PYTES E-BOX Series LFP Battery User Manual
- June 13, 2024
- Pytes
Table of Contents
- E-BOX Series LFP Battery
- Before Using
- Symbols
- Specifications
- Interface and protection functions
- Operating Environment
- Packaging, transportation, storage requirements
- Installation and configuration
- Communication
- Troubleshooting
- Warranty Card
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
User Manual
E-BOX Series
LITHIUM ION BATTERIES
Information Version: 3.5
Pytes E-BOX SERIES LFP Battery
User Manual
E-BOX Series LFP Battery
Dear customer,
This is your Pytes E-BOX SERIES LFP battery for home energy storage system. We
provide safe, well-designed and high-performance standard LFP battery packs
for you. The battery pack is compact, easy to install, free of maintenance and
is used as the basic building block of an energy storage system by connecting
in parallel. It is widely used in residential, small commercial and industrial
energy storage systems as well as Telecommunication stations. This manual
contains all the information necessary to install, use and maintain the LFP
battery. We kindly ask you to read this manual carefully before using the
product.
This manual is meant for the installers and the users of the LFP battery pack.
Only qualified skilled person (electrician) may install and perform
maintenance on the LFP battery pack. The boundaries of its use, as described
in this manual, should be kept in mind. This LFP battery pack may not be used
in medical or in aviation related applications. This LFP battery pack may not
be used for any purposes other than described in this manual. Using the LFP
battery pack for any other purpose will be considered improper use and will
void the warranty of the product. Pytes cannot be held responsible for any
damage caused by improper or incorrect use of the product. Read and understand
this manual completely before using the product. During the use of this
product, user safety instructions should always be followed to ensure the
safety of installers, users, service personnel and third parties. This is the
original manual, keep it in a safe location! Please consult
https://www.pytesgroup.com for the latest version of all manuals.
Shanghai Pytes Energy CO., LTD.
Add: No.3492 Jinqian Road, Fengxian District, Shanghai, China.
Website: https://www.pytesgroup.com
Email: ess_support@pytesgroup.com
Before Using
Read and understand the following instructions:
Warning
- This equipment may only be installed, operated and maintained by qualified skilled person(electrician).
- The local safety regulations and relevant operating procedures must be observed during the installation, operation and maintenance of the equipment, otherwise the equipment may get damaged.
The safety precautions mentioned in the manual are only the supplement to local safety regulations.
Caution
- Do not dispose of batteries in fire. The batteries may explode.
- Do not open or mutilate batteries. Released electrolyte can prove harmful to the skin and eyes. It may be toxic.
- A battery can present a risk of electric shock and burns by high short-circuit current.
- A malfunctioned battery can reach temperatures that exceed the threshold of contact surface.
The following precautions should be observed when working on batteries:
a) Disconnect the power and loads before connecting or disconnecting battery terminals;
b) Do not wear any metal objects including watches and rings;
c) Use tools with insulated handles;
d) Do not lay tools or metal parts on top of batteries;
e) Wear personal protective equipment.
f) Make sure the battery is well grounded.
Contact with any part of a poorly grounded or ungrounded battery can cause electric shock and burns by high short-circuit current.
The risk of such hazards can be reduced if conductive surroundings are removed by a skilled person during installation and maintenance.
Danger
- Keep the Li-ion battery away from water, dust and contamination, otherwise it may cause explosion or other harmful conditions that may even lead to personal injury.
- Do not short-circuit the Li-ion battery.
- Observe the positive(+) and negative(-) marks on the Li-ion battery and equipment and ensure correct use. Do not reverse the Li-ion battery.
- Do not dismantle, crush, puncture, open or shred the Li-ion battery.
- Before removing or reconnecting with the running system, the power must be off and the system should be shut down, otherwise there will be risk of electric shock.
- Do not expose Li-ion battery to heat or fire. In case of fire, please use dry powder fire extinguisher.
