SunSynk SUNSYNK-L3.0 User manual

SUNSYNK-L3.0
Room 702-704, 7/F Texwood Plaza, 6 How Ming Street,
Kwun Tong, Kowloon, Hong Kong
Tel: [phone] Fax: [phone]
www.sunsynk.com / [email protected]
USER MANUAL
v.5 (10/04/23) PLEASE RETAIN FOR
FUTURE REFERENCE

SUNSYNK-L3.0 | User Manual2
Table of Contents
INTRODUCTION 3
BATTERYEXPANSIONANDUSE 3
SAFETY 4
General Safety 4
Symbols/Safety Signs 4
Procedures and Precautions Before Connecting 5
Safety Precautions While Using 5
Handling 6
Damaged Battery 6
SPECIFICATIONSANDFUNCTIONS 6
Dimensions and Weigh 6
Basic System Architecture 7
TECHNICALDATA 8
EQUIPMENTINTERFACEINSTRUCTION 9
INSTALLATION 11
Parts List 11
Installation Precaution 11
Selecting the Mounting Area 12
Tools and Safety Gears Necessary 13
Mounting the Battery 14
Installation 14
Connection Inspection 15
Starting the SUNSYNK-L3.0 Battery 15
Symbol Explanation 15
INSPECTION,CLEANINGANDMAINTENANCE 16
General Information 16
Inspection 17
Cleaning 17
Maintenance 17
Storage 17
TROUBLESHOOTING 17
BATTERYRECOVERY 19
Recovery Process and Steps of Cathode Materials 19
Recovery of Anode Materials 19
Recovery of Diaphragm 19
List of Recycling Equipment 19
TRANSPORTATIONREQUIREMENTS 20

SUNSYNK-L3.0 | User Manual3
INTRODUCTION
Thank you for choosing Sunsynk’s energy storage system.
This lithium iron phosphate battery is one of the new energy storage products developed and produced by
SUNSYNK. It can be used to support reliable power for various types of equipment and systems.
This battery is especially suitable for application scenes of high power, limited installation space, restricted
load bearing, and long cycle life.
This battery has a built-in BMS battery management system, which can manage and monitor cell information,
including voltage, current, and temperature. What’s more, BMS can balance cells charging and discharging to
extend cycle life.
Multiple batteries can connect in parallel for larger capacity and longer power-supporting duration require-
ments.
Some main features of this product are:
Convenient: Quick installation, Wall mounted design, comfortable for installation and maintenance in-
cluded.
Safe and reliable: Cathode material is made from LiFePO4 with safety performance and long cycle life.
The module has less self-discharge, up to 6 months without charging it on the shelf, no memory eect,
and excellent deep charge and discharge performance.
Intelligent BMS: It has protection functions including over-discharge, over charge, over-current, and
over-high or low temperature. The system can automatically manage the charge and discharge state and
balance the current and voltage of each cell.
Eco-friendly: The whole module is non-toxic, non-polluting, and environmentally friendly.
Flexible conguration: Multiple battery modules can be in parallel for expanding capacity and power.
Support remote upgrade (Compatible with SUNSYNK inverter).
Wide temperature: IP65 designed, operation temperature range is from -20ºC to 55ºC, support heating.
The production date of the original batteries and newly added batteries should be as close as possible,
within one year is best. If the time dierences of production are too long, the battery capacity deviation
will be large, and the batteries' energy cannot be fully utilised.
Before expansion, please fully charge the original batteries to 100% (keep SOC 100%), and then charge
the batteries that need to be added to SOC 100%. Next, assemble to achieve the purpose of expansion.
The original batteries can be charged using an inverter; The newly added batteries need to be charged
separately with the battery charger.
Please consult relevant technical personnel before expansion. The individual will bear all consequences
caused by personal misoperation, not covered by the Sunsynk warranty.
Sunsynk lithium battery is prohibited to work in Lead-acid Mode. Any failure caused by using a Lead-acid
model is not covered by the Sunsynk warranty.
BATTERYEXPANSIONANDUSE

