CFE CFE-5A User manual

Residential ESS Lithium-ion Battery
CFE-5A User Manual
Published: 0418, 2023
Version 1.0

About CFE RESS Li-ion Battery
CFE-5A can be installed in Parallel, more attention should be
paid to the DIP and address selection following with part 5.3.2.
About this Manual
The Manual is intended for the CFE-5A Residential ESS, the
hybrid inverter and any other equipment are not included.
2023 CF Energy Co., Ltd. All rights reserved.
CF ENERGY CO.，LTD. mentioned later is abbreviated as CFE.
This document is provided “as-is.” Information in this document, including URL and other
Internet Web site references, may change without notice.

Contents
1 Safety Instructions ...................................................................................................................................1
1.1 Important Safety Instructions ............................................................................................. 1
1.2 Warnings in this Document..................................................................................................1
1.3 Battery handling guide ..........................................................................................................2
1.4 Response to emergency situations.................................................................................. 2
1.5 Installers................................................................................................................................... 3
1.6 Scrap battery .......................................................................................................................... 4
1.7 Customer careline ..................................................................................................................4
2 Product Introduction ...............................................................................................................................4
2.1 Technical data .........................................................................................................................4
2.2 Indicator and ports ................................................................................................................ 5
2.3 Communication interface plat ........................................................................................... 6
2.4 How it works ............................................................................................................................7
2.5 Feature ..................................................................................................................................... 7
3 Guidance for batteries during shipment............................................................................................ 8
4 Installation Prerequisites.......................................................................................................................8
4.1 Installation location............................................................................................................... 8
4.2 Installation process.............................................................................................................. 9
4.3 Installation materials ............................................................................................................ 9
4.4 Tools....................................................................................................................................... 10
4.5 Safety instruments ............................................................................................................. 10
4.6 Communication cable........................................................................................................ 11
4.7 Storage...................................................................................................................................11
5 Battery Installation ................................................................................................................................ 12

5.1 Package items.......................................................................................................................12
5.2 Checks before installation ................................................................................................ 12
5.3 Installation of the battery..................................................................................................12
5.4 Cable connections .............................................................................................................. 18
6 Commissioning.......................................................................................................................................18
6.1 Commissioning battery ...................................................................................................... 18
6.2 Shutting down battery....................................................................................................... 19
Warranty of Residential ESS................................................................................................................... 20
RED Declaration of Conformity (DoC)..................................................................................................24

1
1 Safety Instructions
1.1 Important Safety Instructions
This manual contains important instructions for:
CFE-Residential ESS Lithium-ion Battery product
This manual must be followed when installing and using this product.
The product is designed and tested in accordance with international safety requirements
IEC 62619/IEC 62040/UL1973, but as with all electrical and electronic equipment, certain
precautions must be observed with regard to product installation and/or operation. To
reduce the risk of personal injury and ensure safe installation and manipulation of the
product, it is required to carefully read and follow all instructions, cautions and warnings in
this manual.
1.2 Warnings in this Document
A warning describes a possible hazard to equipment or personnel, which calls attention to a
procedure or practice. Improper enforcement or compliance with warnings could result in
damage or destruction of part or all of the equipment and/or other equipment connected to
the equipment or personal injury.
Symbol
Description
Beware of risk of electric shock
Heavy enough may cause severe injury
Keep the battery away from open flame or ignition sources
Keep the battery away from children
Do not dispose of the product with household waste
Recycling
Read this manual before installation and operation

