LIVOLTEK BLF51 Series User manual

User Manual
BLF51 Series (IP21)
BLF51-5.R310 v2.3

CONTENTS
1. About This Manual ............................................................................ 1
1.1 Products Covered by This Manual ...................................... 1
1.2 Target Group.......................................................................... 1
1.3 Symbols Used ......................................................................... 1
1.4 Storage of the Manual.......................................................... 2
2. Safety ................................................................................................. 2
2.1 Important Safety Instructions ..................................................... 2
2.2 Response to Emergency Situations ........................................... 3
2.3 Limitation of Liability.................................................................... 4
3. Scope of Delivery.............................................................................. 6
4. Product Description .......................................................................... 8
5. Mounting.......................................................................................... 10
5.1 Environment Requirements ................................................ 10
5.2 Angle and Space Requirements............................................. 11
5.3 Mounting the Battery .......................................................... 12
6Electrical Connection .................................................................... 15
6.1 Overview of the Connection Area ................................... 15
6.2 Battery Power Connection................................................. 16
6.3 BMS Communication Connection .................................... 17
6.4 Parallel Connection of Multi-batteries .............................. 18
7Operating of the Battery................................................................ 20
7.1 LED Indicator ........................................................................ 20
7.2 Turn On/Off the Battery ...................................................... 20
8Technical Data................................................................................ 21

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1. About This Manual
1.1 Products Covered by This Manual
BLF51 Series Li-ion battery:
BLF51-5
1.2 Target Group
This manual is intended for a qualified electrician. Any electrical
installation and maintenance on the battery must be performed
by qualified electricians in compliance with standards, wiring rules
or requirements of local grid authorities or bodies.
1.3 Symbols Used
The following types of safety precautions and general information
symbols are used in this manual. These important instructions must
be followed during installation, operation and maintenance of the
battery.
Symbol
Description
Indicates a hazard with a high level of risk
that, if not avoided, will result in death or
serious injury.
Indicates a hazard with a medium level of risk
that, if not avoided, could result in death or
serious injury.
Indicates a hazard with a low level of risk that,
if not avoided, could result in minor or
moderate injury.
Indicates a situation that, if not avoided,
could result in equipment or property
damage.

2
1.4 Storage of the Manual
Please keep the manual properly and operate in strict accordance
with all safety and operating instructions in this manual. The
information in this manual is subject to change without notice. Please
check www.LIVOLTEK.com for more information.
2. Safety
The manual describes the installation, commissioning,
maintenance of the battery. Please read it carefully before
operating. To prevent personal injury and property damage and
to ensure long- term operation of the product, please read and
follow all the instructions and cautions on the battery and this user
manual during installation, operation or maintenance at all times.
2.1 Important Safety Instructions
Danger to life from electric shock.
•Before performing any work on the battery, make sure the
battery is power off and the DC isolator is disconnected.
•Do not short connect the DC connectors of the battery, which
may cause electric shock to personnel and damage to the
product.
•Do not touch DC connectors of the battery.
•If an error occurs, contact your local distributor or qualified
electricians.
•Only authorized service personnel are allowed to install the
battery or perform servicing and maintenance.
•The power should be disconnected before attempting any
maintenance or cleaning or working to the battery.

3
•Do not open the battery or change any components without
authorization, otherwise the warranty commitment for the
battery will be invalid.
•Appropriate methods must be adopted to protect battery from
electrostatic discharge; any damage caused by ESD is not
warranted by the manufacturer.
2.2 Response to Emergency Situations
➢Leaking Batteries
If the battery leaks electrolyte which is corrosive, avoid contact with
the leaking liquid or gas. Direct contact may lead to skin irritation or
chemical burns. If one is exposed to the leaked substance, do these
actions:
• Accidental inhalation of harmful substances: Evacuate people
from the contaminated area, and seek medical attention
immediately.
• Eye contact: Rinse eyes with flowing water for 15 minutes, and
seek medical attention immediately.
• Dermal contact: Wash the affected area thoroughly with soap
and water, and seek medical attention immediately.
• Ingestion: Induce vomiting, and seek medical attention
immediately.
➢Wet Batteries or Damaged Batteries
• If the battery is wet or submerged in water, do not try to access
it.
• If the battery seems to be damaged, they are not fit for use and
may pose a danger to people or property.

4
• Please pack the battery in its original container, and then return
it to your distributor
➢ Fire
• If a fire breaks out where the battery is installed, do these
actions:
• Extinguish the fire before the battery catches fire;
• If the battery has caught fire, do not try to extinguish the fire.
• Evacuate people immediately.
2.3 Limitation of Liability
Any product damage or property loss caused by the following
conditions LIVOLTEK does not assume any direct or indirect liability.
• Product modified, design changed or parts replaced without
LIVOLTEK authorization;
• Changes, or attempted repairs and erasing of series number or
seals by non LIVOLTEK technician;
• System design and installation are not in compliance with
standards and regulations;
• Failure to comply with the local safety regulations;
• The Product has been improperly stored in distributor’s or end
user’s premises;
• Transport damage (including painting scratch caused by
movement inside packaging during shipping). A claim should be
made directly to shipping or insurance company as soon as the

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container/packaging is unloaded and such damage is identified;
•Failure to follow any/all of the user manual, the installation guide
and the maintenance regulations;
•Improper use or misuse of the device;
•Insufficient ventilation of the device;
• The maintenance procedures relating to the product have not
been followed to an acceptable standard;
• Force majeure (violent or stormy weather, lightning, overvoltage,
fire etc.)
• Damages caused by any external factors.