- Do not dismantle any part of the system without contacting PYTES or PYTES authorized technical engineers. System failure caused by such will not be covered by the warranty.
- Before operating inverter, make sure that all batteries have been started up.
Symbols
| Read the instruction manual before starting installation and operation.
---|---
| caution, do not dispose of batteries in a fire, the battery may explode.
| caution, a battery can present a risk of electric shock and burns by high
short-circuit current. do not short-circuit the Li-ion battery.
| caution, do not dispose the product with household wastes.
| danger, keep the Li-ion battery away from water, dust and contamination,
otherwise it may cause explosion or lead to personal injury.
| danger, do not place near open flame or flammable materials.
| danger, do not place at children or pet touchable area.
| Recyclable.
Specifications
Table 1-1 Battery Pack Specifications
| Battery Model | ESS48-2U-L | E-BOX 4850G | E-BOX 48100R |
|---|---|---|---|
| Chemistry | LFP | ||
| Nominal Voltage | 48V | 51.2V | |
| Voltage Range | 45V-54V | 47.5V-57.6V | |
| Nominal Capacity | 50Ah | 100Ah | |
| Nominal Energy | 2.4kWh | 5.12kWh | |
| Unit Dimension(LWH) | 44041089mm(2U) | ||
| 17.316.13.5 inch | 44045080mm(2U) | ||
| 17.317.73.2 inch | 440620117mm(2.6U) |
17.324.44.6 inch
Unit Weight| 25kg/55.1 lbs| 23.5kg/51.8 lbs| 51kg/112.5 lbs
Standard Charge/ Discharge Current| 25A| 50A
Maximum Charge/ Discharge Current| 50A| 100A
Peak Current| 102A@15s
Round-Trip Efficiency| ≥95%
Communication Protocol| RS232, RS485, CAN ℃(77℉)
Cycle Life| ≥6000cycles@0.5C/0.5C@ 25
Calendar Life| ≥10years
Operating Temperature| Charge: 0℃~ 45℃(32~113°F), Discharge: -10℃~
50℃(14~122°F)
Certificates| IEC62619/UN38.3/ KC/CE| IEC62619/UN38.3/CE| UL1973/IEC62619/CE
UN38.3/UL9540A/UL9540
Storage Temperature| Within 1month: -20~45°C(-4~113°F)
1-3months: -20~35°C(-4~95°F)
3-12months: 20~25°C(68~77°F)
1.1 Product standard configuration
| Items | Quantity | Specifications | Pictures |
|---|---|---|---|
| E-BOX SERIES | 1pc | LFP pack; including BMS,three interfaces |
(CAN/RS-485/RS232),
2 Link ports, LED power indicator and insulated coating metal case.| (For
reference only)
Power Cable [1]| 1set| Connect battery to battery;0.16m; Positive and
negative|
Communicate [2] Cable| 1pc| Connect battery to battery; CAN or RS485
communicate|
Earthing cable| 1pc| 1m|
Mounting Brackets[3]| 4pcs| Fix the battery on the wall|
[1] The power cable and battery are packaged separately in North American and
come in two different specifications:
0.16m, Both Amphenol Surlok Connector, or 2m, Amphenol Surlok Connector and M8
Connector.
Please refer to the actual receipt of goods.
[2] 0.35m in length for E-Box 48100R; 0.22m in length for ESS48-2U-L and E-Box
4850G
[3] Available in E-Box 48100R package only.
1.2 BMS function
| Protection and Alarm | Management and Monitor |
|---|---|
| Charge/Discharge End | Cell Balance |
| Charging over Voltage | Intelligent Charge algorithm |
| Discharging under Voltage | Charge/Discharge current Limit |
| Charge/Discharge Over Current | Capacity Retention Calculation |
| High/Low Temperature | Administrator Monitor |
| Short Circuit | Record |
| Power Cable Reverse |
Interface and protection functions
2.1 Battery front panel schematic
2.2 Components
| No. | Name | Label | Functions description |
|---|---|---|---|
| 1 | Ground | Grounding | |
| 2 | Power button | POWER | When switched to “ON”, the system can be activated by |
the “SW” key or external power supply; when switched to “OFF”, the system is
off.
