Pytes E-BOX Series User manual

V2.0

Pytes E-BOX SERIES LFP Battery User Manual
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Pytes E-BOX SERIES LFP Battery User Manual
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 home applications, 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 the ensure the safety of installers, users, service
personnel and third parties.
This is the original manual, keep it in a safe location! Please consult
http://www.pytesgroup.com for the latest version of all manuals.
Shanghai Pytes Energy CO., LTD.
Add: No.3492 Jinqian Road, Qingcun Town, Fengxian District, Shanghai, China.
Website: http://www.pytesgroup.com
Email: [e-mail]

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Before Using
Read and understand the following instructions:
1.This equipment may only be installed, operated and maintained
by qualified skilled person(electrician).
2.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 intended to supplement the local safety regulations.
1. Do not dispose of batteries in fire. The batteries may explode.
2. Do not open or mutilate batteries. Released electrolyte can
prove harmful to the skin and eyes. It may be toxic.
3. A battery can present a risk of electric shock and burns by high
short-circuit current.
4. 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 consumer 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;
Warning
Caution

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1. 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.
2. Do not short-circuit the Li-ion battery.
3. Observe the plus (+) and minus (-) marks on the Li-ion battery
and equipment and ensure correct use. Do not reverse connect the
Li-ion battery.
4. Do not dismantle, crush, puncture, open or shred the Li-ion
battery.
5. 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.
6. Do not expose Li-ion battery to heat or fire. In case of fire, please
use dry powder fire extinguisher.
7. Do not dismantle any part of the system without contacting DLG
or DLG authorized technical engineers. System failure caused by
such will not be covered by the warranty.
Danger
e) Wear personal protective equipment.
f) Ensure that if the battery is either intentionally or inadvertently
grounded. Contacting with any part of a grounded battery can
cause electric shock and burns by high short-circuit current. The
risk of such hazards can be reduced if ground surroundings are
removed during installation and maintenance by a skilled person.
1. Before moving or reconnecting the running system, the power must
be off and the system should be shut down, otherwise there will be risk
of electric shock.
2. Do not expose Li-ion battery to heat or fire. In case of fire, please
use dry powder fire extinguisher.
3. Do not dismantle any part of the system without contacting DLG or
DLG authorized technical engineers. System failure caused by such will
not be covered by the warranty.

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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.

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Contents
1 Specifications ...............................................................................................7
1.1 Product standard configuration......................................................8
1.2 BMS function.....................................................................................9
2 Interface and protection functions.............................................................9
2.1 Battery front panel schematic.........................................................9
2.2 Components ......................................................................................9
3 Operating Environment............................................................................. 11
4 Packaging, transportation, storage requirements ................................ 11
4.1 Transportation ................................................................................. 11
4.2 Storage............................................................................................. 11
5 Installation and configuration ...................................................................12
5.1 Installation preparation ..................................................................12
5.2 Unpacking........................................................................................13
5.3 The preparatory work.....................................................................14
5.4 Installation........................................................................................14
6 Communication ..........................................................................................19
6.1 RS232 port.......................................................................................19
6.2 RS485 port and CAN port.............................................................20
7 Troubleshooting..........................................................................................20
7.1 Unable to start.................................................................................21
7.2 Unable to charge ............................................................................21
7.3 Unable to discharge .......................................................................22

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7.4 ALM constantly on ..........................................................................22

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1 Specifications
Table 1-1 Battery Pack Specifications
Battery Model
E-BOX-4850
E-BOX-48100C
E-BOX-48100R
Chemistry
LFP
LFP
LFP
Nominal Voltage
48V
51.2V
51.2V
Voltage Range
45V-54V
47.5V-57.6V
47.5V-57.6V
Nominal Capacity
50Ah
100Ah
100Ah
Nominal Energy
2.4kWh
5.12kWh
5.12kWh
Unit Dimension
L440mm* W420mm
* H89mm（2U）
L440mm* W480mm
* H200mm（4.5U）
L440mm* W620mm
* H117mm（2.6U）
Unit Weight
25kg
50.6kg
51kg
Standard Charge/Discharge
Current
25A
50A
50A
Maximum Charge/Discharge
Current
50A
100A
100A
Peak Current
102A@15s
102A@15s
102A@15s
Round-Trip Efficiency
≥95%
≥95%
≥95%
Communication Protocol
RS232, RS485,
CAN
RS232, RS485,
CAN
RS232, RS485,
CAN
Cycle Life
≥6000cycles@0.5C
/0.5C@ 25℃
≥8000cycles@0.5C
/0.5C@ 25℃
≥6000cycles@0.5C
/0.5C, 25℃
Calendar Life
≥10years
≥10years
≥10years
Operating Temperature
Charge: 0℃~ 45℃,
Discharge: -10℃~
50℃
Charge: 0℃~ 45℃,
Discharge: -10℃~
50℃
Charge: 0℃~ 45℃,
Discharge: -10℃~
50℃