2
For safety reasons, installers are responsible for familiarizing themselves with the contents
of this manual and all warnings before performing installation.
If the battery is not used for more than 6 months from the production date, it shall be
charged once. The failure caused by the overdue failure to perform the standard operation
is not within the scope of warranty.
1.3 Battery handling guide
Use the battery pack only as directed.
1.4 Response to emergency situations
The CFE-Residential ESS Lithium-ion Battery is designed with multiple safety strategies to
prevent hazards resulting from failures. However, Cannot guarantee their absolute safety
for uncertain situations.
1.4.1 Leaking batteries
If the battery pack leaks electrolyte, direct contact with the leaking liquid or gas must be
avoided. Contact with electrolyte may cause skin irritation and chemical burns due to its
corrosiveness. If one is exposed to the leaked substance, the following actions should be
taken:
Inhalation: Evacuate the contaminated area, and seek medical attention immediately.
Eyes contact: Rinse eyes with flowing water for 15 minutes, and seek medical attention
immediately.
Skin contact: Wash the affected area thoroughly with soap and water, and seek medical
attention immediately.
Ingestion: Induce vomiting as soon as possible, and seek medical attention immediately.
1.4.2 Fire
In case of a fire, make sure that an ABC or carbon dioxide extinguisher is placed nearby and
do not extinguish the fire by water.
WARNING
The battery pack may catch fire when heated above 130°C.
If a fire breaks out where the battery is installed, please take the following actions:

3
1) Extinguish the fire before the battery catches fire.
2) If the battery has caught fire, do not try to extinguish the fire, and evacuate
people immediately.
Do not approach in case of any contact with poisonous gases once the battery
catches fire.
1.4.3 Wet battery
If the battery is wet or submerged in water, do not try to access it. It’s proper to contact
customer careline or your distributor for technical assistance.
1.4.4 Damaged battery
If the battery is damaged, please contact customer careline or your distributor for
appropriate countermeasures as soon as possible, because damaged batteries are
dangerous and must be handled with extreme caution. Damaged batteries are not suitable
for use and may pose a danger to people or property. If the battery seems to be damaged, it
also should be returned to your distributor.
CAUTION
Given the high possibility of damaged batteries exporting electrolyte or flammable
gas, the correct action is to contact your distributor for advice and information
immediately. Such cases will be addressed within 48h.
1.5 Installers
CFE-Residential ESS Lithium-ion Battery is suggested to be installed by skilled workers or
electricians. A skilled worker is defined as a person who has received professional training
and qualified electrician or possesses all of the following skills and experience:
Knowledge of the functional principles and operation of on-grid energy storage
systems.
Knowledge of the dangers and risks associated with installing and using electrical
devices and acceptable mitigation methods.
Knowledge of the installation of electrical devices.
Knowledge of adherence to this manual and all safety precautions and optimal
practices.

4
1.6 Scrap battery
For scrap battery, please treat with local laws or regulations to recycle.
1.7 Customer careline
The contact information for technical assistance is given as below. This phone number is
available 24/7 and we will register your problems and provide reasonable solutions within
48h.
Customer careline [phone]
2 Product Introduction
2.1 Technical data
Model CFE-5A
Total Energy* 5.1 kWh
Usable Energy(DC)
Max. Discharge Powe
4.3 kWh
r 5.0 KW
Rated Capacity 100 Ah
Voltage 48~56 Vd.c
Nominal Voltage 51.2 Vd.c
Operating Condition Indoor
Charge Operating Temperature 0~45℃
Discharge Operating Temperature -10~55℃
Dimensions (W*D*H) 442*500*133 mm
Weight 45±0.5 kg

5
IP Rating IP 20
Protective Class I
Parallel or Series Support 8 Parallel
Relative Humidity (RH) 0~95% (No condensed water)
Cooling Type Ambient cooling
Case Material Metal
Color
Installatio
White
nCabinet, Wall Mounting, Ground
Installation
Warranty
Communicatio
5Years
n CAN/RS485
Protection Mode Triple Hardware Protection
Battery Protection
Over-Current/ Over-Voltage/ Short
Circuit/ Under-Voltage/ Over
Temperature
Safety Certificate UN3480
Testing Conditions Based on Temperature 25℃at The Beginning of Life.
Total Energy/Usable Energy Measured Under Specific Conditions From 0.2C CC/CV
2.2 Indicator and ports
The four green lights on the front of the battery display the SOC status of the battery, and
the other red and green lights indicate the operating status of the battery.