SUNSYNK-L3.0 | User Manual4
SAFETY
GeneralSafety
It is crucial and necessary to read the user manual carefully (in the accessories) before installing or using
the SUNSYNK-L3.0 battery. Failure to do so or to follow any of the instructions or warnings in this docu-
ment can result in electrical shock, serious injury, death, or damage to the battery, potentially rendering
it inoperable.
It is required to charge the battery every six months, and the SOC should be no less than 50% in case it
is stored for a long time.
The battery needs to be recharged within 48 hours after being fully discharged.
Do not expose the cable outside.
All the battery terminals must be disconnected before starting the maintenance.
Please, contact the supplier within 24 hours if something abnormal happens.
Do not use cleaning solvents to clean the battery.
Do not expose the battery to ammable or harsh chemicals or vapours.
Do not paint any part of the battery, including any internal or external components.
Do not connect the battery with PV solar panel wiring directly.
The warranty claims are excluded for direct or indirect damage due to the items above.
Any foreign object is prohibited from inserting into any part of the battery.
Sunsynk's products are designed with full consideration for safety. However, all electrical appliances can be
dangerous if used inappropriately. They can cause a re or electric shock, leading to severe injury or death.
For your protection, please read these safety precautions thoroughly.
Symbols/SafetySigns
This symbol indicates information that if
ignored, could result in personal injury,
physical damage or even death due to
incorrect handling.
This product's batteries contain an
explosive, self-reactive material that
could blow up when heated.
Electrical Hazard. Read the manual.
Danger. Indicates that this product is recycla-
ble.
The Battery is heavy and can cause inju-
ry if not handled safely.
Do not place near open re or incin-
erate. Do not use near heaters or hot
temperature sources.
Do not submerge the battery in water
or expose it to moisture or liquid.
Do not disassemble or alter the battery
in any way. Do not strike or puncture
the battery.
Do not drop, deform, or impact the
battery.
Do not step or put any objects onto
the battery.

SUNSYNK-L3.0 | User Manual5
ProceduresandPrecautionsBeforeConnecting
After unpacking, please, rst check the product and packing list. Please, get in touch with the local retail-
er if some product is damaged or lacks parts.
Before installation, cut o the grid power and ensure the battery is in the turned-o mode.
Wiring must be correct, do not mistake the positive and negative cables, and ensure there is no short
circuit with the external device.
It is prohibited to connect the battery and AC power directly.
The battery system must be well grounded, and the resistance must be less than 1Ω.
Please ensure the electrical parameters of the battery system are compatible with related equipment.
Keep the battery away from water and re.
SafetyPrecautionsWhileUsing
Cut o the power and completely shut down the battery before moving or repairing the battery.
Connecting the SUNSYNK-L3.0 battery with a dierent type of battery is prohibited.
It is forbidden to put the batteries working with faulty or incompatible inverters.
It is not permitted to disassemble the battery.
Liquid re extinguishers are forbidden. In case of re, only dry re extinguishers can be used.
Please do not open, repair, or disassemble the battery except sta from SUNSYNK or authorized by
SUNSYNK. We do not undertake any consequences or related responsibility because of violation of safe-
ty operation or violation of design, production, and equipment safety standards.
Keep out of reach of children, animals,
and insects. Li-ion Battery.
Rechargeable. Charging and Discharging.
Direct Current. Product exposure.
Follow the indicated temperatures.
V DC 48 V
230V
15.70 A
BATTERYINPUT
Battery Discharge Voltage, Battery
Discharge Current, Input Voltage Type,
Battery Discharge Power.
Contact the supplier within 24 hours
if there is anything wrong. In case of
leakage contact with eyes or skin, imme-
diately clean with water and seek help
from a doctor.
Do not dispose the device, accesso-
ries, and packaging with regular waste.
Follow local ordinances or contact the
manufacturer for disposal guidance.
The UKCA marking is used for products
placed on the market in Great Britain
(England, Scotland and Wales). The
UKCA marking applies to most products
for which the CE marking could be used.
CE mark is attached to the solar
inverter to verify that the unit follows
the provisions of the European Low
Voltage and EMC Directives.

