SUNKET-ESS LFP 5-10KWH/LV User manual

LFP 5-10KWH/LV
51.2V 100/200Ah
LiFePO4 BATTERY
User Manual v2.0

Content
Statement of Law................................................................................................... 1
Safety Precautions ................................................................................................. 2
Preface .................................................................................................................. 3
1 Introduction ..................................................................................................... 4
1.1 Brief Introduction .................................................................................................4
1.2 Product Properties................................................................................................ 4
1.3 Product identity definition....................................................................................5
2 Product Specification ....................................................................................... 6
2.1 Size and Weight ....................................................................................................6
2.2 Performance Parameter .......................................................................................6
2.3 Interface Definition ..............................................................................................6
2.4 Battery Management System(BMS) ......................................................................8
2.4.1 Voltage Protection ................................................................................................ 8
2.4.2 Current Protection ................................................................................................. 9
2.4.3 Temperature Protection ....................................................................................... 9
2.4.4 Other Protection .................................................................................................... 9
3 Installation and Configuration......................................................................... 10
3.1 Preparations for installation ................................................................................10
3.1.1 Environmental requirements............................................................................... 10
3.1.2 Tools and data ..................................................................................................... 11
3.1.3 Technical preparation .......................................................................................... 11
3.1.4 Open the box to have inspection......................................................................... 11
3.1.5 Engineering coordination .................................................................................... 13
3.2 Equipment installation ........................................................................................13
3.2.1 Floor installation .................................................................................................. 14
3.2.2 Mounted on the wall ........................................................................................... 15
3.2.3 Electrical installation............................................................................................ 17
3.2.4 Battery module DIP switch definition and description ........................................ 20
4 Use, maintenance and troubleshooting........................................................... 22
4.1 Battery system usage and operation instruction................................................. 22
4.2 Alarm description and processing ........................................................................
23
4.2.1 Alarm and countermeasure influence system output......................................... 23
4.2.2 Alarm and countermeasure without affecting the output of the system ........... 23
4.3 Analysis and treatment of common faults ........................................................... 24

LFP 5-10kWh/ LV User Manual
- 1 -
Statement of Law
Copyright of this document belongs to SUNKET ESS.
No part of this documentation maybe excerpted, reproduced, translated, annotated or duplicated in
any form or by any means with out the prior written permission of SUNKET ESS All Rights Reserved.
This product complies with the design requirements of environmental protection and personal
safety. The storage, use and disposal of the products shall be carried out in accordance with the
product manual, relevant contract or relevant laws and regulations.
Customer can check the related information on the website when the product technology is
updated.
Please note that the product can be modified without prior notice.
Manual Version: V1.0
Manual NO.
Revision History
Revision NO. Revision Date Revision Reason
1.0 2020.06.17 First Published
2.0 2021.03.20 Modify the shell size of lithium
battery
3.0 2022.05.07 Modified the color and content of
the nameplate of lithium battery

LFP 5-10kWh/ LV User Manual
- 2
-
Safety Precautions
Warning
Please do not put the battery into water or fire, in case of explosion or any other situation
that might endanger your life.
Please connect wires properly while installation, do not reverse connect.
To avoid short circuit, please do not connect positive and negative poles with conductor (Wires
for instance).
Please do not stab, hit, trample or strike the battery in any other way.
Please shut off the power completely when removing the device or reconnecting wires during the
daily use or it could cause the danger of electric shock.
Please use dry powder extinguisher to put out the flame when encountering a fire hazard, liquid
extinguisher could result in the risk of secondary disaster.
For your safety, please do not arbitrarily dismantle any component in any circumstances unless
a specialist or an authorized one from our company, device breakdown due to improper
operation will not be covered under warranty.
Caution
We have strict inspection to ensure the quality when products are shipped out, however, please
contact us if case bulging or another abnormal phenomenon.
For your safety, device shall be ground connected properly before normal use.
To assure the proper use please make sure parameters among the relevant device are
compatible.
Please do not mixed-use batteries from different manufacturers, different types and models,
as well as old and new together.
Ambient and storage method could impact the life span and product reliability, please
consider the operation environment abundantly to make sure device works in proper
condition.
For long-term storage, the battery should be recharged once every 6 months, and the amount
of electric charge shall exceed 80% of the rated capacity.
Please charge the battery in 18 hours after it discharges fully and starts over -discharging
protection.
Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total
current of all loads).
The surface of Powerbox cabinet is affixed with a torn invalid label. Therefore, before-opening
the cover to change the DIP switch mode, you need to contact HERBYTECK and inform the
product ID. HERBYTECK will record this battery ID and authorize the opening operation to be
performed. Except for changing the DIP switch mode, no other operations are allowed.

