PowMr POW-LIO48 Wall Mounted Lithium Iron Phosphate Battery User Manual

PowMr POW-LIO48 Wall Mounted Lithium Iron Phosphate Battery

Specifications

• Product Name: POW-LIO48 Series
• Models: POW-LIO48100-16S, POW-LIO48200-16S
• Manufacturer: PowMr
• Compatibility: Compatible with various inverter brands
• Application: Low-voltage residential energy storage
• Battery Type: Lithium
• Communication Interfaces: CAN, RS485, dry contact
• Maximum Balancing Current: 300mA

Product Introduction

Overview
The POW-LIO48 Series consists of low-voltage residential energy storage batteries developed by PowMr. These lithium battery systems are designed to be used in residential energy storage applications and are compatible with different inverter brands available in the market.

• Intended Audience
  This manual is intended for professional technical personnel involved in the installation, operation, and maintenance of lithium batteries, as well as end-users seeking technical information.

Manual Usage

1. Carefully review this user manual before using the product and keep it accessible.
2. All content in this manual is proprietary to PowMr. Unauthorized use is prohibited.
3. Refer to the provided documentation as a reference, and for updates, check the latest user manual on the official website.

Safety Instructions
Labeling Explanation

• To ensure user safety during product use, relevant labeling information with appropriate symbols is provided in this manual.
• Symbols may include warnings for over-temperature, overvoltage, and over-current situations.

Product Usage Instructions

Installation

1. Ensure the battery system is compatible with your inverter brand.
2. Follow the installation guidelines provided in the user manual for proper setup.
3. Connect the battery module using the specified communication interfaces (CAN, RS485, dry contact).

Operation

1. Monitor the battery system using the embedded BMS for any abnormal conditions.
2. Ensure proper ventilation around the battery system to prevent overheating.
3. Follow the recommended charging and discharging procedures to maintain battery health.

Maintenance

1.  Regularly inspect the battery system for any signs of damage or wear.
2. Clean the external surfaces of the battery modules as needed.
3. Contact customer service for any troubleshooting or maintenance queries.

FAQ

• Q: How many batteries can be connected in parallel?
  A: Up to 16 batteries can be connected in parallel for communication.

• Q: What is the maximum balancing current supported by the module?
  A: The module supports a maximum balancing current of up to 300mA.

Product Model POW-LIO48100-16S POW-LIO48200-16S
Wall-mounted Lithium Iron Phosphate Battery

Overview

1. Scope
   This user manual provides information, operating instructions, and maintenance guidelines for the POW-LIO48100-16S and POW-LIO48200-16S low-voltage residential energy storage battery series. The POW-LIO48 residential energy storage series is a lithium battery system developed by PowMr, designed to be compatible with various inverter brands available in the market.

2. Intended Audience
   This manual is intended for professional technical personnel involved in the installation, operation, and maintenance of lithium batteries, as well as end- users seeking technical information.

3. Manual Usage

4. Before using the product, carefully review this user manual and keep it in a readily accessible location.

5.  All information in this user manual, including images and symbols, is proprietary to PowMr. Unauthorized use of any part or all of the content is strictly prohibited for individuals outside the company.

6. Considering the potential for updates and corrections to the manual content, users are advised to use the provided documentation as a reference. For the latest user manual, please refer to the product documentation provided or contact customer service through the official website.

 Product Introduction

Introduction

1. The POW-LIO48 residential energy storage series is a battery module developed by PowMr for low-voltage lithium battery systems, primarily applied in the field of residential energy storage. It can achieve high-precision multi-cell voltage and temperature acquisition.
2.  The module adopts a passive balancing method, with a maximum balancing current of up to 300mA, improving the overall lifespan of the battery pack.
3. The module features external communication interfaces using CAN, RS485, and dry contact communication methods, allowing communication in parallel for up to 16 batteries.
4. Embedded BMS system effectively monitors phenomena such as over-temperature, over-voltage, and over-current, reducing the risk of battery damage or even fire, ensuring the safety of life and property.
5. This manual introduces the types, sizes, performance, technical characteristics, warnings, and precautions of lithium battery systems. This specification is only applicable to the battery systems provided by PowMr.