3| Start Switch| SW| Press and hold this button for 1 second while the switch
key is “ON” to enter Start or Sleep mode
4| DIP Switch| ADD| Set according to inverter brand, see the match list
(appendix C)
5| Running Light| RUN| Green light. The light flashes when Standby. The light
is constantly on when charging. The light flashes when discharging.
Alarm Indicator| ALM| Red light. The light flashes when Alarming. The light is
continuously on when protected.
Capacity Indicator| SOC| A total of 6 green lights showing battery capacity,
each representing 16.7% of SOC.
6| External CAN Communication Port| CAN| Communication with external devices
7| External RS-485 Communication Port| RS485| Communication with external
devices
8| Cascade Terminals| Link 1/0| Connect PORT1 of the first battery to PORT0 of
next battery.
9| Power interface (negative)| “-“| Negative input and output interface
10| Power interface (positive)| “+“| Positive input and output interface
Operating Environment
- Battery operating environment requirements:
- Operating Temperature: -10℃ ~50 ℃(14~122°F)
- Relative Humidity: 20%-80%, no condensation
- Altitude: ＜4000m
- Site environment requirements: Keep away from heat source, avoid direct sunlight, no corrosive gas, no explosive gas, no insulating gas, no insulating conductive dust.
- Install in cabinet which shall not be opened without a tool.
- install in a restricted access area.
Packaging, transportation, storage requirements
4.1 Transportation
Always check all applicable local, national, and international regulations
before transporting an LFP battery.
During the transportation, protect the battery from severe vibration, shock or
squeeze, and from exposure to the sunlight and rain.
During the loading and unloading process, the battery should be handled
lightly and should be protected against falling, rolling and from being
pressed with heavy pressure.
4.2 Storage
Follow the storage instructions in this manual to optimize the lifespan of the
LFP battery during storage. If these instructions are not followed and the LFP
battery has no energy remained when it is checked, consider it to be damaged.
Do not attempt to recharge or use it. Replace it with a new LFP battery.
See previous storage temperature conditions.
Keep the battery SOC to 40%-60% during storage. The Self-discharge of the LFP
battery pack is 1-2% per month.
Disconnect the LFP battery from all loads and, if present, the charging
device.
Store the battery in a cool and dry place without direct sunlight.
Keep the battery pack away from corrosive substances, inflammable and
explosive material as well as hazardous gases.
Charge the LFP battery to more than 90% of its rated capacity for long-term
storage(＞6months). The battery needs to be recharged every 6 months to more
than 90% of the rated capacity.
Installation and configuration
5.1 Installation preparation
5.1.1 Safety Requirements
Only those who have been trained in the power system and have a good knowledge
of the power system are allowed to install the device. Always observe local
safety regulations and the safety requirements listed below during the
installation process.
Before installing or removing the battery, make sure that the system is
disconnected from any power source and that the battery device is turned off.
Distribution cabling needs to be handled carefully with reasonable protective
measures to avoid being touched during the maintenance and operation.
5.1.2 Checking the operating environment
The operating environment should meet the requirements described in Chapter 3,
“Operating Environment”. Otherwise, it needs to be adjusted and re-examined.
5.1.3 Tools
The tools that may be used are shown in Table 5-1.
Table 5-1 Tools
Tools
Screwdriver (Slotted, Phillips)| Multimeter
Wrench| Clip-on ammeter
Diagonal pliers| Insulating tape
Thermometer| Pliers
Anti-static wrist ring| Clip Pliers
Tapes| Strippers
5.1.4 Technical preparation
Electrical interface settings:
If the battery is connected to the user device directly, please check:
- Whether the DC charging interface of the energy storage inverter meets the charging voltage and current requirements in Table 1-1 Battery Pack Specifications.
