SMA Home Storage HS-BM-3.28-10 User manual

Operating Manual
SMA Home Storage
HS-BM-3.28-10
HS-BM-3.28-10-BE-en-10 | Version 1.0ENGLISH

Legal Provisions SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-102
Legal Provisions
The information contained in these documents is the property of SMA Solar Technology AG. No part of this document
may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic,
mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA Solar Technology AG.
Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not
require prior approval.
SMA Solar Technology AG makes no representations or warranties, express or implied, with respect to this
documentation or any of the equipment and/or software 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 SMA Solar Technology AG 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 attempt has been made to make this document complete,
accurate and up-to-date. Readers are cautioned, however, that product improvements and field usage experience may
cause SMA Solar Technology AG to make changes to these specifications without advance notice or per contract
provisions. SMA Solar Technology AG shall not be responsible for any damages, including indirect, incidental or
consequential damages, caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a
product or brand is not a registered trademark.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
E-mail: [email protected]
Status: 10/10/2023
Copyright © 2023 SMA Solar Technology AG. All rights reserved.

Table of contents
SMA Solar Technology AG
Operating Manual 3HS-BM-3.28-10-BE-en-10
Table of contents
1 Information on this Document..................................................................................................... 6
1.1 Validity.............................................................................................................................................................. 6
1.2 Target Group ................................................................................................................................................... 6
1.3 Content and Structure of this Document......................................................................................................... 6
1.4 Levels of Warning Messages.......................................................................................................................... 6
1.5 Symbols in the Document................................................................................................................................ 7
1.6 Typographies in the document........................................................................................................................ 7
1.7 Designations in the Document......................................................................................................................... 7
1.8 Additional Information..................................................................................................................................... 7
2 Safety ............................................................................................................................................ 9
2.1 Intended Use.................................................................................................................................................... 9
2.2 Important Safety Information .......................................................................................................................... 9
3 Scope of Delivery......................................................................................................................... 14
3.1 Scope of delivery of battery modules ............................................................................................................ 14
3.2 Scope of delivery of base ............................................................................................................................... 15
4 Product Overview........................................................................................................................ 16
4.1 System Overview............................................................................................................................................. 16
4.2 Product Description.......................................................................................................................................... 17
4.3 Symbols on the Product................................................................................................................................... 17
4.4 Interfaces and Functions.................................................................................................................................. 19
4.4.1 RJ45 connection.............................................................................................................................................. 19
4.4.2 User Interface .................................................................................................................................................. 19
4.4.3 Increased self-consumption............................................................................................................................. 19
4.4.4 Black start ........................................................................................................................................................ 19
4.5 LED signals of the battery modules................................................................................................................. 19
4.6 Battery Management....................................................................................................................................... 20
4.7 Modular extension of the battery modules .................................................................................................... 21
5 Transport....................................................................................................................................... 22
6 Mounting ...................................................................................................................................... 23
6.1 Requirements for Mounting............................................................................................................................. 23
6.1.1 Requirements for the installation site of the battery modules........................................................................ 23
6.1.2 Permitted and prohibited mounting positions of the battery modules.......................................................... 23
6.1.3 Recommended clearances ............................................................................................................................. 23
6.2 Wall Mounting................................................................................................................................................. 24
6.2.1 Wall mounting variants................................................................................................................................... 24
6.2.2 Dimensions for wall mounting ........................................................................................................................ 25
6.2.3 Mount the battery modules with wall mounting bracket............................................................................... 25
6.3 Mounting with base......................................................................................................................................... 28
6.3.1 Mounting variants when mounting with base................................................................................................ 28
6.3.2 Dimensions for mounting with base ............................................................................................................... 29
6.3.3 Mounting the battery modules with base ...................................................................................................... 29
6.4 Back-to-back .................................................................................................................................................... 32
6.4.1 Mounting variants of the back-to-back .......................................................................................................... 32
6.4.2 Mounting dimensions for the back-to-back.................................................................................................... 32
6.4.3 Mounting back-to-back ................................................................................................................................... 33
7 Electrical Connection.................................................................................................................... 35