SUNSYNK-L3.0 | User Manual6
Handling
The battery should only be used as instructed.
DO NOT use the battery if it seems broken or damaged.
The battery is non-user-serviceable and should not be opened for repair.
Handle the battery with care when installing or transporting it.
Chemicals should not be used to clean the battery.
DamagedBattery
A damaged battery should not be used and should be returned to Sunsynk or properly discarded via a recy-
cling facility. Leaking electrolytes can cause skin irruption and chemical burns, so contact should be avoided.
Eye Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper
and lower eyelids. Get medical aid.
Skin Remove contaminated clothes and rinse skin with plenty of water or shower for 15
minutes. Get medical aid.
Inhalation Remove from exposure and move to fresh air immediately. Use oxygen if available.
Ingestion Give at least two glasses of milk or water. Induce vomiting unless the patient is
unconscious. Call a physician.
SPECIFICATIONSANDFUNCTIONS
DimensionsandWeigh
SUNSYNK-L3.0 dimensions are presented below:
SUNSYNK-L3.0
Depth 145mm
Width 440mm
Height 520mm
Weight (Approx.) 30kg

SUNSYNK-L3.0 | User Manual7
BasicSystemArchitecture
SUNSYNK-L3.0 dimensions are presented below:
Contact our customer service or an accredited seller for precise information about application cases of the
SUNSYNK-L3.0 battery.

SUNSYNK-L3.0 | User Manual8
TECHNICALDATA
Model SUNSYNK-L3.0
Main Parameter
Battery Chemistry Lithium Ferro Phosphate (LifePO4 or LFP)
Capacity 60 Ah
Scalability Max. 4 pcs in parallel (12kWh)
Nominal Voltage 51.2 V
Operating Voltage 43.2~57.6 V
Energy 3.07 kWh
Usable Energy [1] 2.76 kWh
Charge/Discharge
Current
Recommend [2] 30 A
Max. [2] 60 A
Peak (2mins,25ºC) 75 A
Other Parameter
Recommend Depth of Discharge 90%
Dimension (W/H/D) 440*520*145 mm (don’t include Circuit Breaker, terminals
and hanging boards)
Weight Approximate 30 kg
Master LED Indicator 5 LED (SOC 20%~100%)
3 LED (working, alarming, protecting)
IP Rating of Enclosure IP65
Working Temperature Charge: 0°C~+55°C (optional heating, -20°C~+55°C)
Discharge: -20°C~+55°C
Storage Temperature -20ºC ~ +35ºC
Humidity 5% ~ 95%
Altitude ≤2000m
Cycle Life ≥6000 (25±2ºC, 90%DOD, 0.5C/0.5C, 70%EOL)
Installation Wall Mounted (Support 19-inch standard cabinet)
Communication Port CAN2.0, RS485
Life Cycle Power During Warranty Period [3} 10MWh@70%EOL
Certication IEC62619, CE, UK, CEC, UN38.3
[1] DC Usable Energy, test conditions: 90% DOD, 0.5C charge & discharge at 25° C. System usable energy may
vary due to system conguration parameters.
[2] The current is aected by temperature and SOC.
[3] The warranty is due whichever reached rst of warranty period or energy throughout.

SUNSYNK-L3.0 | User Manual9
EQUIPMENTINTERFACEINSTRUCTION
This section details the front and side panel of the interface functions. Following, you will nd the SUN-
SYNK-G5.3 front side illustration.
1. Battery Indicators 7. Parallel Communication Port OUT
2. Parallel Communication Port IN 8. Battery Negative -
3. PCS 9. Battery Positive +
4. Power Switch 10. Grounding Bolt
5. Battery Indicators 11. DC 80A Circuit Breaker
6. Pressure Release Valve
Interface Symbol Description and Instructions
Power Switch Power Switch to turn ON/OFF the whole battery BMS standby, no power
out- put.
RUN RUN LED: 1 green LED lighting to show the battery running status, long
lighting when charging and ash when discharging
Alarm Alarm LED: 1 yellow LED lighting to show the battery has an alarm. It ash-
es in alarm conditions and ashes long lighting if the equipment fails.
Error Error LED: 1 red LED lighting to show the battery is under protection.
SOC SOC LED: 5 green LEDs to show the battery’s current capacity. Each light
rep- resents 20% of the capacity.
PCS Inverter communication terminal: (RJ45 port) follow the CAN protocol (baud
rate: 500K), used to output battery information to the inverter.