- Whether the power of the electrical equipment matches the parameters listed in “Table 1-1 Battery Pack Specifications”;
Security check:
Fire-fighting equipment such as portable dry powder fire extinguishers should be available near the equipment. Do not place dangerous materials such as any flammable or explosive ones near the battery.
5.2 Unpacking
When the battery arrives at the installation site, it must be unloaded and
stored properly and prevented from the direct sunshine and rain. Before
installation, check if there is any component missing according to 1.1 product
standard configuration and check whether the box appearance is intact;
- Carefully handling the unpacking. Protect the insulated coating on the case surface;
- Check the LFP battery for damage after unpacking. If there is any damage, contact Pytes or your reseller.
5.3 The preparatory work
- Make sure the POWER buttons of all batteries are OFF.
- Ensure the charging voltage of power supply equipment is DC57.5±0.1V;
- All power supply should be off.
5.4 Installation
5.4.1 Install the battery
The E-BOX SERIES can be installed either vertically or horizontally. In this
chapter, instructions here are only for horizontal installation such as:
installation in a 19-inch cabinet. Vertical installation is similar.
All equipment must be placed steadily after installation.
5.4.2 Connect Ground cable
Unscrew the screw at the grounding hole on the front panel of the battery,
wrap the ground cable around the screw, and tighten it with a screwdriver.
Connect the other end of the ground cable to a reliable ground point.
Note: The grounding resistance should be less than 0.1Ω.
5.4.3 Connecting the power cable
Before connecting the power cable, connect and disconnect the cable to
identify the positive and negative terminal, then make a mark respectively.
After the cable is connected, measure whether there is a short-circuit or
reverse connection.
Select the correct line based on your load by referencing to the table below：
| AWG | Area | Standard Current | Max. Current |
|---|---|---|---|
| (kcmil) | (mm²) | （ A ） | （ A ） |
| 4 | 41.7 | 21.15 | 83.5 |
| 5 | 33.1 | 16.77 | 66.2 |
| 6 | 26.3 | 13.3 | 52.5 |
| 7 | 20.8 | 10.55 | 41.6 |
| 8 | 16.5 | 8.37 | 33 |
| 9 | 13.1 | 6.63 | 26.2 |
| 10 | 10.4 | 5.26 | 20.8 |
It should be > 6 AWG.
Connecting the power cables:
1)Power cable connection instructions of Single-Rack:
Single battery:
Connect the positive and negative poles of the battery to the positive and
negative terminal of the DC port of the energy storage inverter (or the
junction box) with a red and black cable respectively.
Multiple batteries (Max number 8):
The connection of several batteries is only permitted in parallel. Firstly,
connect the positive poles with the red cables, and connect the negative poles
with the black cables. Next connect the positive and negative poles of the
battery to the positive and negative poles of the DC port of the hybrid
inverter (a storage device or a junction box) with a red and black cable.
The standard charge/discharge curent of each single battery is the same no
matter how many batteries are paralleled refer to the “Table1-1”. Bus bar
should be applied when higher current (>100A) is needed for specific projects.
The capacity can be increased by connecting the batteries in parallel, but due
to the limitations of BMS and power cable, Max. 8 batteries can be connected
in parallel as a group without any additional kits and a bus bar should be
used for connecting them together.
Figure 5-1 Schematic diagram of battery connection
Note: The battery must be placed in a locked cabinet or room, and a 5cm
cooling gap is reserved when installing the battery, and the battery cabinet
should have a load capacity of more than 100kg
Warning: Batteries connected in series are forbidden, high voltage would
lead to hazard shock.
2)Power cable connection instructions of multi-Rack:
Connect the overall power cables of each rack to the convergence bus bar (or
junction box) in parallel, then connect to the energy storage inverter.
The length, thickness, material, and resistance of the cables connected in
parallel must be the same.