LFP 5-10kWh/ LV User Manual
- 3
-
Preface
Manual declaration
LFP 5-10kWh/ LV user manual lithium iron phosphate battery is external battery module which can
storage the power for home use. When the grid is on, it supplies the home loads and charges the
battery meantime. When grid off, the battery discharges to power up the home loads.
LFP 5-10kWh/ LV user manual systematically elaborates device structure, parameters, basic procedure
and method of installation, operation, maintenance.
Safety Statement
Only qualified trained professionals are allowed to install, operate, maintain the device.
Please comply with local safety regulations and operational rules when installation, operation
and maintenance, or it could lead to human injury or device damage.
Mentioned attentions are only as a supplement to local safety regulations.
The seller does not undertake any responsibility for device operations or usage violating
general safety requirements and safety standards.
Sign explanation
Attention should be paid when configuring or operating LFP 5-10/ LV products, which follows below
format to explain.
Caution
Neglecting the warnings might cause malfunction.

LFP 5-10kWh/ LV User Manual
- 4 -
1 Introduction
1.1 Brief Introduction
LFP 5-10kWh/ LV user manual lithium iron phosphate battery is newly power storage products designed
according to market demands, supplies reliable power for all kinds of home equipment. It is especially
suitable for situations with higher temperatures, less space, higher demand of weight and life span.
LFP 5-10kWh/ LV lithium battery carries self-developed battery management system. When the grid is on, it
supplies the home loads and charges the battery meantime. When grid off, the battery discharges to power
up the home loads.
Batteries can be paralleled to build a module with more capacity to satisfy the longtime energy storage
demand.
1.2 Product Properties
LFP 5-10kWh/ LV energy storage product's anode materials are lithium iron phosphate, battery cells are
managed effectively by BMS with better performance, the systems features as below:
Anode materials are lithium iron phosphate (LiFePO4), safer with longer life span.
Carries battery management system with better performance, possesses protection function like
over-discharge, over-charge, over current, abnormal temperature.
Self-management on charging and discharging, single core balancing function.
Intelligent design configures integrated inspection module, with 3 remote functions (remote-
measuring, remote-communicating and remote-controlling ).
Flexible configurations allow parallel of multi battery for longer stand by time.
Self-ventilation with lower system noise.
Less battery self-discharge, then recharging period can be up to 10 months during the storage.
No memory effect so that battery can be charged and discharged shallowly.
With wide range of temperature for working environment, -10℃~+50℃, circulation span and
discharging performance are well under high temperature.
Less volume, lighter weight, seal grade up to IP65 embedding design for easier installation and
maintenance.

LFP 5-10kWh/ LV User Manual
- 5
-
1.3 Product identity definition
FIG1-1 Battery Energy Storage System nameplate
Battery is voltage higher than safe voltage, direct contact with electric shock
hazard.
Be careful with your actions and be award of the dangers.
The battery product meet the United Nations regulations on transport of
dangerous goods.
The scrapped battery cannot be put into the garbage can and must be
professionally recycled.
After the battery life is terminated, the battery can continue to be used after it
recycled by the professional recycling organization and do not discard it at will.
This battery product meets European directive requirements.
All the parts of the battery meets TUV safety requirements.

LFP 5-10kWh/ LV User Manual
- 6 -
2 Product Specification
2.1 Size and Weight
Table 2-1 LFP 5-10kWh/ LV Device Model
Product Series Specification
Model
Nominal
Voltage
Nominal
Capacity
Dimension
(mm)
Weight
(kg)
IP
Level
LFP 5kWh/ LV 5.12V 100Ah 550×700×216 65 IP65
LFP 10kWh/ LV 51.2V 200Ah 645×995×225 125 IP65
2.2 Performance Parameter
Table 2-2 LFP 5-10kWh/ LV performance parameter
Module Type LFP 5kWh/ LV LFP 10kWh/ LV
Total Energy* 5.12kWh 10.24kWh
Usable Energy (DC)* 4.6kWh 9.2kWh
Nominal Dis-charge Power 3kW 4.6kW
Peak Power(Only Discharge) 7kWh for 3 seconds 10kWh for 3 seconds
Constant Current(Only Discharge) 100A 100A
Voltage 43.2~56Vd.c 43.2~56Vd.c
Nominal Voltage 51.2Vd.c 51.2Vd.c
Nominal Current 50A 100A
Max. Charge Voltage 58.4Vd.c 58.4Vd.c
Max. Charge Current 50A 100A
Max. Discharge Current 50A 100A
Safety CE UN38.3 CE UN38.3
2.3 Interface Definition
This section elaborates on interface functions of the front panel of the device
Figure2-1 LFP 5-10kWh/ LV the sketch of front interface.