SUNSYNK-L3.0 | User Manual10
The following table presents the Led indication denition:
Condition RUN ALM Error SOC1 SOC 2 SOC 3 SOC 4 SOC 5
Power o O
Charge
Blink
Blink if Alarm
Exists
O
Show SOC & highest LED blink
Discharge or
Idle O
Show SOC & long bright
Alarm
Blink
O
Other LEDs are same as above.
System error/
Protect
Upgrade Blink Fast
Critical Error Blink Slow
The following table presents the denition for PCS, IN, and OUT connection pins. All use the same pin num-
ber sequence shown in the next image:
Pin No. PCS Port Denition IN Port Denition OUT Port Denition
1485-B CANL CANL
2485-A CANH CANH
3 -- DI+ DO+
4CANH DI- DO-
5CANH DI- DO-
6 -- DI+ DO+
7485-A CANH CANH
8485-B CANL CANL
Protection and Alarm Management and Monitor
Charge/Discharge End Intelligent Protect Mode
Charge Over Voltage Intelligent Charge Mode
Discharge Under Voltage Protect, Charge Current Limit
Charge/Discharge Over Current Intelligent Protect Mode
High/Low Temperature(cell/BMS) Intelligent Protect Mode
Short Circuit Protect
Interface Symbol Description and Instructions
IN
Parallel Communication Terminal: (RJ45 port) Connect “out”.
The terminal of the Previous battery for communication between multiple
parallel batteries.
OUT Parallel Communication Terminal: (RJ45 port) Connect “IN”. The terminal of
the Next battery for communication between multiple parallel batteries.
DC 80A
Circuit Breaker Over current protection, cut o the power supply.
Grounding Bolt Used for the battery connecting to the PE.

SUNSYNK-L3.0 | User Manual11
INSTALLATION
Check if you received all the items listed below. Ensure that nothing is damaged in the package.
PartsList
Battery Pack x1
Stainless Steel Mounting
Screws M6*16x4
Flange Nuts M6 x4
0.6 mm Ground Wires x1
Hanging Board x1
Stainless Steel Anti-Collision
Bolt M6x100
x4
Hanging Board Mounting
Screws M6*10 x8
User Manual x1
The location of the battery should follow the operating temperature range and IP rating specied in the
Specication section of this manual. The SUNSYNK-L3.0 is designed for outdoor use (IP65). But please avoid
direct sunlight, rain exposure, and snow laying up during installation and operation. Although the batteries
run at a low temperature, proper airow around the batteries is recommended.
InstallationPrecaution