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3. Scope of Delivery
A
B
C
D
E(optional)
F
G
H(optional)
I
Item
QTY
Designation
A
1
Battery
B
1
Wall Mounting Bracket
C
4
Screws for Fixing Mounting Bracket
D
1
Manual
E
1pair
Power cable-to livoltek inverter
positive&negative,4AWG；
F
1 pair
Parallel Power cable- positive & negative，
4AWG；
G
1
Communication cable；Double RJ45 plug;

7
H
1
RJ45 terminal resistor(Optional)
I
1
MSDS report documents
Accessories for different applications may be different.

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4. Product Description
Thank you for choosing the LIVOLTEK battery. The BLF51 Series battery
is a series of Low Voltage Lithium-ion battery. It is designed for
residential and commercial energy storage system. It must only be
connected with a officially tested inverter (Hybrid or Off-Grid series).
Figure 1. View of the BLF51 Series Lithium Battery
Position
Designation
A
Connection Area Cover
For All-in-one application with hybrid inverter, the
cover is not included.
B
Nameplate Label: Clearly identify the product,
including the SN, technical data, certifications,
etc.
C
Warning label (Optional)

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If the battery is not used or not installed for a long time, it is
recommended to measure the voltage and charge it before use
for better maintenance.
Icons on the Nameplate
Symbol
Explanation
Caution, Risk of Danger
Caution, Risk of Electric Shock
Refer to the Operating Manual
WEEE Mark. This battery should not be
disposed as ordinary waste.

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5. Mounting
5.1 Environment Requirements
Install the Battery System on the surface with sufficient bearing capacity and
flatness, wooden surface is prohibited . Increase the bearing capacity and
flatness of the surface by laying the foundation, adding bearing plates and
so on.
• Keep children away from the equipment.
• The optimal ambient temperature for the battery is 15~35℃.
• Avoid exposing the equipment to direct sunlight or rain.
• Install the equipment away from heat/cold source.
• Do not install the equipment in the place where the temperature
changes extremely.
• Install the equipment away from strong interferences to ensure its
regular work.
• Do not install the equipment in places prone to accumulate water.
• Do not put inflammable or explosive matters near the equipment.

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5.2 Angle and Space Requirements
Never install the Battery horizontally, or with a forward tilt or with a
backward tilt or even with upside down. Install the battery upright
or at a maximum back tilt of 15 degrees to facilitate heat dissipation.
This battery is indoor version and can be only installed in an indoor
location. The space around batteries recommended refer to the
figure below
Position
Min.size
Left
100
Right
100
Top
200（inverter not included）
Bottom
50
Front
300
Space
Requirement

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5.3 Mounting the Battery
5.3.1 Unpack and Check for Transport Damage
Unpacking the battery package and make sure the battery is
intact during transportation. If there are some visible damages,
such as cracks, or missing, please contact your dealer
immediately.
5.3.2 Procedure for All-in-one Application
The battery bracket, power cables, and BMS cables are along with
the inverter in the inverter package. For more detailed information
and installation steps, please refer to the inverter user manual.
5.3.3 Procedure for Expansion Application
STEP 1: Anchor Battery Bracket
•Plan and measure the distance between system components
and determine whether cables will be routed into the system
from the top, bottom, or side of the enclosure before
installation.
•Make sure the wall is strong enough to withstand the weight of
battery.
•Take out the Wall-mounting Bracket (battery-bracket) and
locate the appropriate drilling holes, then mark it with a marker
pen.
•Drill holes with driller, make sure the holes are deep enough (at
least 60mm) to support the battery.

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Product back dimension drawing
STEP 2: Screw the bracket on the wall
• Use expansion bolts or correct
wall fixings to attach the
mounting bracket on the wall
tightly.

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STEP 3: Mount the Battery to the Bracket
•Lift and hang the battery to the
battery-bracket and ensure that the
two mounting ears perfectly engage
with the battery -bracket.
STEP 4: Open the Connection Area Cover
•Pull out the front cover of the wiring area, unscrew the
upper cover and open the upper cover, then connect the
battery cable and the BMS communication cable (refer to
in Chapter 6).
STEP 5: Install the Connection Area Cover
•After the electrical connections is finished, put on the upper
cover of connection area and lock the screws and then
push in the front cover.

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6Electrical Connection
6.1Overview of the Connection Area
Position
Designation
A
Grounding Port
B
Battery Power Ports
C
DC Isolator
D
LED Indicator
E
Power Switch
F
BMS Ports

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6.2Battery Power Connection
Battery connection diagram
Procedure:
Before connecting the power cables, make sure the DC isolator
of the battery is disconnected.
STEP 1:
•Please assemble the connectors if
they are not pre-assembled.
• Install the connectors to battery
power ports; make sure the
polarities are correct
STEP 2:
•Plug the other ends of power cables into inverter.
Please contact with your inverter vendor for
detailed information.

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6.3BMS Communication Connection
Please check whether the BMS communication cable in the
accessory box is appropriate for the battery. If you are not sure
for that, please confirm with your vendor.
Procedure:
STEP 1:
•Please insert the RJ45 connector into the BMS port of battery.
STEP 2:
•Please insert the other end of the cable in the corresponding
port of inverter.
BMS Connector Pin Definition:
1. BMS_CAN_H
2. BMS_CAN_L
3. BMS_485_A
4. GND
5. BMS_485_B
6. NULL
7. NULL
8. NULL