 Safety Instructions

Labeling Explanation
To ensure user safety during product use, relevant labeling information with appropriate symbols is provided in this manual. The following lists symbols that may be used in this manual, so please read carefully.

minor or moderate injury to personnel.
| Indicates the presence of high voltage inside the battery module. Touching may lead to electric shock hazards.
| This is the ground protection port (PE). It should be securely grounded to ensure the safety of operating personnel.

Installation Tools
Prior to installation, prepare the following tools:

Precautions
Manual Storage

1. This manual covers crucial information for the POW-LIO48 Home Energy Storage Series. Prior to operating the product, carefully read this manual as it provides essential assistance in acquainting you with the product.
2. Store this manual securely for the convenience of relevant installation and maintenance personnel to refer to during operations.
3. Strictly follow the descriptions in this manual when operating the PowMr Home Energy Storage Series to avoid equipment damage, injuries, property loss, and other potential issues.

Label Protection

1. Warning labels on the POW-LIO48 Home Energy Storage Series contain crucial safety operation information. It is strictly prohibited to intentionally tear or damage them!
2. The product has a nameplate on the casing, providing essential parameter information. It is strictly prohibited to intentionally tear or damage it!

Safety Warning Labels
When conducting installation, routine maintenance, inspections, etc., on the POW-LIO48 Home Energy Storage Series, to prevent unauthorized individuals from approaching, engaging in improper operations, or accidents, adhere to the following conventions:

1. Erect clear signage at the switch locations of the PowMr products to prevent accidents caused by accidental closing.
2. Set warning signs or establish safety warning tape near the operating area to prevent unrelated personnel from approaching.
3. After maintenance or inspection, conduct a thorough on-site safety check.

Personnel Requirements

1.  Only personnel with relevant professional qualifications are allowed to perform various operations on this product.
2. Operating personnel should be thoroughly familiar with the composition and working principles of the entire POW-LIO48 Home Energy Storage Series system.
3. Operating personnel should be fully acquainted with the “User Manual” for this product.

Power-On Measurement

• After the energy storage battery is installed, there is a high voltage present, and accidental contact with the positive and negative terminals may result in electric shock injuries. Therefore, when conducting power-on measurements, attention should be paid to the following:

  1. Take necessary insulation protection measures (such as wearing insulated gloves).
  2.  Accompanying personnel must be present to ensure personal safety.

• Measuring Instruments
  When performing electrical connections and trial operations on the energy storage backup battery, and to ensure that electrical parameters meet requirements, relevant electrical measuring equipment such as multimeters, power meters, etc., should be used. Note the following:

  1. Use measuring equipment with a suitable range that conforms to on-site working conditions.
  2. Ensure the correct and standardized electrical connections of the instruments to avoid dangers such as electric arcs.

Maintenance and Inspection

• When both the energy storage battery and the inverter are turned off, and electrical connections are confirmed to be disconnected, maintenance or inspection operations can be carried out on the energy storage battery cabinet. Pay attention to the following:
  1. Ensure that the energy storage battery will not be accidentally re-energized.
  2. Use a multimeter to ensure that the energy storage battery is completely de-energized.
  3. For parts near potentially live components during operations, use insulating materials for insulation covering or grounding.
  4. It is strictly prohibited to perform maintenance or inspection operations on live equipment!When performing maintenance or inspection on equipment, it must be ensured that at least two personnel are present at the site. Maintenance operations can only be carried out after the equipment is safely de-energized, fully charged, or discharged.

