V Series LFP Battery
“
Specifications
| Battery Model | Power Terminal | Chemistry | Nominal Voltage | Voltage Range | Nominal Capacity | Nominal Energy | Unit Dimension | Unit Weight | Rated Charge/ Discharge Current | Maximum Charge/ Discharge Current | Round-Trip Efficiency | External Communication | Internal Communication | IP rating of Enclosure | IP rating of Cabinet | DC Breaker |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LFP Battery Pack | PHOENIX C-ES-FTB 25-70 | Lithium Ion | 51.2V | — | 100Ah | 5.12kWh | — | — | 50A | 75A | 95% | RS485, CAN, Dry Contact, WiFi (W/ Optional Device) | RS232 | IP20 | NEMA3 | Dual Pole, 125Vdc, 125Adc, Icu 10kA |
Product Usage Instructions
1. Installation and Configuration:
- Installation Preparation: Ensure you have read
the manual thoroughly before starting. Follow all safety
precautions. - Unpacking: Carefully unpack the battery and
associated components. - Installation: Follow the step-by-step guide
provided in the manual for proper installation. - Starting/Shut Down: Follow the procedure
outlined in the manual for starting and shutting down the
system.
2. Operating Environment & Maintenance:
Operate the battery within the specified temperature range.
Regularly check and maintain the battery to ensure optimal
performance.
3. Communication:
- RS232 Port: Use the RS232 port for
communication purposes as described in the manual. - RS485 Port and CAN Port: Utilize these ports
for communication between devices.
4. Troubleshooting:
Refer to the troubleshooting section in the manual if you
encounter issues such as unable to start, charge, discharge, or if
ALM light is constantly on.
Frequently Asked Questions (FAQ)
Q: What should I do if the battery fails to charge?
A: Check the connections and ensure the charger is working
correctly. If the issue persists, refer to the troubleshooting
section in the manual.
Q: Can I use this battery outdoors?
A: The battery has an IP20 enclosure rating, suitable for indoor
use. Outdoor use may require additional protection.
Q: How long is the calendar life of the battery?
A: The battery has a calendar life of 10 years as per
specifications.
“`
User Manual V Series
LITHIUM ION BATTERIES
Information Version: 1.8 Release Date: Mar. 31,2025
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. Factory Address:No. 3492 Jinqian Road, Fengxian District, 201406 Shanghai, PEOPLE’S REPUBLIC OF CHINA Website: http://www.pytesgroup.com Email: ess_support@pytesgroup.com
2
Before Using
Please read and follow these instructions carefully:
Warning
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.
Caution
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. The battery should be charged within 12 hours when it’s fully discharged or over-discharging protection mode is activated. Fail to follow this instruction will damage the battery and is not covered by warranty.
Danger
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.
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
9
2.1 Battery front panel schematic
9
2.2 Components
10
3 Operating Environment&Maintenance
11
4 Packaging, transportation, storage requirements
11
4.1 Transportation
11
4.2 Storage
11
4.3 Disposal
12
5 Installation and configuration
12
5.1 Installation preparation
12
5.2 Unpacking
13
5.3 Installation
13
5.4 Procedure of starting/Shut down the whole system
15
6 Communication
15
6.1 RS232 port
16
6.2 RS485 port and CAN port
16
7 Troubleshooting
16
7.1 Unable to start
17
7.2 Unable to charge
17
7.3 Unable to discharge
17
7.4 ALM constantly on
18
5
1 Specifications
Table 1-1 Battery Pack Specifications
Battery Model Power Terminal Chemistry Nominal Voltage Voltage Range Nominal Capacity Nominal Energy
Unit Dimension
Unit Weight Rated Charge/ Discharge Current [1] Maximum Charge/ Discharge Current [2] Round-Trip Efficiency External Communication Internal Communication IP rating of Enclosure IP rating of Cabinet
DC Breaker
V5° Plus Amphenol SurLok Plus 8.0mm Chemistry
LFP 51.2V 47.5V~57.6V 100Ah 5.12kWh 484±2 x 578.2 ±2x 140±2 mm (3.2U) / 19.05±0.08 x 22.76±0.08 x 5.51±0.08 inch (3.2U) 45.34kg / 100lbs
50A
75A
95% RS485, CAN, Dry Contact, WiFi (W/ Optional Device)