Table of contents SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-104
7.1 Overview of the Connection Area.................................................................................................................. 35
7.2 Wiring overview with hybrid inverter ............................................................................................................. 36
7.3 Requirements for the electrical connection..................................................................................................... 36
7.3.1 Grounding cable requirements ...................................................................................................................... 36
7.3.2 DC cable requirements ................................................................................................................................... 36
7.3.3 Battery data cable requirements .................................................................................................................... 37
7.4 Electrical Connection Procedure..................................................................................................................... 37
7.5 Connecting the Grounding ............................................................................................................................. 37
7.6 Connecting the battery data cable between the battery modules ............................................................... 38
7.7 Connection overview of the battery communication with the inverter.......................................................... 40
7.8 Connecting the battery communication system to the inverter...................................................................... 41
7.9 Connecting the DC Cables ............................................................................................................................. 42
8 Commissioning ............................................................................................................................. 44
8.1 Commissioning Procedure............................................................................................................................... 44
8.2 Checking the Mounting and Connection Work............................................................................................. 44
8.3 Example of the user interface of an inverter .................................................................................................. 45
8.4 Commissioning the battery modules............................................................................................................... 46
8.5 Checking the configuration of the battery modules in the installation assistant........................................... 47
9 Disconnecting the battery modules from voltage sources ....................................................... 49
10 Performing cleaning and maintenance...................................................................................... 50
11 Troubleshooting ........................................................................................................................... 51
11.1 Options for troubleshooting ............................................................................................................................ 51
11.2 Event messages on the user interface of the inverter..................................................................................... 51
11.3 Error with LED display only ............................................................................................................................. 54
11.4 External appearance of the battery module.................................................................................................. 55
12 Decommissioning the battery modules...................................................................................... 56
13 Storage ......................................................................................................................................... 57
14 Disposal ........................................................................................................................................ 58
14.1 Critical and non-critical battery modules........................................................................................................ 58
14.2 Regional providers for the disposal of batteries ............................................................................................ 58
14.3 Specifications for Battery Disposal ................................................................................................................. 58
14.4 Reporting damaged battery............................................................................................................................ 59
14.5 Disposing of the Battery .................................................................................................................................. 59
15 Procedure for Receiving a Replacement Device ....................................................................... 60
16 Technical Data.............................................................................................................................. 61
16.1 General Data................................................................................................................................................... 61
16.2 Equipment......................................................................................................................................................... 61
16.3 DC connection ................................................................................................................................................. 62
16.4 Efficiency .......................................................................................................................................................... 62
16.5 Protective Devices............................................................................................................................................ 62
16.6 Climatic Conditions.......................................................................................................................................... 62
17 Accessories ................................................................................................................................... 63
18 EU Declaration of Conformity..................................................................................................... 64

Table of contents
SMA Solar Technology AG
Operating Manual 5HS-BM-3.28-10-BE-en-10
19 UK Declaration of Conformity .................................................................................................... 65
20 Contact.......................................................................................................................................... 66

1 Information on this Document SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-106
1 Information on this Document
1.1 Validity
This document is valid for:
• HS-BM-3.28-10 (SMA Home Storage 3.2)
• HS-BU-10 (SMA Home Storage Base Unit)
1.2 Target Group
This document is intended for qualified persons and end users. Only qualified persons are allowed to perform the
activities marked in this document with a warning symbol and the caption "Qualifiedperson". Tasks that do not require
any particular qualification are not marked and can also be performed by end users. Qualified persons must have the
following skills:
• Knowledge of how an inverter works and is operated
• Knowledge of how batteries work and are operated
• Training in how to deal with the dangers and risks associated with installing, repairing and using electrical
devices, batteries and installations
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable laws, regulations, standards, and directives
• Knowledge of and compliance with this document and all safety information
• Knowledge of and compliance with the documents of the battery manufacturer with all safety information
1.3 Content and Structure of this Document
This document describes the mounting, installation, commissioning, configuration, operation, troubleshooting and
decommissioning of the product.
The latest version of this document and additional information about the product can be found in PDF format and as an
eManual at www.SMA-Solar.com. You can also call up the eManual via the user interface of the product.
Illustrations in this document are reduced to the essential information and may deviate from the real product.
1.4 Levels of Warning Messages
The following levels of warning messages may occur when handling the product.
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.
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.