LFP 5-10kWh/ LV User Manual
- 7 -
Table 2-3 Interface Definition
Item Name Definition
1Negative socket The battery DC output positive pole, which is connected to the
negative pole often inverter through the cable.
2Positive socket The battery DC output negative pole, which is connected to the
negative pole often inverter through the cable.
3RS485 The RS485 communication interface is used for parallel
communication between batteries.
4CAN
CAN
communication
interface
is
used
for
communication
between battery and inverter.
5LED1 Module capacity status indicator light
6LED2 Module capacity status indicator light
7LED3 Module capacity status indicator light
8LED4 Module capacity status indicator light
9ADD switch Use the switch to adjust the address when the battery is in
parallel mode.
10 5 6 7 8
12349
11

LFP 5-10kWh/ LV User Manual
- 8 -
10 Reset switch
Press the switch and the battery system turn on. When the
battery is in the non use state such as storage, transportation
etc., it need to be turn off by switch button, and the battery
system will automatically sleep after the device without external
load power.
11 Main switch
Open or cut off the main circuit, and ensure transportation
safety after cutting off
Table 2-4 LED status indicators (Take LFP 10kWh/ LV as an example)
Flashing 1£ bright 0.25s Light out 3.75s
Flashing 2£ bright 0.5s Light out 0.5s
Flashing 3£ bright 0.5s Light out 1.5s
System
state
Running state RUN ALM SOC Explain
Shut down Dormancy OFF OFF OFF OFF OFF OFF ALL OFF
Standby Normal Flashing 1 OFF OFF OFF OFF OFF
Charging
Normal Flashing 1 OFF According to the power prompt
Over current
alarm Flashing 1 Flashing 2 According to the power prompt
Over voltage
protection Flashing 1 OFF OFF OFF OFF OFF
Temperature、
Over current
protection
Flashing 1 Flashing 1 OFF OFF OFF OFF
Discharge
Normal Flashing 3 Flashing 3 According to the power prompt
Alarm Flashing 3 Flashing 3 According to the power prompt
Temperature,
Over current,Short circuit,
protection
OFF OFF OFF OFF OFF OFF
Stop discharge,
Mains offline 48h
no action forced
sleep.
Under voltage protection OFF OFF OFF OFF OFF OFF Stop discharge
2.4 Battery Management System (BMS)
2.4.1 Voltage Protection
Discharging Low Voltage Protection
When any battery cell voltage is lower than the Rated protection value or total voltage below 42V
during discharging, the over-discharging protection starts, and the battery buzzer makes an alarm
sound. Then battery system stops supplying power to the outside. When the voltage of each cell
recovers to rated value and total voltage restored to above 45V, the protection is released.
Charging Over Voltage Protection
When charging, the system stops charging when the total voltage of the battery pack is higher
than 54.75V or the voltage of any single cell reaches the protection value. When the total voltage
returns to below 52V and the cell voltage returns to below the rated protection value, the
protection is released.

LFP 5-10kWh/ LV User Manual
- 9 -
2.4.2 Current Protection
Over Current Protection in Charging:
When the charging current is greater than the protection value, the battery buzzer alarms and the
system stops charging. After the system delays the rated time for 1 min, the protection is released.
Over Current Protection in Discharging:
When the discharging current is greater than the protection value, the battery buzzer alarms and the
system stops discharging. After the system delays the rated time for 1 min, the protection is released.
Note:
The buzzer sound alarm setting can be manually turned off on the background software, and the
factory default is on.
2.4.3 Temperature Protection
Less/ Over temperature protection in charging:
When battery’s temperature is beyond range of 0℃~+45℃during charging, temperature protection
starts, device stops charging. The protection is released when it recovers to rated return range.
Less/ Over temperature protection in discharging:
When battery’s temperature is beyond range of -10℃~+45℃during discharging, temperature
protection starts, device stops supplying power to the outside. The protection is released when it
recovers to rated return range.
2.4.4 Other Protection
Short Circuit Protection:
When the battery is activated from the off state, if a short circuit occurs, the DC circuit breaker will act
first. If the DC circuit breaker does not operate, the BMS will start the short circuit protection function
and cut off the external voltage output.
Self Shutdown:
When device connects no external loads for over 72 hours,device will dormant standby automatically.
Caution
The maximum working current of the load which needs to be powered should be less than the
maximum discharge current capacity of the battery system.

LFP 5-10kWh/ LV User Manual
- 10 -
3 Installation and Configuration
3.1 Preparations for installation
Safety Requirement
This system can only be installed by personnel who have been trained in the power supply system
and have sufficient knowledge of the power system.
The safety regulations and local safety regulations listed below should always be followed during the
installation.
All circuits connected to this power system with an external voltage of less than 48V must
meet the SELV requirements defined in the IEC60950 standard.
If operating within the power system cabinet, make sure the power system is not charged.
Battery devices should also be switched off.
Distribution cable wiring should be reasonable and has the protective measures to avoid
touching these cables while operation power equipment.
When installing the battery system, must wear the protective items below:
The isolation gloves Safety goggles Safety shoes
3.1.1 Environmental requirements
Working temperature: -10℃~+50℃
Charging temperature range is 0oC~+45 oC,
Discharging temperature range is -10 oC ~+50 oC
Relative humidity: 4%~100%RH (No condensed water)
Elevation: no more than 4000m
Operating environment: Indoor or outdoor installation, sites avoid the sun and no wind, no
conductive dust and corrosive gas.
And the following conditions are met:
Installation location should be away from the sea to avoid brine and high humidity environment.
The ground is flat and level.
There is no flammable explosive near to the installation places.
The optimal ambient temperature is +15℃~+30℃.
Keep away from dust and messy zones.

LFP 5-10kWh/ LV User Manual
- 11 -
3.1.2 Tools and data
Hardware tool
Tools and meters that may be used are shown in table 3-1.
Table 3-1 Tool instrument
Name
Screwdriver (word, cross) AVO meter
Wrench Clamp meter
Inclined pliers Insulating tape
Needle nose pliers The thermometer
Clip forceps Wrist strap
Wire stripper AVO meter
Electric drill Tape
3.1.3 Technical preparation
Electrical interface check
Devices that can be connected directly to the battery can be user equipment, power supplies, or
other power supplies.
Confirm whether the user equipment, the PV equipment or other power supply equipment
has the DC standby interface, and measure whether the output voltage of the standby interface
meets the requirements of the voltage range of table 2-2.
Verify that the maximum discharge current capacity of the user equipment, the PV equipment
or other power supplies, the DC standby interface, and the maximum discharge current shall be
greater than the maximum charging current of the products used in table 2-2.
If the user equipment DC prepared interface maximum discharge capacity is less than the
maximum charging current products using table 2-2, the user interface should have the power
equipment of DC current limiting function, give priority to ensuring the normal work of user
equipment.
The security check
Firefighting equipment should be provided near the equipment, such as portable dry powder
fire extinguisher.
Automatic fire fighting system shall be provided for the case where necessary.
No flammable, explosive and other dangerous articles and placed beside the battery.
3.1.4 Technical preparation
When the equipment arrivals at the installation site, loading and unloading should be carried
out according to the rules and regulations, so as to prevent from being exposed to sun and rain.

LFP 5-10kWh/ LV User Manual
- 12 -
Before unpacking, the total number of packages shall be indicated according to the shipping list
attached to each package, and the case shall be checked for good condition.
In the process of unpacking, handle with care and protect the surface coating of the object.
Open the package, the professional installation person should read the technical documents,
verify the list, according to the configuration table and packing list, ensure objects are complete
and intact. If the internal packaging is damaged, it must be inspected and recorded in detail.
Packing list is as follows:
Battery ×1 Battery bottom bracket x1 Support bracket x1
M6 bolt ×8; Fixing battery box with
battery bracket
Power cable ×2
Connect battery with inverter
Communication cable Positioning cardboard ×1
Expansion screw ×4 User manual ×1

LFP 5-10kWh/ LV User Manual
- 13 -
3.1.5 Engineering coordination
Attention should be paid to the following items before construction:
Power line specification.
The power line specification shall meet the requirements of maximum discharge current for
each product.
Mounting space and bearing capacity.
Make sure that the battery has enough room to install, and that the battery rack and bracket have
enough load capacity.
Wiring.
Make sure the power line and ground wire are reasonable. Not easy to short-circuit, water and
corrosion.
3.2 Equipment installation
Strongly recommended: floor installation;
If it is wall-mounted installation, strictly follow the requirements below.
The wall for battery installation shall be solid brick or cement wall with strong bearing capacity and
wall thickness no less than 100mm.
Mounting space requirements:
Floor installation Mounted on the wall installation

