Pytes E-BOX Series Lithium Ion Batteries User Manual

: June 16, 2024
: Pytes

Table of Contents

E-BOX Series Lithium Ion Batteries
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

E-BOX Series Lithium Ion Batteries

Pytes E-BOX Series Lithium Ion Batteries

Information Version: 3.5

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
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)

1.1 Product standard configuration

Items

| Quantity| Specifications|

Pictures

---|---|---|---
E-BOX SERIES| 1pc| LFP pack; including BMS,three interfaces (CAN/RS-85/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 Pytes E-BOX Series Lithium Ion Batteries -
functions

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.

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.

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

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;
1.4 Technical preparation

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.
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 > 6 AWG.
Connecting the power cables:

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
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;

Pytes E-BOX Series Lithium Ion Batteries -
communication

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

Pytes E-BOX Series Lithium Ion Batteries - Inverter

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.

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”

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.

6.2 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	RS-232C port
1
2
3	RXD
4	GND
5
6	TXD
7
8

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.

Warranty Card

Customer Information

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