1 Information on this Document
SMA Solar Technology AG
Operating Manual 7HS-BM-3.28-10-BE-en-10
1.5 Symbols in the Document
Icon Explanation
Information that is important for a specific topic or goal, but is not safety-relevant
☐
Indicates a requirement for meeting a specific goal
☑
Required result
Example
Sections describing activities to be performed by qualified persons only
1.6 Typographies in the document
Typography Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated conductors
to the terminals X703:1 to
X703:6.
• Enter the value 10 in the field
Minutes.
>• Connects several elements to be
selected
• Select Settings > Date.
[Button]
[Key]
• Button or key to be selected or pressed • Select [Enter].
# • Placeholder for variable components
(e.g., parameter names)
• Parameter WCtlHz.Hz#
1.7 Designations in the Document
Complete designation Designation in this document
SMA Home Storage 3.28kWh module SMA Home Storage, battery module, battery, battery
system, product
SMA Home Storage Base Unit Base
Sunny Boy Smart Energy
Sunny Tripower Smart Energy
Hybrid inverter, inverter
1.8 Additional Information
Additional information is available at www.SMA-Solar.com.
Title and information content Type of information
"SMA HOME STORAGE - Safety Information" Technical Information

1 Information on this Document SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-108
Title and information content Type of information
SUNNY BOY SMART ENERGY 3.6 / 4.0 / 5.0 / 6.0
Mounting, installation, commissioning, configuration, operation, troubleshooting
and decommissioning
Operating manual
SUNNY TRIPOWER 5.0 / 6.0 / 8.0 / 10.0 SMART ENERGY
Mounting, installation, commissioning, configuration, operation, troubleshooting
and decommissioning
Operating manual
SUNNY TRIPOWER SMART ENERGY
"Approved Batteries and Information on Battery Communication Connection"
Technical Information
"SMASmartHome"
The System Solution for Greater Independence
Planning Guidelines

2 Safety
SMA Solar Technology AG
Operating Manual 9HS-BM-3.28-10-BE-en-10
2 Safety
2.1 Intended Use
SMA Home Storage is a system from one or several battery modules and can be used in the SMA Home Storage
Solution for home applications, including for increasing self-consumption.
The communication interface of the inverter used must be compatible with the product. The entire voltage range must
be completely within the permissible input voltage range of the inverter. The maximum permissible DC input voltage of
the product must not be exceeded.
No additional loads or components in the DC connection may be connected between the battery and inverter.
The product is suitable for indoor and outdoor use.
The product must only be used as stationary equipment.
All components must remain within their permitted operating ranges and their installation requirements at all times.
The product is not suitable for supplying life-sustaining medical devices. A power outage must not lead to personal
injury.
The product must only be used in countries for which it is approved or released by SMA Solar Technology AG and the
grid operator.
Use SMA products only in accordance with the information provided in the enclosed documentation and with the
locally applicable laws, regulations, standards and directives. Any other application may cause personal injury or
property damage.
Alterations to the SMA products, e.g., changes or modifications, are only permitted with the express written permission
of SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG 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 the intended use
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient, dry place for
future reference and observe all instructions contained therein.
This document does not replace any regional, state, provincial, federal or national laws, regulations or standards that
apply to the installation, electrical safety and use of the product. SMA Solar Technology AG assumes no responsibility
for the compliance or non-compliance with such laws or codes in connection with the installation of the product.
The type label must remain permanently attached to the product.
2.2 Important Safety Information
Keep the manual for future reference.
This section contains safety information that must be observed at all times when working.
The product has been designed and tested in accordance with international safety requirements. As with all electrical
or electronical devices, some residual risks remain despite careful construction. To prevent personal injury and property
damage and to ensure long-term operation of the product, read this section carefully and observe all safety
information at all times.