SUNSYNK-L3.0 | User Manual12
When installing the set, the following conditions should be met:
DO NOT install the product in a completely closed area with no air-conditioning. It can overheat and
cause a re.
DO NOT place in direct sunlight or near a source of heat. This can cause deformation, a breakdown, or a
re. Pay extra attention when you place the system near windows.
The battery must not be set where excessive oil, smoke, steam, moisture or dust is contained in the air.
Ensure that the batteries are installed in a clean environment with minimal dust.
Avoid installing the set near the ocean. If unavoidable, appropriate air ltration should be used to pre-
vent salt air from in contact with the batteries.
For proper air circulation to dissipate heat, allow a clearance of approximately 30 cm to the sides of the
battery.
DO NOT install the set near heat sources.
DO NOT install the SUNSYNK-L3.0 in areas where highly ammable materials are stored.
DO NOT install the SUNSYNK-L3.0 in potentially explosive areas.
DO NOT install the SUNSYNK-L3.0 in the cool air directly.
DO NOT install higher than an altitude of about 2000 meters above sea level.
DO NOT install the SUNSYNK-L3.0 in an environment of precipitation or humidity (>95%).
Make sure that the installation location meets the following conditions:
The area is entirely waterproof.
The wall is at and level.
There are no ammable or explosive materials.
The ambient temperature is within the range of -20°C to 50°C.
The temperature and humidity are maintained at a constant level.
There is minimal dust and dirt in the area.
The distance from any heat sources is more than 2 meters.
The distance from the air outlet of the inverter is more than 0.5 meters.
Do not cover or wrap the battery case or cabinet.
Do not place the SUNSYNK-L3.0 in the children's or pet's reach area.
The installation area shall avoid direct sunlight.
The battery module has no mandatory ventilation requirements, but please avoid installation in conned
areas. The aeration shall avoid high salinity, humidity, or temperature.
SelectingtheMountingArea
WARNING
If the ambient temperature is outside the operating range, the battery pack stops operating to pro-
tect itself. The optimal temperature range for the battery pack is between 15°C and 35°C.
Frequent exposure to harsh temperatures may deteriorate the performance and life of the battery
pack.

SUNSYNK-L3.0 | User Manual13
The following tools are required to install the battery:
ToolsandSafetyGearsNecessary
WARNING
Use adequately insulated tools to prevent accidents tale electric shocks or short circuits.
If insulated tools are not available, cover the entire exposed metal surfaces of the available tools,
except their tips, with electrical tape.
We recommend wearing the following safety gear when dealing with the battery pack installation or mainte-
nance.
Safety Gloves Safety Goggles Safety Shoes
Torque Screwdriver Phillips Screwdriver Hexagon Wrench
Phillips Screwdriver Slotted Screwdriver Torque Wrench
Tape Measure Driller Pencil or Marker

SUNSYNK-L3.0 | User Manual14
Fix the wall-mounted battery on the wall-mounted battery after xing the hanging plate to the wall with stain-
less steel anti-collision bolts.
MountingtheBattery
WARNING
Risk of injury (Heavy Object).
Remember that this storage system is heavy (46kg), so users must carefully handle the unit during
installation, especially when mounting or removing it from the wall.
To install the SUNSYNK-L3.0 battery, follow the steps:
Install the SUNSYNK-L3.0 battery on the wall, as shown in the previous section.
Connect the communication cable to the inverter. The rst battery communication cable should connect
to the inverter for parallel installation. In contrast, the second battery should connect to the rst one.
The same pattern should be used if more batteries are installed in parallel.
Connect the power cables from the battery to the inverter terminals. IMPORTANT, the battery DC+ ter-
minal should connect to the inverter DC+ terminal, and the battery DC- terminal should connect to the
inverter DC- terminal. If a second battery is installed in parallel, its DC+ and DC- terminals should con-
nect to the rst battery's DC+ and DC- terminals. The same pattern should be used if more batteries are
installed in parallel.
Turn on all battery power in turn.
The following image illustrates how to connect batteries to the inverter in parallel.
Installation

SUNSYNK-L3.0 | User Manual15
After installing and connecting the battery, check the following points:
Usage of positive and negative cables.
Connection of the positive and negative terminals.
All the bolts are tightened.
Cables xation and appearance.
The setting of the dialling address.
The installation of the protecting cover.
ConnectionInspection
After completing installation, wiring, conguration, and checking all the connections, you can start the bat-
tery. Press the power button to activate the battery when the connections are correct. If the green working
light on the front panel ashes, the battery system will be operating correctly.
StartingtheSUNSYNK-L3.0Battery
Many symbols are present with the battery product and used materials to install it. Next, a list of symbols
and their meanings is presented.
SymbolExplanation