RS232 IP20 [3] NEMA3 [4] Dual Pole, 125Vdc, 125Adc, Icu 10kA
Cycle Life [5] Calendar Life
6000 Cycles 10 Years
Battery Max and Min Operating Temperature
Charge: 2°C ~ 57°C / 35.6°F ~134.6°F Discharge: -18°C~57°C / -0.4°F~134.6°F
Certificates
UN38.3, CE,UL1973, UL9540A, UL9540,IEC62619, SGIP
Storage Temperature
Within 1month: -20°C~50°C(-4~122) 1-3months: -10°C~40°C(14~104) 3-12months: > 0°C~30°C(32°F~86°F)
[1], [2]: The recommended and Max continuous charge and discharge current is for a battery cell temperature within 10°C~40°C(50°F~104°F)to consider. It will result in a derating on current if out of the temperature range. [3] For battery modules, they can only be used indoors. [4] Battery with cabinet, it can be used indoors or outdoors. If used outdoors, it can withstand direct sunlight and rain. [5]: Test conditions 0.2C Charging/Discharging, @25°C(77°F), 90% DOD. Working 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.6
1.1 Product standard configuration
V5° Version
Items
Quantity
Specifications
V5° Battery
Flexible Busbar
Cascade Communication Cable
LFP battery pack Voltage: 51.2V Capacity: 100Ah 1pc Energy:5.12kWh Power Terminal: PHOENIX C-ES-FTB 25-70
Busbar for parallel 2pc connection between
batteries: Length: 190mm/Ampacity: 300A
Function: cascade communication between batteries 1pc Length: 350mm Communication protocols: CAN / RS485
Grounding Cable 1pc 10AWG/1000mm/SC10-6
Spare RJ45 Connector V5° Version
Items
V5° Battery
Power Cable
Cascade communication Cable
2pcs
/
Quantity
Specifications
1pc 1set
LFP battery pack Voltage: 51.2V Capacity: 100Ah Energy:5.12kWh Power Terminal: Amphenol Surlok 8.0mm Socket
Cable for parallel connection between batteries; UL102690AWG / 180mm / Amphenol Surlok 8.0mm; Ampacity: 200A
Function: cascade communication between batteries 1pc Length: 350mm Communication protocols: CAN / RS485
Grounding Cable 1pc 10AWG/1000mm/SC10-6
Spare RJ45
Connector
2pcs
/
7
Pictures Pictures
V5° Plus Version
Items
Quantity
Specifications
V5° Plus Battery 1pc
Power Cable
1set
Cascade
communication
1pc
Cable
LFP battery pack Voltage: 51.2V Capacity: 100Ah Energy:5.12kWh Power Terminal: Amphenol Surlok 8.0mm Socket
Cable for parallel connection between batteries; UL102690AWG / 180mm / Amphenol Surlok 8.0mm; Ampacity: 200A
Function: cascade communication between batteries Length: 350mm Communication protocols: CAN / RS485
Grounding Cable 1pc 10AWG/1000mm/SC10-6
Spare RJ45
Connector
2pcs
/
Pictures
1.2 BMS Functions
Protection and Alarm Charge / Discharge End Cut-off Charge over Voltage Protection Discharge under Voltage Protection Charge / Discharge over Current Protection High / Low Temperature Warning Over / Under Temperature Protection
Management and Monitor Cells Balance
Intelligent Charge Charge/Discharge Current Limitation
Remaining Power Calculation
Administrator Monitoring
Short Circuit Protection Power Cable Reverse Protection
Log Record
8
2 Interface and protection functions
2.1 Battery front panel schematic
Running Light Alarm Indicator
Start Switch
SOC Indicator Dry Contact
Power Button
Ground
DIP Switch
IoT Port
Console communication Port
CAN/RS485 communication Port
Negative Power Terminal
V5°
Negative Power Terminal
V5° Plus
125V / 125A DC Breaker
V5°
Positive Power Terminal
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2.2 Components
No.
Name
1 Ground
2 Power button
3 Soft start switch
Label
Functions description
Connection for ground cable
When switched to “ON”, the system can be activated by POWER the “SW” key or external power supply; when switched to
“OFF”, the system is off.
SW
When the on/off button is “ON”, press and hold this button for 1 second to enter the startup or sleep mode.
4 DIP Switch
ADD Set according to inverter brand, see checking list <>
Running Light 5
Alarm Indicator
RUN ALM
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.
SOC indicator
SOC Light bar shows current remaining capacity.
External CAN 6 communication port
7
External RS-485 communication port
CAN RS485
RJ45 port, follows CAN protocol, for outputting battery information.
RJ45 port, follows RS485 protocol, for outputting battery information.