2 Safety SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-1010
DANGER
Danger to life due to electric shock when live components or DC cables are touched
The DC cables connected to a battery may be live. Touching live DC cables results in death or serious injury due to
electric shock.
• Disconnect the product and inverter from voltage sources and make sure they cannot be reconnected before
working on the device.
• Do not touch non-insulated parts or cables.
• Do not disconnect the DC connectors under load.
• Wear suitable personal protective equipment for all work on the product.
DANGER
Danger to life due to electric shock when touching live enclosure parts with damaged
grounding conductor
High voltages may be applied to the enclosure of the product if the grounding conductor of the DC connection is
damaged or has not been connected correctly. Touching live enclosure parts results in death or lethal injuries due to
electric shock.
• Connect the grounding conductor for the DC connection as described in this document.
DANGER
Danger to life due to fire or explosion due to improper handling of the battery modules
Improper handling can cause the lithium inside the battery to ignite. This can cause a fire or explosion. Death or
lethal injuries due to hot or flying debris can result.
• Never use defective or damaged battery modules.
• Do not open, pierce, or drop battery modules.
• Do not install or operate the battery modules in potentially explosive atmospheres or areas of high humidity.
• Do not expose the battery modules to high temperatures.
• Never throw the battery modules on a fire.
• Store the battery modules dry and within the specified temperature range.
• If a fire starts from the battery, contact the fire department. Extinguishing is a high risk due to toxic gases, risk of
explosion and rapid spread.
• If a fire breaks out in the vicinity of the battery, use an ABC fire extinguisher.
DANGER
Danger to life due to electric shock when touching live system components in case of a ground
fault
If a ground fault occurs, parts of the system may still be live. Touching live parts and cables results in death or lethal
injuries due to electric shock.
• Disconnect the product and inverter from voltage sources and make sure they cannot be reconnected before
working on the device.
• Do not touch any parts of the substructure.

2 Safety
SMA Solar Technology AG
Operating Manual 11HS-BM-3.28-10-BE-en-10
DANGER
Danger to life due to electric shock when live components are touched on opening the product
High voltages are present in the live parts and cables inside the product during operation. Touching live parts and
cables results in death or lethal injuries due to electric shock.
• Do not open the product.
WARNING
Danger to life due to electric shock from destruction of the measuring device due to
overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the enclosure of the measuring
device. Touching the live enclosure of the measuring device results in death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000 V or higher.
WARNING
Danger to life due to burns caused by electric arcs through short-circuit currents
Short-circuit currents in the battery can cause heat build-up and electric arcs. Heat build-up and electric arcs may
result in lethal injuries due to burns.
• Disconnect the battery from all voltages sources prior to performing any work on the battery.
• Remove watches, rings and other metal objects prior to carrying out any work on the battery.
• Use insulated tools and wear insulated gloves for all work on the battery.
• Do not place tools or metal parts on the battery.
WARNING
Danger to life due to fire or explosion when batteries are fully discharged
A fire may occur due to incorrect charging of fully discharged batteries. This can result in death or serious injury.
• Put the battery into operation no longer than six months after delivery.
• If the battery is not put into operation within six months, contact Service to request reconditioning of the battery-
storage system.
• Before commissioning the system, verify that the battery is not fully discharged.
• Do not commission the system if the battery is fully discharged.
• If the battery is fully discharged, contact Service.

2 Safety SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-1012
WARNING
Risk of injury due to toxic substances, gases and dusts.
In rare cases, damages to electronic components can result in the formation of toxic substances, gases or dusts
inside the product. Touching toxic substances and inhaling toxic gases and dusts can cause skin irritation, burns or
poisoning, trouble breathing and nausea.
• Protect the battery enclosure against destruction.
• Do not open or deform the battery.
• Do not throw batteries into fire. Batteries may explode in fire.
• Only perform work on the battery (e.g., troubleshooting, repair work) when wearing personal protective
equipment for handling of hazardous substances (e.g., safety gloves, eye and face protection, respiratory
protection).
• Rinse acid splashes thoroughly for a long time with clear water, and consult a doctor.
• If acid fumes have been inhaled, consult a doctor immediately.
• Ensure that unauthorized persons have no access to the product.
• Install, operate, maintain and dispose of the battery according to the manufacturer’s specifications.
WARNING
Risk of injury due to weight of product
Injuries may result if the battery modules are lifted incorrectly or dropped while being transported or mounted.
• Transport and lift the product carefully. Take the weight of the product into account.
• Transport the product individually only.
• Always have several persons transport and mount the product. The number of persons depends on the locally
applicable standards and directives.
• Use suitable means of transport, e.g. a dolly. Do not damage the enclosure of the battery components.
• Wear suitable personal protective equipment, at a minimum safety footwear with a non-slip sole and steel cap,
for all work on the product.
CAUTION
Risk of burns due to hot battery modules
The battery module can get hot during operation. Touching hot battery modules can cause burns.
• Before touching the battery modules, wait until the battery modules have cooled down.
CAUTION
Risk of injury due to sharp edges
The battery components contain sheet metal parts with sharp edges. Touching the sharp-edged sheet metal parts
may result in injuries.
• Wear safety gloves for mounting and disassembling the battery.

