
3&1
Inverter Type
B-Plus 2.5
Cabinet
48/3000/35
≥2
≥1
3 Phase off Grid3&1
Inverter Type
B-Plus 2.5
Cabinet
48/3000/35
≥6
≥2
Remark: Maximum quantity of B-Plus 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.
B-Box firmware version: minimum required firmware version for BMU is V4-13, 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 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 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 on Grid
3&1
Inverter Type
B-Plus 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 Grid3&1
Inverter Type
B-Plus 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 is 32, Cabinet quantity is 8.
3
When system works in off grid mode, please bypass the main circuit breaker when installation, and operate according to Victron’s
guidance before new firmware is released. Website:https://www.victronenergy.com/live/battery_compatibility:byd_Battery- Box

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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.
B-Box firmware version: minimum required firmware version for BMU is V4-13, 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 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 2.5
Cabinet
48/3000/35-50 MPPT150/70
≥3
≥1
48/5000/70-100 MPPT150/100
≥3
≥1
1 Phase off Grid
3&1
Inverter Type
B-Plus 2.5
Cabinet
48/3000/35-50 MPPT150/70
≥2
≥1
48/5000/70-100 MPPT150/100
≥3
≥1
3 Phase off Grid3&1
Inverter Type
B-Plus 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 is 32, Cabinet quantity is 8.
4 Minimum configuration with Solax
4.1 Minimum configuration with SK-SU
Inverter Firmware version: minimum required firmware version is V2.31.
B-Box firmware version: minimum required firmware version for BMU is V4-10.
1 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
SK-SU 3000E
≥2
≥1
SK-SU 3700E
≥2
≥1
SK-SU 5000E
≥2
≥1
4.2 Minimum configuration with SK-TL
1 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
SK-TL3000E+SK-BMU2500
≥2
≥1
SK-TL3700E+SK-BMU2500
≥2
≥1
SK-TL5000E+SK-BMU2500
≥2
≥1
SK-TL5000E+SK-BMU5000
≥4
≥1
Remark: Maximum quantity of B-Plus is 32, Cabinet quantity is 8.

Battery-Box LV User Manual
Page 19
5 Minimum configuration with Sungrow
5.1 Minimum configuration with SH5K
Inverter Firmware version: minimum required firmware version is V13.
B-Box firmware version: minimum required firmware version for BMU is V4-10.
Identification label on package is V1.2
Shall bypass main circuit breaker when the system is off grid application.
1 Phase on Grid
Inverter Type
B-Plus 2.5
Cabinet
SH5K
≥2
≥1
1 Phase off Grid
3&1
Inverter Type
B-Plus 2.5
Cabinet
SH5K
≥2
≥1
Remark: Maximum quantity of B-Plus is 8, Cabinet quantity is 8.
6 Minimum configuration with Selectronics
6.1 Minimum configuration with SP PRO
Inverter Firmware version: minimum required firmware version is V0.27.
B-Box firmware version: minimum required firmware version for BMU is V4-10.
Identification label on B-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 Grid1&2
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.