8 External Console communication port
Console
Cascade 9 communication port
Prot 1/0
10 Negative Power Terminal “-”
11 Positive Power Terminal
“+”
RJ45 ports, follows RS232 protocol,for outputting battery information.
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.
Negative input and output interface
Positive input and output interface
12 Dry Contact
IN1-/IN1+ COM2/NO2 1 way input and 3 ways output dry contact signal. COM3/NO3 COM4/NO4
13 LoT port
Real-time monitoring of battery status and remote upgrade
14 DC Breaker
Turns Power Supply on/off
[1]:During the initial setting, professionals wearing insulating gloves should set the dial. After setting, customers are not allowed to change the dial without authorization during the battery use. If the setting needs to be changed, please contact professional maintenance personnel for operation. If used outdoors, the cabinet for installing the battery modules can be locked to prevent the dip switches from being switched on/ off during operation.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.
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3 Operating Environment&Maintenance
Operating Environment Battery operating environment requirements: Operating Temperature: Charge: 2°C ~ 57°C / 35.6°F ~134.6°F; Discharge: -18°C~57°C / -0.4°F~134.6°F. 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.
Maintenance Every month, please check whether the components are in good condition, whether the circuits
are intact and connected normally, whether the wiring harness connections are damaged or rusty, and if this happens, please contact the maintenance personnel in time to assist in replacement; and please use an insulating cleaning cloth to wipe the dust on the surface of the battery and the circuit connection every week to ensure the cleanliness of the use environment. And every month, please check whether the system operation information interface shows that the various communications are normal, whether the current, voltage, temperature and other parameters are within a reasonable range and there are no alarm reminders. If this happens, please contact the maintenance personnel in time for assistance.
4 Packaging, transportation, storage requirements
4.1 Transportation
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.
4.2 Storage
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.
For LFP batteries that have been stored for a long time (more than 6 months), they should be charged to more than 90% of the rated capacity every 6 months by a professional maintenance technician approved by Pytes. Keep them in a well-ventilated state for a long time to ensure that the concentration of hydrogen does not exceed 25%, and regularly check whether the connectors and plugs are loose. During the maintenance cycle, check whether the battery is intact and whether there
are any safety hazards.
11
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.
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 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.
5.3 Installation
5.3.1 Install the battery 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. 1) Place the V5° Plus along the wall. The vertical distance between batteries should be no less than 102mm, the horizontal distance should be no less than 102mm, the horizontal wall distance should be no less than 102mm, and the vertical wall distance should be no less than 25.4mm.The distance between battery and heat source (hot water system,gas heaters etc) shouldn’t be less than 500mm.
^ 25.4mm
V5° Plus from the top
Front
^ 102mm
13
^ 102mm
^ 102mm
4.3 Disposal
Disposal of the batteries should be in accordance with local laws and regulations and should be carried out by an expert with specialized knowledge and experience in electrical and environmental safety, at designated waste disposal facilities using safe and appropriate method.
5 Installation and configuration
5.1 Installation preparation
5.1.1 Safety Requirements
Only those who have received training in the power system and possess a comprehensive understanding 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 installation and configuration make sure that battery SOC shouldn’t be less than 30%. Before installing or removing the battery, make sure that the system is disconnected from any power 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.
5.1.2 Checking the operation environment
The operation environment must comply with the requirements outlined in Chapter 3, “Operation Environment.” If not, necessary adjustments must be made and subsequently reevaluated.
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 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: The exposed positive and negative insulated terminals may be charged, so you must wear insulating gloves when operating.
12
5.3.2 Connect Ground cable 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.The ground wire of multiple batteries after cascading is directly connected to the ground electrode interface of the distribution box.
Note: The grounding resistance should be less than 0.1.
5.3.3 Connecting the power cable
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
AWG
Area
(kcmil)
(mm²)
Standard Current cA
Max. Current cA
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
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. Connecting the power cables: 1)Power cable connection instructions of Single-Rack:
Single battery: Connect the positive and negative terminals of the battery to the battery port of the energy storage inverter with power cables.
Multiple batteries (Max number 16): 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 16 batteries can be connected in parallel, and a busbar or junction box should be used for convergence. The purpose of parallel connection: 1. To expand the capacity. 2. To increase the output current and power. 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 16 batteries can be connected in parallel and a busbar or junction box should be used for confluence.
Warning: Connecting batteries in series is forbidden, as it can create a high voltage that poses a hazardous shock risk.
14
Figure 5-1 Schematic diagram of power cable connection
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.