2 Safety
SMA Solar Technology AG
Operating Manual 13HS-BM-3.28-10-BE-en-10
NOTICE
Damage to the battery modules due to moisture or corrosive substances
Moisture or corrosive substance penetration can damage the product and impair its functionality.
• Do not immerse battery modules in liquid.
• Do not expose battery cells to corrosive substances (e.g., ammonia, salt).
NOTICE
Damage to the product due to cleaning agents
The use of cleaning agents may cause damage to the product and its components.
• Clean all battery components with a dry cloth only.

3 Scope of Delivery SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-1014
3 Scope of Delivery
3.1 Scope of delivery of battery modules
Check the scope of delivery for any externally visible damage. If visible damages are detected, document the
damaged areas and immediately inform SMA Solar Technology AG. Never commission the battery if components are
damaged.
Figure 1: Components included in scope of delivery
Position Quantity Designation
A 1 Battery enclosure including cables for connecting more battery modules
B 1 Left side cover
C 1 Right side cover
D 1 Wall mounting bracket
E 1 Connecting element of two wall mounting brackets
F 5 Screw and washer assembly M5x12
G 2 Terminal lugs M5 for the connection of several modules with longer grounding
cable
H 1 Grounding cables between the battery modules, cross-section 6mm² with termi-
nal lugs M5
I 1 Positive MC4 connector by Stäubli
J 1 Negative MC4 connector by Stäubli

3 Scope of Delivery
SMA Solar Technology AG
Operating Manual 15HS-BM-3.28-10-BE-en-10
Position Quantity Designation
K 1 RS45 cable connector for connecting the communication cable (suitable for in-
door and outdoor installation)
L 1 Quick reference guide
3.2 Scope of delivery of base
Check the scope of delivery for any externally visible damage. If visible damages are detected, document the
damaged areas and immediately inform SMA Solar Technology AG. Never commission the battery system if
components are damaged.
Figure 2: Components included in scope of delivery
Position Quantity Designation
A 1 Base with 4 adjustable feet
B 2 Fixing bracket
C 6 Screw and washer assembly M5x12

4 Product Overview SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-1016
4 Product Overview
4.1 System Overview
Figure 3: Design of the system (example)

4 Product Overview
SMA Solar Technology AG
Operating Manual 17HS-BM-3.28-10-BE-en-10
4.2 Product Description
Figure 4: Design of the product
Position Designation
A LEDs
The LEDs indicate the operating state of the product.
B DC switch
Disconnects the product from the power path on the DC side.
C Type label
The type label clearly identifies the product. The type label must remain permanently at-
tached to the product. You will find the following information on the type label:
• Device type (Model)
• Serial number (Serial No. or S/N)
• Date of manufacture
• Device-specific characteristics
4.3 Symbols on the Product
Symbol Explanation
Beware of a danger zone
This symbol indicates that the product must be additionally grounded if additional grounding
or equipotential bonding is required at the installation site.
Beware of electrical voltage
The product operates at high voltages.
Warning of hazards from batteries
This symbol indicates the danger of handling batteries.