Overview of Main Components

Product Introduction

Overview
The POW-LIO48 household energy storage series lithium battery module integrates PowMr’s high-capacity, high-safety lithium iron phosphate battery cells. It adopts a stacked design with advantages in footprint and vertical space utilization. The module incorporates a high-precision Battery Management System (BMS) unit, monitoring and collecting real-time data on voltage and temperature inside the module. This enables intelligent temperature control at the cell level and smart cell balancing, enhancing system efficiency and battery cycle life. The module features a shock-resistant structure within a cold-rolled sheet metal shell for high safety and reliability, meeting household standards. Additionally, the module is designed for high stability and disturbance resistance, ensuring the safe and reliable operation of the battery system.
Advantages

• The positive electrode material of the battery is lithium iron phosphate (LiFePO4) material, which has good safety performance, has a cycle life of more than 6,000 times.
• The high-performance intelligent management system is adopted to realize comprehensive state control of battery charging, discharging, floating charging and hibernation, and multi-level protection is set for voltage, current, temperature, etc., so that the battery is always in an ideal state.
• It has a comprehensive monitoring system to monitor the voltage, current, temperature, capacity and working status of the battery.
• The system adopts an intelligent design method to meet the four remote control standards of the national standard: telemetry, remote signaling, remote control, and remote adjustment.
• Built-in intelligent balance module to ensure the capacity consistency of the battery pack during long-term use and prolong the service life.
• The control panel includes status display and alarm devices, which can visually see the working status and alarm information of the battery.
•  The system has its own intelligent thermal management device, which can work in a wide temperature range.

Product Appearance

Port Panel

seconds.
4| DIP Switch (ADS)| Define Battery Communication Code|
5| Dry Contact| Dry Contact Communication|

• 1. Dry Contact 1 – PIN1 to
• PIN2: Normally open, closed during fault

| | | protection; 2. Dry Contact 2 – PIN3 to PIN4: Normally open, closed during low battery alarm.
---|---|---|---
6| ON/OFF| Power Switch| Used for powering on or off the battery supply.

7

| Power Light (PWR)| Power Indicator Light| The indicator light lights up after powering on.

8

| Operation Light (RUN)| Battery Operation Indicator Light| The signal light illuminates once the battery is operating normally.

9

| Alarm Light (ALM)| Battery Alarm Indicator Light|

10

| Capacity Light (SOC)| Battery Capacity Indicator Light|
11| RS485A| 485 Communication Interface| Communication with inverter via RS485
12| CAN| CAN Communication Interface| Communication with inverter via CAN
13| RS232|

1. Monitor batteries and modify parameters.
2. Perform software upgrades.

|
14| RS485B| Communication between batteries.| Functions are the same, no distinction between left and right.
15| Ground Terminal Port| Battery Ground|

Principle and Structure

1. Operating Principle
   Working principle for Residential Lifepo4 Battery Energy Storage System: Connect battery pack in parallel to the DC output end of the inverter of the energy storage device. When the mains power supply is normal, the inverter module works normally to supply power to the equipment (the load in the figure) and charge the battery pack; when the utility power and photovoltaic power are cut off, the battery pack provides uninterrupted power supply to the inverter to ensure the normal operation of household electricity; When power is turned on again, the battery pack is charged while power is restored to the household loads.

2. Connection Structure
   The connection diagram of residential lifepo4 battery energy storage system is shown in Figure below:

 Battery Installation and Wiring

The following table outlines the operational procedures:

there is no electric in installation process.
2| Mechanical installation| 1. Mounting lugs installation
2. Battery fixed installation
3| Electrical installation| 1. Grounding cable
2. Power cable installation
3.  Connecting equipment installation
4.  Communication cable installation
4| Electrical commissioning| Power system commissioning

1. Tool Preparation for Installation
   Tools Required: Electric drill, hammer, wrench, M8*60 expansion bolt, Phillips screwdriver, multimeter, insulated gloves, Ethernet cable, power cable.