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Certificates
IEC62619 / UN38.3
IEC62619 / UN38.3
UL1973, IEC62619
/ UN38.3
Storage Temperature
Within 1month:
-20~45°C
1-3months:
-20~35°C
3-12months:
20~25°C
Within 1month:
-20~45°C
1-3months:
-20~35°C
3-12months:
20~25°C
Within 1month:
-20~45°C
1-3months:
-20~35°C
3-12months:
20~25°C
1.1 Product standard configuration
Items
Quantity
Specifications
Pictures
E-BOX SERIES
1pcs
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
1set
Connect battery to battery;
0.2m; Positive and negative
Communicate
Cable
1pcs
Connect battery to battery;
0.2m; CAN or RS485
communicate
Earthing cable
1pcs
1m

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1.2 BMS function
Protection and Alarm
Management and Monitor
Charge/Discharge End
Cell Balance
Charging over Voltage
Intelligent Charge Model
Charge/Discharge Over Current
Charge/Discharge current Limit
High/Low Temperature
Capacity Retention Calculation
Short Circuit
Administrator Monitor
Power Cable Reverse
Record
2 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.

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3
Soft start switches
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
Select the matching manufacturer,
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
CHARGE
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 terminal
Link Port
The master is connected to PORT1,
and the slave is connected to
PORT0.
9
Input and output
interface (negative)
“-“
Negative input and output interface
10
Input and output
interface (positive)
“+“
Positive input and output interface
Warning: 6,7,8,9,10 is DVC-A circuit, they shall not be connected to DVC-B/C
circuit when installed, or hazard shock will occur.

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3 Operating Environment
Battery operating environment requirements:
Operating Temperature: -10℃~50℃
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.
Installed in cabinet which shall not be opened without a tool or
install in a restricted access area.
4 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 charge remaining 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.

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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 80% of its rated capacity for long-
term storage(＞6months). The battery needs to be recharged every 6
months to more than 80% of the rated capacity.
5 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 cut off 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.

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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

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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
1. Make sure the POWER buttons of all batteries are OFF.
2. Ensure the charging voltage of power supply equipment is DC57.5
±0.1V;
3. 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.
External Bi-polar over current protection devices and Bi-polar
external isolator shall be equipped.
The minimum diameter must be >=6mm2.

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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
95.2
5
33.1
16.77
66.2
75.5
6
26.3
13.3
52.5
59.9
7
20.8
10.55
41.6
47.5
8
16.5
8.37
33
37.7
9
13.1
6.63
26.2
29.8
10
10.4
5.26
20.8
23.7
It should be >10 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

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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 supplied red cables, and
connect the negative poles with the supplied 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 battery current 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 we supply,
only two batteries can be connected in parallel and a bus bar should
be used for connecting them together.
Warning:Batteries connected in series are forbidden, high voltage
would lead to hazard shock.
2) Power cable connection instructions of multi-Rack:
Collect the positive and negative power cables respectively by the
bus bar or junction box, then connect two racks in parallel.
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.

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Figure 5-1 Schematic diagram of battery connection
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:
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

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1. The host Link Port 0 must be kept free;
2. The end slave Link Port 1 must be kept free;
Note: The system may not be able to communicate if not
followed the instruction.
Table 5-3 LED indications
Battery
status
Protectio
n / 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“0.25on/3.75off”；Blink 2“0.5s
on /0.5s off”；Blink 3“0.5s on /1.5s off”.
---End of installation---

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6 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
TXD
4
GND
5