Note: When the cable is inserted into the positive and negative terminals
of the battery and you hear a “Click” sound, the cable is firmly connected.
Before pulling out the cable, press the small button next to the terminal.
When multiple batteries are connected in parallel, in order to reduce the
influence of the circular current, the overall positive and negative output
cables can be connected from different batteries to a Bus-Bar.
5.4.4 Connecting communication cables
Single battery: Choose port to be inserted according to the communication
protocol (RS485/CAN/RS232) between the battery and ESS inverter, then insert
the communication cables to the port;
Multiple batteries: The host and the slave communicate in cascade mode: one is the host and the rest are the slaves. Please refer to the following picture for the cascade connection. User needs to insert communication cables to relevant link ports between batteries and be aware that:
- The host Link Port 0 must be kept free;
- The end slave Link Port 1 must be kept free;
Note: The system may not be able to communicate if not followed the instruction.
5.4.5 Procedure of starting/Shut down the whole system
How to start and shut down the whole system correctly
Starting Procedure
Step 1. Switch on all power button.
Step 2.Only press SW button of master battery for 1 second
Make sure that all batteries have been started, then running the inverter. To avoid battery shock by the in-rush current of the large capacitors of the inverter. Shut down Procedure
Step 1.Only press SW button of master battery for 3 seconds
Step 2. Turn off all power button.
Wait for all the battery lights to go out before turning off the power button.
Table 5-2 LED indications
Battery status| Protection / Alarm / Normal| RUN|
ALM| Capacity LED| Descriptions
---|---|---|---|---|---
| | | | | | | |
Shut down| | OFF| OFF| OFF| OFF| OFF| OFF| OFF| OFF| All off
Power-on| Normal| ON| ON| ON| ON| ON| ON| ON| ON| All light on one second at
same time.
Standby| Normal| Blink 1| OFF| OFF| OFF| OFF| OFF| OFF| OFF| Indication
standby
| Alarm| OFF| Blink 3| OFF| OFF| OFF| OFF| OFF| OFF| Battery low voltage
Charging| Normal| Light| OFF| Base on capacity|
Alarm| Light| Blink 3
Protection| OFF| Light| OFF| OFF| OFF| OFF| OFF| OFF| Stop charging, protect
start
Discharge| Normal| Blink 3| OFF| Base on capacity|
Alarm| Blink 3| Blink 3
Protection| OFF| Light| OFF| OFF| OFF| OFF| OFF| OFF| Stop discharge, protect
start
Note: The blinking descriptions： Blink 1“0.3s on/3.7s off”; Blink 2 “0.5s on /0.5s off”; Blink 3“0.5s on / 1.5s off”; Blink 4“0.7s on / 9.3s off”
—End of installation—
Communication
There are RS-232C, RS485and CAN communication ports on the battery. The
battery status can be obtained and the battery internal parameters can be
modified via a host computer.
CAN
CAN communication Terminal (RJ45 port) follow CAN protocol, to output
batteries information.
RS485
RS485 Communication Terminal:(RJ45 port) follow RS485 protocol, to output
batteries information.
RS232
RS232 Communication Terminal:(RJ45 port) follow RS232 protocol, to upgrade the
software and communicate with your PC.
Link Port 0,1
Link Port0,1 Communication Terminal:(RJ45 port) follow CAN/RS485 protocol, to
communicate between multiple parallel batteries.
6.1 RS232 port
Default baud rate of RS-232C ports:
115200bps.
Table 6-1 RS232 Connector Pin Assignments
| Pin number | RS-232C port |
|---|---|
| 1 | |
| 2 | |
| 3 | RXD |
| 4 | GND |
| 5 | |
| 6 | TXD |
| 7 | |
| 8 |
6.2 RS485 port and CAN port.
Default baud rate of RS-485 port: 9600bps
Default baud rate of CAN port: 500K
Table 6-2 RS485 and CAN Connector Pin Assignments
| Pin number | Serial | CAN |
|---|---|---|
| 1 | RS485B | |
| 2 | RS485A | |
| 3 | GND | |
| 4 | CANH | |
| 5 | CANL | |
| 6 | GND | |
| 7 | RS485A | |
| 8 | RS485B |
Troubleshooting
Please refer to the troubleshooting methods mentioned below. Please read the
“Table 5 -2 LED indication” of this manual before troubleshooting to prevent
false operations. For example, it doesn’t indicate the battery is faulty if
the ALM alarm red light on the front panel is blinking or constantly on.