SUNSYNK-L3.0 | User Manual16
INSPECTION,CLEANINGANDMAINTENANCE
The SUNSYNK-L3.0 battery is not fully charged when shipped. We recommend installing within three
months after arrival;
During the maintenance process, do not re-install the batteries in the SUNSYNK-L3.0. Otherwise, the
performance of the product will be reduced;
It is forbidden to dismantle any battery in the SUNSYNK-L3.0, and it is not permitted to dissect the bat-
tery;
After the SUNSYNK-L3.0 battery is over-discharged, we recommend charging the battery within 48 hours.
The SUNSYNK-L3.0 can also be charged in parallel. After connecting the batteries in parallel, the charger
needs to connect to the output port of any SUNSYNK-L3.0.
Never attempt to open or dismantle the battery! The inside of the battery does not contain serviceable
parts.
Disconnect the SUNSYNK-L3.0 Li-Ion battery from all loads and charging devices before performing
cleaning and maintenance activities
Place the enclosed protective caps over the terminals before cleaning and maintenance activities to
avoid the risk of contacting the terminals.
GeneralInformation

SUNSYNK-L3.0 | User Manual17
Inspect for loose and/or damaged wiring and contacts, cracks, deformations, leakage, or damage of any oth-
er kind. If you nd any damage to the battery, it must be replaced.
Do not attempt to charge or use damaged batteries.
IMPORTANT: Do not touch the liquid from a ruptured battery.
Regularly check the battery’s state of charge. Lithium Iron Phosphate batteries will slowly self-discharge when
not in use or whilst in storage. Consider replacing the battery with a new one if you note either of the follow-
ing conditions:
The battery run time drops below 70% of the original run time.
The battery charge time increases signicantly.
Inspection
If necessary, clean the Li-Ion battery with a soft, dry cloth. Never use liquids, solvents, or abrasives to clean
the Li-Ion battery.
Cleaning
The Li-Ion battery is maintenance-free. Charge the battery to approximately > 80% of its capacity at least
once every year to preserve the battery’s capacity.
Maintenance
The battery product should be stored in a dry and cool environment. Generally, the maximum storage
period at room temperature is six months. When the battery is stored for over six months, we recommend
checking the battery voltage. If the voltage exceeds 51.2V, you can continue storing the battery. In addition,
you should check the voltage at least once a month until the voltage is lower than 51.2V. When the battery's
voltage is lower than 51.2V, it must be charged according to the charging strategy.
Storage
TROUBLESHOOTING
To determine the status of the battery system, users must use additional battery status monitoring software
to examine the protection mode. Refer to the installation manual about using the monitoring software. Once
the user knows the protection mode, refer to the following table for solutions and additional information.
Fault Type Fault Generation
Condition Possible Causes Troubleshooting
BMS fault
The cell voltage sam-
pling circuit is faulty.
The cell temperature
sampling circuit is
faulty.
The welding point for cell
voltage sampling is loose or
disconnected.
The voltage sampling terminal
is disconnected.
The fuse in the voltage sam-
pling circuit is blown.
The cell temperature sensor
has failed.
Replace the battery.
The charging strategy is as follows: discharge the battery to the cut-o voltage with 0.2C (20A) current,
charge with 0.2C (20A) current for about 3 hours. Keep the SOC of the battery at 40%-60% when stored.
When the battery is stored, it should be kept away from explosive and ammable areas, and ignition or
high-temperature sources should be kept distant from the battery.