LFP 5-10kWh/ LV User Manual
- 14 -
Table 3-2 Installation steps
Step1 System outage Ensure that the battery is in a shutdown state
Step 2 Mechanical
installation
1. Hanger mounting
2.Equipment installation
Step3 Electrical
installation
1. Connect the ground cable
2. Electrical installation
3. Connect inverter
4. Communication interface connection
3.2.1 Floor installation
When the battery system is placed directly on the ground, a fixed support must be used to fix the top of
the battery box with the wall.
1 Use the positioning cardboard
provided with the goods to draw
the screw hole positions on the
wall, as shown in the four holes
on the left.
2 The bottom of board must be good
connection with the ground level
while drawing the holes.
3 4 holes with diameter of 10mm shall
be opened on the wall with electric
drill according to the marked position,
and the hole depth shall be greater
than 70mm to fit the expansion bolts
of M6.

LFP 5-10kWh/ LV User Manual
- 15 -
4 Fixing the expansion bolt M6 into the
Bottom of the hole on the wall.
5 Use the M6 bolt to fixing the Support
bracket to the wall and control the
torque at 6NM.
6Carry the battery box to the
Installation site, and place it about
15mm away from the vertical wall
surface, fi xing the Support
bracket and the upper part of the
battery box with M6 bolts.
3.2.2 Mounted on the wall
The following accessories need to be added when mounted the battery on the wall.
Battery bottom bracket ×1 Expansion screw ×1

LFP 5-10kWh/ LV User Manual
- 16 -
Installation procedure:
1 Use the positioning cardboard provided
with the goods to draw the screw hole
positions on the wall, as shown in the
four holes on the left.
2 The cardboard must be perpendicular
to the ground while drawing the holes.
3 The bottom of the cardboard is about
300mm from the ground.
4 According to the position of the
mark, 8 holes in diameter 10mm
and depth of more than 70mm are
hit on the wall with an electric drill,
which are used for fitting expansion
bolt M6.
5 Fixing the expansion bolt M6 into the
bottom of the hole on the wall, and fix
the support bracket and battery
bottom bracket on the wall with M6
bolts, twisting force keeps 6NM.
6 Carry of hoist the battery to the
installed battery bottom bracket.
Fixing the support bracket and the
upper part of the battery with M6 bolts,
twisting force keeps 6NM. Then fixing
the battery bottom bracket and the
bottom part of battery with M6 bolts,
twisting force keeps 6NM.

LFP 5-10kWh/ LV User Manual
- 17 -
3.2.3 Electrical installation
Before connecting the power cables, using multimeter to measure cable continuity, short circuit,
confirm positive and negative, and mark well the cable labels.
Measuring methods:
Switch off cables: select the buzzer and use the probe to measure the ends of the same color cable.
If the buzzer calls, it means the cable is available.
Short circuit judgment: choose multimeter resistor file, probe the same end of positive and
negative pole, if the resistor shows infinity, means that the cable is available.
After visual testing of power line is connected well, the positive and negative poles of the battery
shall be connected respectively to the positive and negative poles of another device.
Connected inverter
Note:
If there is any question during installation, please contact your dealer to avoid damage to the
equipment.
When the system is used independently:
Note: Before installation, please confirm whether the DIP switch mode of No.1 module in battery is
correct according to the inverter used. For specific dialing methods, please refer to “3.2.4 battery
module DIP switch definition and description.” Except for the inverter specified by the customer’s
special requirements, the factory default DIP switch mode of Module No.1 is DIP Switch model 1( ADD:
0000). If the inverter is equipped with other DIP switch mode, open the cover and set DIP switch mode
of the module No.1 to the correct mode. Before opening the cover to operate, you must contact
SUNKET ESS and inform the ID of Battery. SUNKET ESS records this battery ID and authorizes the
opening operation. Except charging the DIP switch mode, no other operation can be done.
The battery is connected to the inverter, and it is required to use the dedicated power cable and
communication cable( as accessories shipped with the cargo, the standard communication cable is
a standard network cable. The applicable inverter is marked on the label of the network cable. If
the inverter used by the customer is not covered by the standard communication cable, please
contact HERBYTECK for the correct PIN Sequence).
Keep the battery system at power off state, connect the power cable to the interface on the input
side of the inverter first, and then connect the power cable to the interface on the battery side.
The battery out put interface is a quick connector, and the power cable (Positive, Negative) plug
can be directly inserted into the battery socket. The power cable has a cross section of 25 mm2

LFP 5-10kWh/ LV User Manual
- 18 -
Communication port interface
Connect the CAN Cable of the battery to the CAN communication interface of the inverter using the
RJ45 cable.
Factory default CAN communication mode.