6
Table 2-1 Designations on the battery
Item
Designatio
n
Definition
1
Running
Battery normally working without fault
2
Fault
Battery is in a warning state, see troubleshooting in Chapter
8
3
SOC
Each green light represents 25% of the battery capacity.
2.3 Communication interface plat
SW1
DIP switch selection for CAN or RS485
SW2
Resistance for communication and DIP switch for parallel/series
connection

7
SW3
Switch for battery’s address selection
SW4 & SW5
Communication for battery or master battery with inverter
2.4 How it works
Morning
Afternoon
Optimized self-consumption will be
achieved. ESS is used to store excess
energy produced by PV system.
Extra energy will be fed into the grid
when ESS is fully charged and system
has already reached its
self-consumption requirement.
Evening
Night
ESS will power the AC load at sunset.
If the ESS capacity is insufficient to
meet self consumption requirement,
electricity will be obtained from the grid.
2.5 Feature

8
CFE-Residential ESS Lithium-ion Battery is characterized with:
Energy storage unit: This battery is suitable for PV solar system compatibility.
Battery management system (BMS): The battery’s built-in BMS monitor prevents
the battery from running outside its design limitations. See Troubleshooting in
Chapter 8.
Monitor: The battery’s BMS built-in WIFI module can help check the battery running
information in the mobile phone.
Expandability: The battery capacity can be increased by adding another battery of
the same batch and specification. See Cable Connections in Section 5.4.
3 Guidance for batteries during shipment
1) Cartons that have been crushed, punctured, or torn in such a way that contents
are revealed shall be set aside in an isolated area and inspected by a skilled person.
If the package is deemed to be not shippable, relevant contents shall be promptly
collected and segregated. Meanwhile, it is required to contact the consignor or
consignee.
2) The DC circuit of Residential ESS has been disconnected before outgoing.
3) A precautionary label must be affixed to the shipping carton to alert individuals that
the battery within the package has been disconnected; otherwise, the battery
should not be transported.
4) We have conducted comprehensive tests of our equipment distributed around the
world to ensure safety for shipping transport. These products shall be handled with
care and immediately inspected if visibly damaged. It needs to contact with
customer careline in case of any visible damage to cartons to confirm whether the
battery could be used safely or not.
4 Installation Prerequisites
4.1 Installation location
Make sure that the installation location meets the following conditions:
The building is designed to withstand earthquakes.
Far away from the sea to avoid salt water and humidity.
The floor is flat and level.
No flammable or explosive materials nearby.
Optimal ambient temperature is between 15℃and 30°C.

9
Temperature and humidity stay at a constant level.
Minimal dust and dirt in the area.
No corrosive gases present, including ammonia and acid vapor.
The Residential ESS is rated at IP20, so the battery could be installed indoors.
If the ambient temperature exceeds the operating range, battery will protect itself
by shutting down. The optimal operating temperature of the battery is 15°C to
30°C. Frequent exposure to severe operating conditions would exacerbate the
performance and lifetime of the battery.
4.2 Installation process
The battery should be installed according to the following flow chart.
4.3 Installation materials
Following installation materials should be prepared by installers.

10
Power cable
Communication cable
Earth wire
Bipolar external isolators. When two or more battery systems are connected in
parallel, each of them shall have a bipolar isolator.
NOTICE
Make sure that the cross-sectional area of charging cables is 25 to 35 mm2.
A breaker between battery and inverter is recommended to install, and its min.
current should be over 150A or comply with local regulations.
4.4 Tools
To install the battery pack, those following tools are probably required:
Phillips
screwdriver
Torque wrench
Cable crimper
Wire clamp
Voltmeter
Tape measure
Drill
Flat-head
screwdriver
In order to protect the safety of operators and installers, it is necessary to select and
employ suitable tools and measuring instruments that are certified for precision and
accuracy.
4.5 Safety instruments
When dealing with the battery, following safety gears should be equipped. Installers must