SUNSYNK-L3.0 | User Manual18
Fault Type Fault Generation
Condition Possible Causes Troubleshooting
Electrochemical
cell fault
The voltage of the cell
is low or unbalanced.
Due to large self-discharge, the
cell over-discharges to below
2.0V after long-term storage.
External factors damage the
cell, and short circuits, pin-
pricks, or crushing occurs.
Replace the battery.
Over-voltage
protection
The cell voltage is
greater than 3.65 V in
the charging state.
The battery voltage is
greater than 58.4 V.
The bus-bar input voltage ex-
ceeds the standard value.
Cells are not consistent. The
capacity of some cells deteri-
orates too fast, or the internal
resistance of some cells is too
high.
Contact local engineers to
rectify the fault if the battery
cannot be recovered due to
protection against abnormal-
ity.
Under voltage
protection
The battery voltage is
less than 40V.
The minimum cell
voltage is less than
2.5V
The mains power failure has
lasted for a long time.
Cells are not consistent. The
capacity of some cells deteri-
orates too fast, or the internal
resistance of some cells is too
high.
Contact local engineers to
rectify the fault if the battery
cannot be recovered due to
protection against abnormal-
ity.
Charge or
discharge
high-tempera-
ture protection
The maximum cell
temperature is great-
er than 60oC
The battery ambient tempera-
ture is too high.
There are abnormal heat sourc-
es around.
Contact local engineers to
rectify the fault if the battery
cannot be recovered due to
protection against abnormal-
ity.
Charge low-tem-
perature protec-
tion
The minimum cell
temperature is less
than 0ºC
The battery ambient tempera-
ture is too low.
Contact local engineers to
rectify the fault if the battery
cannot be recovered due to
protection against abnormal-
ity.
Discharge
low-temperature
protection
The minimum cell
temperature is less
than -20ºC
The battery ambient tempera-
ture is too low.
Contact local engineers to
rectify the fault if the battery
cannot be recovered due to
protection against abnormal-
ity.
After checking the above data, please send it to our personnel service. Thus, we will evaluate your problem
and reply with the best solution.

SUNSYNK-L3.0 | User Manual19
BATTERYRECOVERY
Aluminium, copper, lithium, iron, and other metal materials are recovered from discarded LiFePO4 batter-
ies by the advanced hydro-metallurgical process. The process can reach a recovery eciency of up to 80%.
Next, the process steps are presented.
RecoveryProcessandStepsofCathodeMaterials
Aluminium foil as a collector is amphoteric metal. Firstly, it is dissolved in NaOH alkali solution to make alu-
minium enter the solution in the form of NaAlO2. After ltration, the ltrate is neutralized with a sulphuric
acid solution and precipitated to obtain Al (OH)3. When the pH value is above 9.0, most of the aluminium
precipitates, and the obtained Al (OH)3 can reach chemical purity after analysis.
The lter residue is dissolved with sulphuric acid and hydrogen peroxide. Thus, lithium iron phosphate en-
ters the solution in the form of Fe2 (SO4) 3 and Li2SO4, separated from carbon black and carbon coated on
the surface of lithium iron phosphate. After ltration and separation, the pH value of the ltrate is adjusted
with NaOH and ammonia water. First, iron is precipitated with Fe (OH) 3, and the remaining solution is pre-
cipitated with saturated Na2CO3 solution at 90ºC.
Since FePO4 is slightly dissolved in nitric acid, the lter residue is dissolved with nitric acid and hydrogen per-
oxide, which directly precipitates FePO4, separates impurities such as carbon black from the acid solution,
leaches Fe (OH) 3 from lter residue respectively, and precipitates Li2CO3 with saturated Na2CO3 solution at
90ºC.
RecoveryofAnodeMaterials
The recovery process of anode materials is relatively simple. After the anode plates' separation, copper's
purity can be more than 99%, which can be used to rene electrolytic copper further.
RecoveryofDiaphragm
The diaphragm material is mainly harmless and has no recycling value.
ListofRecyclingEquipment
Automatic dismantling machine, pulverize, wet gold pool, etc.

SUNSYNK-L3.0 | User Manual20
TRANSPORTATIONREQUIREMENTS
Transport the battery products just after packaging. It can be transported using cars, trains, and ships. Avoid
exposing the packaging to severe vibration, impact, or extrusion during transportation. Also, avoid exposing
the packaging to direct sunlight or rain.
Always check all applicable local, national, and international regulations before transporting Lithium Iron
Phosphate batteries.
In some instances, transporting end-of-life, damaged, or recalled batteries may be especially limited or pro-
hibited.
The transport of the Li-Ion batteries falls under hazard class UN3480, class 9. The battery falls within packag-
ing group PI965 Section I for transport over water, air, or land.
Use Class 9 Miscellaneous Dangerous Goods and UN Identication labels for transportation of lithium-ion
batteries, which are assigned Class 9. Refer to relevant transportation documents.
The Class 9 Miscellaneous Dangerous Goods and UN Identication Label is presented next: