Pytes V Series User manual

User Manual
V Series
Information Version: 1.0
LITHIUM ION BATTERIES

Pytes V Series LFP Battery
User Manual
Dear valued customer,
Thank you for purchasing our Pytes V series LFP battery for home energy storage system.
Our V series battery pack is designed to provide safe, high-performance energy storage
solutions for a variety of applications. The compact and easy-to-install battery pack can be
used as a basic building block in 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.
We strongly recommend that you carefully read this manual before using the product. This
manual provides all the necessary information on installation, usage of the V series battery
pack. Please be advised that only qualified personnel(such as an electrician) should install
and perform maintenance on the battery pack.
It is important to keep in mind the boundaries of use, as described in this manual. The V series
battery pack is not intended for use in medical or aviation-related applications, and should
only be used for its intended purpose as described in this manual. Improper use of the battery
pack will void the warranty of the product, and Pytes cannot be held responsible for any
damage caused by improper or incorrect use of the product.
For your safety and the safety of others, please follow all user safety instructions during the
use of this product. This manual is intended for the installers and users of the V series battery
pack.
Please keep this manual in a safe location, as it is the original manual. For the latest version
of all manuals, please visit our website at http://www.pytesgroup.com.
Thank you again for choosing Pytes, and please do not hesitate to contact us if you have any
questions or concerns about your V series battery pack.
Best regards,
Pytes
Shanghai Pytes Energy CO., LTD.
Add: No.3492 Jinqian Road, Fengxian District, Shanghai, China.
Website: http://www.pytesgroup.com
Email: [email protected]
2

Before Using
Warning
Caution
Please read and follow these instructions carefully:
This equipment should only be installed, operated by qualified personnel (electricians).
The local safety regulations and relevant operating procedures must be followed during the installation,
operation and maintenance of the equipment, otherwise the equipment may be damaged. The safety
precautions mentioned in this manual are supplementary to the local safety regulations.
Do not short-circuit the Li-ion battery.
Follow 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, make sure to turn off the power and shut
down the system to avoid the risk of electric shock.
Do not expose the Li-ion battery to heat or fire. In case of fire, use a 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 actions will not be covered by the warranty.
Before operating the inverter, ensure that all batteries have been started up.
The following precautions should be taken when working on batteries:
a) Shut down the power and loads before connecting or disconnecting battery terminals.
b) Do not wear any metal objects such as 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.
Do not dispose of batteries in fire, as the batteries may explode.
Keep the Li-ion battery away from water, dust, and contamination to avoid explosion or other harmful
conditions that may even lead to personal injury.
Do not open or mutilate batteries. Released electrolyte can be harmful to the skin and eyes and may be
toxic.
A battery can pose a risk of electric shock and burns due to high short-circuit current.
A malfunctioning battery can reach temperatures that exceed the safe contact level.
Danger
3

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 pets touchable areas.
Recyclable.
LI-ION
4

CONTENTS
1 Specifications 6
1.1 Product standard configuration 7
1.2 BMS function 8
2 Interface and protection functions 8
2.1 Battery front panel schematic 8
2.2 Components 9
3 Operating Environment 10
4 Packaging, transportation, storage requirements 10
4.1 Transportation 10
4.2 Storage 10
5 Installation and configuration 10
5.1 Installation preparation 10
5.2 Unpacking 11
5.3 The preparatory work 11
5.4 Installation 14
6 Communication 14
6.1 RS232 port 15
6.2 RS485 port and CAN port 15
7 Troubleshooting 15
7.1 Unable to start 16
7.2 Unable to charge 16
7.3 Unable to discharge 16
7.4 ALM constantly on 17
5

1 Specifications
Table 1-1 Battery Pack Specifications
Battery Model V5° V5°α
Power Terminal PHOENIX M6 Bolt Amphenol SurLok Plus 8.0mm
Chemistry LFP
Nominal Voltage 51.2V
Voltage Range 47.5V~57.6V
Nominal Capacity 100Ah
Nominal Energy 5.12kWh
L440mm*W530mm*H140mm(3.2U)
L17.32in*W20.87in*H5.51in(3.2U)
Unit Weight 44KG / 97lbs
Recommended Charge/
Discharge Current
Max Continuous Charge/
Discharge Current
Peak Charge/
Discharge Current
Round-Trip Efficiency ≥95%
Communication Protocol RS485, CAN, WiFi (W/ Optional Device)
Cycle Life ≥6000cycles
Calendar Life ≥10years
Within 1month: -20°C~50°C(-4℉~122℉)
1-3months: -10°C~40°C(14℉~104℉)
3-12months: 20°C~25°C(68℉~77℉)
75A
100A
101A~120A (3min);
121A~180A (15sec)
Charge: 0°C~45°C(32℉~113℉)
Discharge: -10°C~50°C(14℉~122℉)
Operating Temperature
UN38.3, CE, UL1973, UL9540A, UL9540, IEC62619, CEC, SGIPCertificates
Storage Temperature
Heating System Temperature Rise 10°C(18℉)/Hour,
Operation Temperature -18°C~10°C(-0.4℉~50℉)
[1], [2]: The recommended and Max continuous charge and discharge current is for a battery cell temperature within
10°C~40°C(50℉~104℉)to consider. It will result in a derating on current if out of the temperature range.
[3]: Test conditions 0.2C Charging/Discharging, @25°C(77℉), 80% DOD.
[4]: Integrated with some inverters, heating system may consume enengy from battery when there's voltage difference among
system modules, between 0°C/32°F to 5°C/41°F. Follow 5.3.3 of this manual for multiple batteries power cable connection to
minimize influence of the circular current, thus decrease battery energy loss.
Unit Dimension
[3]
[2]
[1]
6

Items Quantity Specifications Pictures
V5° Version
1.1 Product standard configuration
LFP battery pack
Voltage: 51.2V
Capacity: 100Ah
Energy:5.12kWh
Power Terminal:
PHOENIX C-ES-FTB 25-70
V5° Battery 1pc
Function: cascade communication
between batteries
Length: 350mm
Communication protocols:
CAN / RS485
Cascade
Communication
Cable
Grounding Cable 1pc 10AWG/1000mm/SC10-6
Busbar for parallel
connection between
batteries:
Length: 190mm/Ampacity: 300A
Flexible Busbar
1pc
2pc
Items Quantity Specifications Pictures
V5°α Version
LFP battery pack
Voltage: 51.2V
Capacity: 100Ah
Energy:5.12kWh
Power Terminal:
Amphenol Surlok 8.0mm Socket
V5° Battery 1pc
Function: cascade communication
between batteries
Length: 350mm
Communication protocols:
CAN / RS485
Cascade
communication
Cable
Grounding Cable 1pc 10AWG/1000mm/SC10-6
Cable for parallel connection
between batteries; UL10269-
0AWG / 200mm / Amphenol
Surlok 8.0mm; Ampacity: 200A
Flexible Busbar
1pc
1set
7

1.2 BMS Functions
2 Interface and protection functions
2.1 Battery front panel schematic
Protection and Alarm Management and Monitor
Charge / Discharge End Cut-off Cells Balance
Charge over Voltage Protection Intelligent Charge
Charge / Discharge over Current Protection Charge/Discharge Current Limitation
Short Circuit Protection Administrator Monitoring
Power Cable Reverse Protection Log Record
High / Low Temperature Warning
Over / Under Temperature Protection Remaining Power Calculation
Power Button
Ground
CAN/RS485 communication Port
DIP Switch IoT Port Positive
Power Terminal
V5°
V5°α
Dry Contact
SOC Indicator
Alarm Indicator
Running Light
Start Switch
Negative
Power Terminal
8

2.2 Components
No. Name Label Functions description
1 Ground Connection for ground cable
2 Power button POWER
3 Soft start switch SW
4 DIP Switch ADD
Running Light RUN
Alarm Indicator ALM
SOC indicator SOC
6 CAN
7 RS485
9 Negative Power Terminal “-” Negative input and output interface
10 Positive Power Terminal “+” Positive input and output interface
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.
When the on/off button is "ON", press and hold this button
for 1 second to enter the startup or sleep mode.
Set according to inverter brand, see checking list
Green light. The light flashes when Standby. The light is
constantly on when charging. The light blinks when
discharging.
Red light. The light flashes when Alarming. The light is
continuously on when protected.
Light bar shows current remaining capacity.
1 way input and 3 ways output dry contact signal.
Real-time monitoring of battery status and remote upgrade
RJ45 ports, connect Port 1 of the previous battery to Port
0 of the next one. The Port 0 of the master battery is
vacant.
External CAN
communication port
Cascade
communication port
Dry Contact
LoT port
IN1-/IN1+
COM2/NO2
COM3/NO3
COM4/NO4
External RS-485
communication port
Warning: 6,7,8,9,10,11,12is DVC-A circuit, they shall not be connected to DVC-B/C circuit when installed, or hazard shock
will occur.
5
RJ45 port, follows CAN protocol, for outputting battery
information.
RJ45 port, follows RS485 protocol, for outputting battery
information.
Prot 1/0
8
11
12
9

3 Operating Environment
4 Packaging, transportation, storage requirements
5 Installation and configuration
Battery operating environment requirements:
Operating Temperature: -10℃~50℃(14℉~122℉)
Relative Humidity: 20%-80%, no condensation
Altitude: ＜4000m
Site environment requirements: Away from heat source, avoid direct sunlight, no corrosive gases, no
explosive gases, no insulating gases, no insulating conductive dust.
Install in cabinet which shall not be opened without dedicated tools
Install in a restricted access area.
Always check all applicable local, national, and international regulations before transporting Li-ion
Batteries.
During transportation, protect the battery from severe vibration, shock or squeezing, and from
exposure to sunlight and rain.
During the loading and unloading process, the battery should be handled gently to prevent it from
falling, rolling and being subjected to heavy pressure.
Relative humidity: 20%-80%, no condensation
Altitude: <4000m
Store the battery in a cool, dry place, away from heat sources and no direct sunlight.
Keep away from conductive substances such as conductive dust
For long-term storage (>6 months), charge the LFP battery to more than 90% of its rated capacity. The
battery needs to be charged to more than 90% of its rated capacity every 6 months.
Keep the SOC of the battery at 40%-60% during storage. The Self-discharge of the LFP battery
pack is 1-2% per month. If there is no power left when checking the LFP battery, do not charge or use it
without permission, contact your installer for the next step.
Follow the storage instructions in this section and refer to Table 1-1 Battery Pack Specifications for
storage temperature to optimize the battery lifespan during storage. Any failure or damage to the battery
caused by failure of following these instructions is not covered by the warranty.
Only those who have received training in the power system and possess a comprehensive understand-
ing of the same are allowed to install the equipment. It is imperative to follow the safety regulations
defined by local authorities and adhere to 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
4.1 Transportation
5.1 Installation preparation
5.1.1 Safety Requirements
4.2 Storage
10

Tools
Screwdriver (Slotted, Phillips) Multimeter
Wrench Clip-on ammeter
Diagonal pliers Insulating tape
Thermometer Pliers
Anti-static wrist ring Clip Pliers
Tapes Strippers
Electrical interface settings:
If the battery is directly connected to the energy storage inverter or DC charger, please verify:
if the operating voltage, current, and power of the equipment align with the battery parameters listed
in "Table 1-1 Battery Pack Specifications".
Safety inspection:
Fire-fighting equipment such as portable dry powder fire extinguishers in proximity to the battery is
mandatory. Dangerous substances such as flammable or explosive materials must not be stored
near the battery.
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 to preserve the insulation coating on the casing's surface.
Please contact PYTES if there is any damage or missing of products and / or components.
source and that the battery system is turned off. Distribution cabling needs to be handled carefully with
essential protective measures to avoid any safety hazards during the maintenance and operation.
The operation environment must comply with the requirements outlined in Chapter 3, "Operation
Environment." If not, necessary adjustments must be made and subsequently reevaluated.
The tools that may be used are shown in Table 5-1.
Table 5-1 Tools
5.2 Unpacking
5.1.2 Checking the operation environment
5.1.3 Tools
5.1.4 Technical preparation
The V series can be installed either vertically or horizontally. The instructions in this chapter are only for
horizontal installation, while vertical installation follows a similar process. All equipment must be placed
steadily after installation.
5.3.1 Install the battery
5.3 Installation
11

Warning: Connecting batteries in series is forbidden, as it can create a high voltage that poses a hazardous shock risk.
Connecting the power cables:
1)Power cable connection instructions of Single-Rack:
Connect the positive and negative terminals of the battery to the battery port of the energy storage
inverter with power cables.
The connection of multiple batteries is only permitted in parallel. Firstly, connect the positive and
negative terminals of the batteries in parallel with the supplied flexible busbar (for up to three batteries,
no additional accessories are required). Next connect the positive and negative terminals of the battery
port of energy storage inverter to one of the batteries with power cables. But due to limitations in battery
communication and power cables, a maximum of 14 batteries can be connected in parallel, and a
busbar or junction box should be used for convergence.
Regardless of the number of batteries in parallel, the standard charging and discharging current for a
single battery remains the same, please refer to "Table 1-1". The capacity can be increased by
connecting the batteries in parallel, but due to the limitations of BMS and power cable, a maximum of 14
batteries can be connected in parallel and a busbar or junction box should be used for confluence.
Note: The grounding resistance should be less than 0.1Ω.
Before connecting the power cable, connect and disconnect the cable to identify the positive and
negative terminals, then make a mark respectively. After the cable is connected, measure whether there
is short-circuit or reverse connection.
Select the correct cable based on your loads by referencing to the table below：
Please select suitable power cable according to maximum current that may pass through the circuit. If
you need advice, please contact your installer for help.
Loosen the screw on the grounding position of the front panel of the battery and attach the lug of the
ground cable over the screw. Use a screwdriver to tighten the screw and connect the other end of the
ground cable to a reliable grounding point.
External Bi-polar over current protection devices and Bi-polar external isolator shall be equipped.
The diameter of the ground cable must be ≥ 6mm2 / 12kcmilExternal Bi-polar over current protection
devices and Bi-polar external isolator shall be equipped.
The minimum diameter must be >=6mm2.
5.3.2 Connect Ground cable
5.3.3 Connecting the power cable
Single battery:
Multiple batteries (Max number 14):
Area Standard Current Max. Current
(kcmil) (mm²) （A）（A）
4/0 211.48 107.22 423.2 482.6
3/0 167.67 85.01 335.5 382.6
2/0 133 67.43 266.2 303.6
1/0 105.5 53.49 211.1 240.7
1 83.65 42.41 167.4 190.9
2 66.31 33.62 132.7 161.3
3 52.6 26.67 105.2 120.0
4 41.7 21.15 83.5 95.2
AWG
12

Warning: Batteries connected in series are forbidden, high voltage would lead to hazard shock.
Select the corresponding port based on the communication protocol between the battery and energy
storage inverter (RS485/CAN), and then insert the communication cable into the port.
The communication between the master and the slaves is carried out in a cascade mode, wherein one
battery acts as the master while the others are slaves. Please refer to the picture below for the cascade
connection. Users need to insert the communication cables into the relevant link ports between the
batteries and keep in mind that:
1.Keep the master Port 0 free;
2.Keep the end slave Port 1 free;
Single battery:
Multiple batteries (Max number 14):
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 them to the energy storage inverter.
1)Communication cable connection instructions of Single-Rack:
2)Communication cable connection instructions of Multi-Rack:
Connect the master battery of each rack to a hub with a standard communication cable. A Hub is
required for to build up the communication between inverter and battery (more than 14 batteries or more
than one rack)
Note: The system may not be able to communicate if not followed the instruction.
5.3.4 Connecting communication cables
Note: When multiple batteries are connected in parallel, in order
to minimize the influence of the circular current, each battery
can be connected to a busbar with power cable. The length,
thickness, material, and resistance of the cables connected
in parallel must be the same.
Figure 5-1 Schematic diagram of power cable connection
Figure 5-2 Schematic diagram of
communication cable connection
The battery provides a WiFi port for data collection and upload to the monitoring cloud platform, which
supports remote viewing of battery data and enables remote firmware upgrades. This product can be
purchased separately from PYTES authorized resellers/distributors/installers.
5.3.5 WIFI Connection
13

Make sure that all batteries have been powered on prior to running the inverter. This is to avoid battery
shock by the in-rush current of the large capacitors of the inverter.
Power on Procedure
Step 1: Turn on all power buttons.
Step 2: Press only the master battery SW button for one
second.
Please ensure that all batteries have been activated
before turning on the inverter. This will help prevent battery
shock caused by the inrush current of the large capacitors
in the inverter.
Shut down Procedure
Step 1: Press and hold the SW button of the master
battery for three seconds.
Step 2: Turn off all power buttons.
Please wait for all battery lights to go out before turning off
the power buttons.
5.4 Procedure of starting/Shut down the whole system
Note: Batteries must be placed in a locked cabinet or room with a 25mm/1inch horizontal gap for ventilation between them.
The battery cabinet needs to support the total weight of the batteries and necessary accessories.
6 Communication
---End of installation---
The battery features RS-232C, RS-485, and CAN communication ports. The battery status can be
obtained.
CAN
The CAN communication terminal (RJ45 port) follows CAN protocol, to output batteries information.
RS485
The RS485 communication terminal (RJ45 port) follows RS485 protocol, to output batteries information.
RS232
The RS232 communication terminal (RJ45 port) follows RS232 protocol, to upgrade the software and to
communicate with your PC.
Link Port 0,1
The Port 0 and Port 1 communication terminals (RJ45 ports) follow the CAN/RS485 protocol for
cascade communication between multiple parallel batteries.
LoT Port
4 Pin Circular Connector for connecting with WiFi sticks
1)Diagram
2)Connecting steps:
Step 1: Insert the WiFi stick into the LoT Port on the battery panel.
Step 2: Create an account on the cloud platform and bind the WiFi stick.
Step 3: Pair the WiFi stick with a wireless network (see WiFi stick user
manual for details).
CloudRouter
14

ALM RUN Capacity LED Descriptions
● ●
Shut down OFF OFF OFF All off
Normal OFF Blink 1 OFF standby
Alarm Blink 3 OFF OFF Low voltage
Normal OFF Light
Alarm Blink 3 Light
Normal OFF Blink 3
Alarm Blink 3 Blink 3
Battery
status
Protection /
Alarm /
Normal
All lights stay on simultaneously
for one second
Power-on Normal ON ON ON
Protection triggered,
charging stops
Protection triggered,
discharging stops
Protection Light OFF OFF
Protection Light OFF OFF
Base on capacity
Base on capacity
Charging
Discharge
Default baud rate of RS-232C ports: 115200bps.
6.1 RS232 port
6.2 RS485 port and CAN port.
7 Troubleshooting
Table 6-2 RS485 and CAN Connector Pin Assignments
Table 6-1 RS232 Connector Pin Assignments
Default baud rate of RS-485 port: 9600bps
Default baud rate of CAN port: 500K
Please refer to the troubleshooting methods mentioned below. Please read the “Table 7-1 LED indica-
tion” of this manual before troubleshooting to avoid false operations.
For example, the blinking or constant red light of the ALM alarm on the front panel does not necessarily
indicate a faulty battery. In most cases, the "alarm" indication signifies normal operation and requires no
troubleshooting. Furthermore, if the battery indicates "protection," it will resume normal operation
automatically once the "protection" status is released. Table 7-1 LED indications
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”
1
2
3 RXD
4 GND
5
6 TXD
7
8
1 RS485B
2 RS485A
3 GND
4 CANH
5 CANL
6 GND
7 RS485A
8 RS485B
Pin number RS-232C port
Pin number Serial CAN
Standby
15

7.1 Unable to start
7.2 Unable to charge
7.3 Unable to discharge
Problem Troubleshooting Steps Solution
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 this
1s duration
1. If the battery enters into
charging mode, it should return to
its normal state after completing
the charging process.
2. If not, please contact the local
reseller or Pytes.
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.
The not fully
charged
battery cannot
be charged
properly.
If the battery still
does not charge
properly after
following the
steps, please
contact the local
reseller or Pytes.
1. Confirm that the battery is turned on;
2.Inspect the power cable to make sure that it is correctly
plugged in and that the charging circuit is functioning properly;
3. Check the battery indicator LED to determine if the battery is
under “Protection” state. If so, unplug the battery power cable,
find the cause of the protection, and correct the issue before
restarting the battery.
4. Ensure that the charging voltage meets the battery’s charging
requirements. If not, adjust the power supply voltage to the
proper range.
Problem Troubleshooting Steps Solution
The battery
cannot be
discharged
properly.
If the battery still
does not discharge
properly after
following the above
steps, please
contact the local
reseller or Pytes.
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 immedi-
ately.
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, resolve the issue, and thereafter restart
the battery.
16

Problem Troubleshooting Steps Solution
Warning: Do not repair the battery if no authorization from Pytes!
The ALM indicator
remains in a constant
state of red, while all
other indicators remain
inactive.
If the battery protection
state cannot be released, or
if the ALM indicator is
constantly on when the
battery is properly charged
after it is restarted, please
contact your local reseller or
Pytes.
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.
When the ALM indicator is constantly red and the other indicators are off, the battery is in the “Protection”
state. Once the condition that triggered protection is released, the battery will automatically return to
normal operation. However, there are a few issues requiring immediate measures.
7.4 ALM indicator(alarm) constantly on
17

Contact Name
Phone Number Email
Address
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Purchase Date Inverter Using Time
Serial Number 
Installer Name Installation Date
Photos of Inverter Wiring and Panels
Warranty Card
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18

Shanghai PYTES Energy Co., LTD
Add：No.3492 Jinqian Road, Fengxian District, Shanghai, China
Tel：[phone]
Email：[email protected]
The right of interpretation belongs to Pytes Energy