11
meet relevant requirements of IEC 60364 or domestic legislations and other relevant
international standards.
Insulated glove
Safety goggles
Safety shoes
4.6 Communication cable
If needed, the network cable should be made as shown in that diagram. But the network
cable between battery and inverter should be produced following the definition of inverter.
If available,a LAN cable tester can be used to check whether the cable is faulty.
4.7 Storage
If the battery is not to be installed immediately, it should be removed from operation. It is
secure and proper to be stored in an appropriate location, if long period storage is needed.
Instructions for storage are:
Do not stack more than 8 battery boxes.
The temperature of battery stored is recommended in the range of 0°C to 45°C.
Do not expose to water
The ESS box should be upright and not stacked upside down when being stored.
If the ESS needs to be stored over 3 months, the DC circuit of battery is suggested to be
disconnected. Otherwise, the battery would discharge at a minimum rate and capacity
degrades with storage time. Generally, the battery self-consumption is less than 5w. And, if
the battery is stored over 6 months, it is suggested to connect the battery with inverter for
system commissioning.

12
5 Battery Installation
5.1 Package items
These items are included in the package.
Battery*1
Cardboard*1
User Manual
5.2 Checks before installation
Check the battery voltage.
WARNING
If this checking process is executed for any reason after the battery is fully installed,
make sure that the inverter is turned off or disconnected from battery while checking
the battery.
Press and hold the panel button for about 4s, release it after the two
LED lights on, and then measure the voltage at the terminal interface
with a voltmeter. If the voltage is lower than 44 V, do not use the
battery and contact customer careline or your distributor.
5.3 Installation of the battery
NOTICE
The symbol is located on the front of battery. For parallel or series
connection, the earth wire must be installed.
Apply silica gel or paint around the earth terminal after the earth cable
is connected.

13
5.3.1 Connect with 51.2Vdc Inverter
To prevent the battery from moving, make sure the battery is properly installed.
NOTICE
If the battery is installed above the floor or on a platform, make sure that the wall or
platform is capable of supporting the battery’s weight.
5.3.1.1 Wall mounting
NOTICE
1.Use the positioning cardboard to determine the
bracket mounting place.
2.Drill holes in the wall for the M8 expansion screw
anchors, of which depth should be at least 50 mm.
Tighten the screws to a torque around 2.5 N∙m.
3.Fasten the battery to bracket fastening hole with M6
screws with 2.0N∙m roughly.
4.Meanwhile, two or four batteries could be installed by
these brackets.
Note: if more than 4 batteries are to be installed, a cabinet is recommended to be selected

14
for battery stability.
The installed location shall be restricted access or installed in a cabinet which provides
protection for pets and children.
5.3.1.2 Ground installation
Meanwhile, CFE-Residential ESS Lithium-ion Battery also could be installed on floor. The
installation steps are as follows:
NOTICE
1. Fix the holders to battery’s mounting holes one by
one.
2. If more power and energy are needed, 2 to 4
batteries could be installed in one stack.
3. If the number of batteries remains at the range of
5 to 8, a cabinet is recommended to be selected.
5.3.2 Address selection of Master and Slave Battery (Batteries) connection

15
For series connection, please make sure the SW2 DIP switch is selected as this type.
WARNING
Please make sure the SW2 DIP switch is selected correctly. If the battery is connected
in parallel mode, and SW2 DIP8 is selected at ON position, it probably leads to serious
faults, even dangerous. Meanwhile, if battery is connected in series mode, and SW2
DIP8 is selected at OFF status, serious faults and hazards probably occur.
Connected
battery number
Group
Set of SW2
Parallel connection
Address Set (SW3)
1
—
13
1
2
Master
13
2
Slave
1
1
3
Master
13
3

16
Slave 1
0
1
Slave 2
1
2
4
Master
13
4
Slave 1
0
1
Slave 2
0
2
Slave 3
1
3
5
Master
13
5
Slave 1
0
1
Slave 2
0
2
Slave 3
0
3
Slave 4
1
4
6
Master
13
6
Slave 1
0
1