LIVOLTEK BLF51 Series User manual

Operating Manual
BLF51 Series
Version: BLF51-EU-1.10

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........................................................... 1
2. Safety............................................................................................... 2
2.1 Intended Use......................................................................... 2
2.2 Important Safety Instructions .................................................. 2
3. Scope of Delivery ............................................................................. 4
4. Product Description .......................................................................... 5
5. Mounting ......................................................................................... 7
5.1 Requirements for Mounting.................................................... 7
5.2 Mounting the Battery ............................................................. 8
6. Electrical Connection...................................................................... 11
6.1 Overview of the Connection Area ........................................ 11
6.2 Battery Power Connection.................................................... 12
6.3 BMS Communication Connection ........................................ 13
6.4 Parallel Connection of Multi-batteries................................... 14
7. Operating of the Battery ................................................................. 16
7.1 LED Indicator ...................................................................... 16
7.2 Turn On/Off the Battery ...................................................... 16
8. Technical Data ............................................................................... 17
Contacts:............................................................................................... 18

1
1. About This Manual
1.1 Products Covered by This Manual
BLF51 Series li-ion battery:
BLF51-5.3 and BLF51-10.7.
1.2 Target Group
This document is intended for qualified electrician. Any electrical
installation and maintenance on this inverter 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.
Indicates a hazard with a high level of risk
that will result in death or serious injury.
Indicates a hazard with a medium level of
risk that can result in death or serious
injury.
Indicates a hazard with a low level of risk
that can result in minor or moderate injury.
Indicates a situation which, if not avoided,
can results in property damage.
1.4 Storage of the Manual
The manual should be stored with other documents belonging to the
inverter and must be available to people authorized to work on the
installation.

2
2. Safety
2.1 Intended Use
The BLF51 Series is lithium battery for energy storage system. It must
only be connected with a Livoltek hybrid inverter/battery inverter.
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.
2.2 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.
• Do not open the battery cover or ch
ange any components
without authorization, otherwise the warranty commitment for
the battery will be invalid.

3
• Appropriate methods must be adopted to protect battery from
electrostatic discharge; any damage caused by ESD is not
warranted by the manufacturer.

4
3. Scope of Delivery
A
B
C
D
Item
QTY
Designation
A
1
Battery
B
1
Wall Mounting Bracket
C
4
Screws for Fixing Mounting Bracket
D
1
Manual
Accessories for different applications may be different.

5
4. Product Description
Thank you for choosing a Livoltek battery. Features of the Livoltek
battery are ahead of the field and should be understood prior to install.
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
Reset button with LED indicator
C
Label

6
Symbols on the Type Label
Symbol Explanation
Caution, Risk of Danger
Caution, Risk of Electric Shock
Refer to the Operating Manual
WEEE Mark. This inverter should not be disposed
as ordinary waste.

7
5. Mounting
5.1 Requirements for Mounting
Check to make sure the installation site does not fall into any of the
following conditions: If any do, then a risk assessment will be required.
• This product is designed only for indoor use.
• Unsafe due to assessment of occupational health safety risks.
• The ambient temperature is outside the range of tolerable ambient
temperature (-20°C to +50°C, -4°F to +122°F).
• Close to flammable materials or areas where flammable materials are
stored.
• Prone to be damaged by sea water.
• Prone to be flooded or high levels of snow falls.
• Close to corrosive gas or liquid (for example, locations where
chemicals are processed or stored).
• Exposed to direct sunlight or in an enclosure exposed to direct sunlight.
• Little or no air flow
• Mounted on a surface without suitable fire/heat rating.
• Mounted on a wall without suitable load holding capacity.
• High humidity.
• Sites considered unsafe because of local regulations.
• Confined space without adequate airflow.
• Area subject to sand or dust storms.
• Exposed to steam, vapor, or water.

8
5.2 Mounting the Battery
Procedure:
The converter must be mounted in upright position with a maximal tilt
angle of 15 degree.
Minimum clearances around inverter should be applied, as the
following figure shown.
STEP 1:
• Please use the wall
mounting bracket as
template to drill 4 holes
on walls.

9
STEP 2:
• Use expansion bolts
or correct wall fixings
to attach the
mounting bracket on
the wall tightly.
STEP 3:
• Lift and hang the battery
on the bracket.
STEP 4:
• Peel off the protective film on the front surface.

11
6. Electrical Connection
6.1 Overview of the Connection Area
Position
Designation
A
Battery Power Ports
B
DC Isolator
C
Power Switch
D
Grounding Port
E
BMS Ports

12
6.2 Battery Power Connection
Battery connection diagram
Procedure:
Before connecting the power cable, make sure the battery is turned
off, and the DC isolator 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.
Power line
Communication line

13
6.3 BMS 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
2
3
4
5
6
7
8
1. BMS_CAN_H
2. BMS_CAN_L
3. BMS_485_A
4. GND
5. BMS_485_B
6. GND
7. NULL
8. NULL

14
6.4 Parallel Connection of Multi-batteries
Up to 5units of BLF51 Series batteries can be parallel connected in one
system.
Parallel Connection Diagram
Procedure:
STEP 1:
• Connect all the positive terminals of power ports of eachbattery.
• Connect all the negative terminals of power ports of each
battery.
• Connect the power ports to inverter.
・・・
up to 5 units

15
STEP 2:
• Connect the BMS ports of each battery. The COM DOWN should be
connected to the COM UP.
• Then connect the BMS port to inverter.
• Set the parallel number in the Livoltek Local APP. For example, if
there are “3” batteries connected, then set the number as “3”.

16
7. Operating of the Battery
7.1 LED Indicator
The LED indicates the operating state of battery and also battery SOC.
LED
Explanation
Blue
The battery’s status is normal; SOC is above 20%.
Green
The battery’s status is normal; SOC is below 20%.
Red
Attention light(when appearing for 5 minutes or less)
indicates self-recoverable faults present.
Red
Warning light (when red light is on for more than 12
hours) contact technical support as detailed in the
manual.
7.2 Turn On/Off the Battery
• When turn on the battery, turn on the isolator firstly, then switch on the
battery;
• When turn off the battery, switch off the battery firstly, then
disconnect the isolator.

17
8. Technical Data
Electrical Data BLF51-5.3 BLF51-10.7
Cell Type
LFP
LFP
Total Energy 5.37 kWh 10.75 kWh
Depth of Discharge 90% 90%
Usable Energy
5.3 kWh
10.7 kWh
Nominal Voltage
51.2 V
51.2 V
Operating Voltage Range
40-58.4 V
40-58.4 V
Nominal Capacity 105 Ah 210 Ah
Max. Charge Current
50 A
100 A
Max. Discharge Current 100 A 100 A
Max. Parallel Number 5 units 5 units
General Data BLF51-5.3 BLF51-10.7
Mounting information Wall mount / Ground mount
Communication CAN / RS485
Operating Temperature 0~45C charge / -10~55C discharge
Dimension 415*665*165 mm 415*1135*165 mm
Weight 45 kg 85 kg
IP Protection Type IP21

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Contacts:
Hangzhou Livoltek Power Co., Ltd
Address: 1418-35 Moganshan Road, Hanghzou, 310011, China
Tel: [phone]
Fax: [phone]
Email: [e-mail]