When there is an “alarm” indication, it usually works well and needs no
troubleshooting. When there is “protection” indication, the battery will work
normally automatically after “protection” status is released.
Warning: Do not repair the battery if no authorization from Pytes!
7.1 Unable to start
| Problem | Troubleshooting Steps | Solution |
|---|
Press the POWER button to the “ON” state and press the SW button for 1 second,
but the LED indicator doesn’t respond or all the LEDs are off after 1S.| 1.
Confirm that the POWER button remains in the “ON” state;
2. Charge the battery correctly and observe if the battery can be charged
properly.| 1. If the battery enters charging mode, the battery can return to
normal after charging.
2. If not, please contact the local reseller or Pytes.
7.2 Unable to charge
| Problem | Troubleshooting Steps | Solution |
|---|---|---|
| The unfully charged battery cannot be charged properly. | 1. Confirm that the |
battery is turned on;
2. Check the power cable. Confirm that the power cables are correctly
connected and the charging circuit is correct;
3. Check the battery indicator LED to see if the battery is under
“Protection” state. If so, unplug the battery power cable, find the cause of
the protection, and fix the problem, then restart the battery;
4. Check if the charging voltage meets the battery charging requirements. If
not, adjust the power supply voltage to the proper range.| If the battery
still does not charge properly after following the steps, please contact the
local reseller or Pytes.
7.3 Unable to discharge
| Problem | Troubleshooting Steps | Solution |
|---|---|---|
| The battery cannot be discharged properly. | 1. Confirm that the battery is |
turned on;
2. Check the power cables to ensure that they are properly connected.
3. Unplug the battery power cable and measure the battery power output
voltage. If the battery voltage is too low, charge it immediately.
4. Check the battery indicator LED to see if the battery is under
“Protection” state. If so, unplug the battery power cables, find the cause of
the protection, and fix the problem, then restart the battery;| If the battery
still does not discharge properly after following the above steps, please
contact the local reseller or Pytes.
7.4 ALM indicator(alarm) constantly on
When the ALM indicator is constantly red and the other indicators are off, the
battery is in the “Protection” state. When the condition triggered protection
is released, the battery will automatically return to normal operation. There
are a few issues requiring immediate measures.
| Problem | Troubleshooting Steps | Solution |
|---|---|---|
| The ALM indicator is constantly red and all other indicators are off. | 1. |
Check the power cables to ensure that they are properly connected.
2. Check whether the charging voltage, charging/ discharging current,
battery/cell voltage and temperature meet the relevant protection conditions,
and release the “protection” state to ensure that the voltage, current and
temperature are within the normal working range.| If the battery protection
state cannot be released, or the ALM indicator is constantly on when the
battery is properly charged after it is restarted, please contact your local
reseller or Pytes.
Warranty Card
Customer Information
Contact Name|
Phone Number| | Email|
Address|
Product Information
Battery Model| | Inverter Brand/Model|
Battery Quantity| | Inverter Quantity|
Purchase Date| | Inverter Using Time|
Serial Number| | on/off Grid|
Installer Information
Installer Name| | Installation Date|
Problem Description
Photos of Battery Wiring
Photos of Inverter Wiring and Panels
Shanghai PYTES Energy Co., LTD
Add：No.3492 Jinqian Road, Fengxian District, Shanghai, China
Te l ：021-57475852
Email：ess_support@pytesgroup.com
The right of interpretation belongs to Pytes Energy
References
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