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 them to the energy storage inverter. It is recommended to add a circuit breaker for protection between battery system and inverter. Rated voltage U60V DC; Rated current to consider maximum DC current on inverter side. 5.3.4 Connecting communication cables 1)Communication cable connection instructions of Single-Rack:
Single battery: 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.
Multiple batteries (Max number 16): 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; The cascade communication line used to connect port0 and port1 does not need to set a terminal resistor.
Figure 5-2 Schematic diagram of communication cable connection
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 16 batteries or more than one rack)
Note: The system may not be able to communicate if not followed the instruction.
5.3.5 WIFI 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.
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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).
5.3.6 System Diagram
Router
Inverter
Cloud
Positive Power Cable
Communication Cable, V5° Plus to Inverter V5° Plus
Negative Power Cable
5.4 Procedure of starting/Shut down the whole system
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 DC Breaker of all batteries (V5° Plus). Step 2: Turn on all power buttons. Step 3: 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. Step 3: Turn off the DC Breaker(V5° Plus).
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. Note: For V5° Plus, if short-circuit happens for 3 times to the product, please contact PYTES to replace the DC Breaker.
—End of installation—
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6 Communication
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
6.1 RS232 port
Table 6-1 RS232 Connector Pin Assignments
Default baud rate of RS-232C ports: 115200bps.
Pin number RS-232C port 1
2
3
RXD
6.2 RS485 port and CAN port.
4
GND
5
Default baud rate of RS-485 port: 9600bps Default baud rate of CAN port: 500K
Table 6-2 RS485 and CAN Connector Pin Assignments
6
TXD
7
8
Pin number 1 2 3 4 5 6 7 8
Serial RS485B RS485A
GND
GND RS485A RS485B
CAN
CANH CANL
7 Troubleshooting
Please refer to the troubleshooting methods mentioned below. Please read the “Table 7-1 LED indication” 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.
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Battery status
Protection / ALM
Alarm /
Normal
Shut down
OFF
RUN
OFF
Capacity LED OFF
Table 7-1 LED indications
Descriptions
All off
Power-on Standby
Normal Normal Alarm
ON ON OFF Blink 1 Blink 3 OFF
ON OFF OFF
All lights stay on simultaneously for one second standby
Low voltage
Charging
Normal Alarm
OFF Light Blink 3 Light
Protection Light OFF
Normal OFF Blink 3 Discharge Alarm Blink 3 OFF
Protection Light OFF
Base on capacity OFF
Base on capacity OFF
Protection triggered, charging stops
Protection triggered, discharging stops
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”
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 this 1s duration
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 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.
7.2 Unable to charge
Problem
Troubleshooting Steps
Solution
The not fully charged battery cannot be charged properly.
1.Make sure the battery is powered off and remains in a stable state for 5 minutes.; 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.
If the battery still does not charge properly after following the steps, please contact the local reseller or Pytes.
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7.3 Unable to discharge
Problem
Troubleshooting Steps
Solution
The battery cannot be discharged properly.
1. Make sure the battery is powered off and remains in a stable state for 5 minutes. 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. 4Check 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.
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. 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.
Problem
Troubleshooting Steps
Solution
The ALM indicator remains in a constant state of red, while all other indicators remain inactive.
1.Make sure the battery is powered off and remains in a stable state for 5 minutes. 2.Check the power cables to ensure that they are properly connected. 3.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 if the ALM indicator is constantly on when the battery is properly charged after it is restarted, please contact your local reseller or Pytes.
Warning: Do not repair the battery if no authorization from Pytes! Battery cell cover can be removed without the use of a tool. However, the battery cover itself is prohibited to be removed after installation to access internal components.
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Customer Informaon
Contact Name
Phone Number
Address
Product Informaon
Baery Model Baery Quanty Purchase Date
Serial Number
Installer Informaon
Installer Name
Problem Descripon
Warranty Card
Email
Inverter Brand/Model Inverter Quanty Inverter Using Time on/off Grid Installation Date
Photos of Baery Wiring
Photos of Inverter Wiring and Panels
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Shanghai PYTES Energy Co., Ltd. Factory Address:No. 3492 Jinqian Road, Fengxian District, 201406 Shanghai,
PEOPLE’S REPUBLIC OF CHINA Tel+86 21 5747 5800
Emailess_support@pytesgroup.com
The right of interpretation belongs to Pytes Energy
Documents / Resources
 | Pytes V Series LFP Battery [pdf] User Manual V5 Plus, V Series 1.8, 20250807, V Series LFP Battery, V Series, LFP Battery, Battery |