4 Product Overview SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-1018
Symbol Explanation
Potentially explosive substances warning
Improper handling or fire can cause the product to ignite or explode.
Corrosive substances warning
The product contains corrosive substances that can cause severe injury if they come into di-
rect contact with the skin.
Observe the documentations
Observe all documentations supplied with the product.
Use eye protection
Wear eye protection for all work on the device.
No open flame
Handling an open flame and sources of ignition is forbidden in the immediate vicinity of the
product.
Access is prohibited for all children
Children must be kept at a safe distance from the product.
Grounding
This symbol indicates the position for the connection of an additional grounding conductor.
WEEE designation
Do not dispose of the product together with the household waste but in accordance with the
disposal regulations for electronic waste applicable at the installation site.
The product is suitable for outdoor installation.
Degree of protectionIP65
The product is protected against the penetration of dust and water that is directed as a jet
against the enclosure from all directions.
CE marking
The product complies with the requirements of the applicable EU directives.
UKCA marking
The product complies with the regulations of the applicable laws of England, Wales and
Scotland.
RoHS
RoHS labeling
The product complies with the requirements of the applicable EU directives.
RCM (Regulatory Compliance Mark)
The product complies with the requirements of the applicable Australian standards.

4 Product Overview
SMA Solar Technology AG
Operating Manual 19HS-BM-3.28-10-BE-en-10
4.4 Interfaces and Functions
4.4.1 RJ45 connection
The battery is equipped with an RJ45 terminal as standard. The battery can communicate via cables with SMA
inverters via this RJ45 terminal (information on supported SMA products at www.SMA-Solar.com). For the
communicative connection of SunnyTripowerSmartEnergy, a pre-assembled communication cable is recommended
(see Technical Information "Approved Batteries and Information on Battery Communication Connection" of the
SUNNYTRIPOWERSMARTENERGY).
4.4.2 User Interface
The product is controlled by an inverter and is integrated into the user interface of the inverter.
4.4.3 Increased self-consumption
With increased self-consumption, the highest possible proportion of the power of a generator (e.g., a PV system) is
consumed at the place where it is generated. With increased self-consumption, power output and power consumption
at the point of interconnection are reduced.
The SMAHomeStorageSolution supports the increased self-consumption through intermediate storage of energy from
generators.
4.4.4 Black start
A black start is the startup of an energy supply system after a grid failure. With this black start, the energy supply
system uses internal energy reserves and is therefore independent of external energy sources.
The product supports a black start in conjunction with an inverter with battery-backup function and black start capacity.
If the energy supply from the utility grid and the PV system fails at the same time, a black start can be triggered
manually using the DC switch on the product.
4.5 LED signals of the battery modules
The LEDs indicate the operating state of the battery modules.
LED signal Explanation
The green LED is flashing
(2s on and 2s off)
Waiting for valid operating conditions
The conditions for charging and discharge mode are not yet met. As soon as the condi-
tions are met, the battery will start charging and discharging.
The green LED is glowing Charge and discharge mode
The battery charges or discharges in current-controlled operation.
The green LED is off No battery voltage
The red LED is glowing Error
Operation of the battery has been stopped. In addition, a distinct event message and
the corresponding event number will be displayed on the inverter user interface or in
the communication product (e.g., SMADataManage or SunnyHomeManager).
Red LED is flashing (0.25s
on, 0.25s off)
Alarm event regarding temperature or voltage
An alarm was triggered during operation. The battery keeps running, but the cause
should be checked.
Red LED is flashing (0.25s
on, 1.25s off)
Internal battery alarm
An alarm was triggered during operation. The battery keeps running, but the cause
should be checked.

4 Product Overview SMA Solar Technology AG
Operating ManualHS-BM-3.28-10-BE-en-1020
LED signal Explanation
The blue LED is flashing
slowly (2seconds on and
2seconds off)
Communication connection is being established.
The battery is establishing a connection with the connected inverter.
The blue LED is glowing There is an active connection to the connected inverter.
Blue LED is off There is no active connection.
All 3 LEDs are on Battery update or booting procedure
4.6 Battery Management
SOC
0 %
100 %
A
B
C
D
User SOC
Real SOC
Figure 5: State of charge ranges of the battery
Range Inverter parameters Inverter behavior
A - The inverter uses the battery within this range for in-
creased self-consumption. When more energy is
needed than can be supplied by the PV modules,
the battery is discharged.
BBattery > Areas of application > Minimum
width of backup power area (BatUsDm.BckD-
mMin)
The value indicates the percentage of battery
charge to be retained for battery-backup opera-
tion. This battery charge cannot be used in parallel
grid operation, even if the battery-backup opera-
tion is deactivated.