2. Installation Preparation

   • Safety Regulations
   • The installation, operation and maintenance of LiFePO4 Battery Energy Storage System should only be carried out by trained and qualified professionals. Before installation and use, please read the safety precautions and related operating procedures of this product carefully. The installation process must strictly abide by the following safety regulations and local safety regulations, otherwise it may cause personal injury or product damage.
   • Please ensure that the inverter connected to the battery is a qualified power system;
   • When installing the battery, please ensure that the power system is turned off and the battery pack is turned off;
   • All power-saving cables must have corresponding insulation measures, and it is strictly forbidden to expose the power cord;
   • Ensure that the battery and the power system are reliably grounded during installation.

3. Installation Notes
   When begin to install the battery system, you should pay attention to the following matters:

   • Installation space and load bearing. Make sure that there are sufficient fixed components to install the battery system, and to ensure that the battery mounting bracket or the cabinet be strong enough to bear the weight.
   •  Cable specifications. To ensure that the use of the connection of the power supply line can meet the maximum current requirements of equipment operation.
   • Project layout. Ensure the whole construction process of power equipment, batteries and other reasonable layout.
   • Wiring layout. Ensure that the wiring reasonable, orderly; and consider the moisture-proof, corrosion prevention.
   • The whole installation process should wear anti-static wristband.
   • The installation site should be at least two or more peoples to operate.
   •  Please ensure the installation site safe before installation.

4. Installation Steps
   Below are the steps for quick wall-mounted installation:

   • Select a suitable solid wall with a thickness greater than 150mm;
   • Leave approximately 200mm clearance around the left, right, top, and bottom of the battery to ensure sufficient airflow around the battery;
   • Secure wall bracket A to the battery using 8 dedicated screws;
   • Refer to the fixing distance of the wall-mount bracket B bolts, and mark the hole position on the wall;
   • Drill 6 holes according to the hole position, the depth is ≥80mm;
   • Mount the M8 expansion bolts in the upper holes and screw on the nuts;
   • Fix the mounting bracket on the wall with expansion bolts;
   • Under the condition of keeping the battery vertical, raise the battery to a position slightly higher than the mounting bracket, and hang the battery on the mounting bracket.

Step 1. Interruption Of Power Supply
Before installation, please ensure the battery is powered off, at the same time, shutdown the equipment which need to connect to the battery.
Step 2. Machinery Installation

1. Installation of the brackets. Mount the wall bracket securely onto the wall, then hang the battery onto the wall bracket. Ensure that the installation surface is solid and reliable, and that the battery is securely mounted.
   Note: The POW-LIO48100-16S and POW-LIO48200-16S wall brackets differ in structure, but the wall mounting principle remains consistent.

2. Expansion bolt installation diagram.

3.  Fixed battery installation. Mount the battery on the wall and ensure that the battery is securely and safely installed.

NOTICE:

1. In order to avoid electric shock or other injuries, check whether the existing electronic plumbing installation is compliant before drilling.
2. The battery is heavy, please handle it with care, so as not to damage the product or injure the installer.

Electrical Connection

Single Unit Wiring :

• Step 1. Connect the positive and negative terminals of the battery to the positive and negative terminals of the inverter using the power cable.

• Step 2. Complete the battery’s grounding connection by using the ground wire.

• Step 3. Connect the RS485A (or CAN) port of the battery to the RS485 (or CAN) communication port of the inverter using the communication cable.

• Step 4. If used as a single unit, set the ADS dip switch to 1. Refer to section 8.3 for dip switch  rules.

• Parallel Wiring :
  Step 1. If multiple batteries are used in parallel, manually press the low- voltage switch (ON/OFF) first. Use a multimeter to check if the voltage of each battery is consistent. If consistent, turn off the batteries and proceed with cable connections, as shown in the schematic diagram (using two batteries in parallel as an example).

• Step 2. Connect the positive terminal of the battery using the power cable, and then connect the negative terminal of the battery using the power cable.

• Step 3. Connect the RS485B communication interface of adjacent batteries with communication cables (RS485B battery parallel ports have the same functionality and are not distinguished).

• Step 4. Connect the ground wire to the grounding point for all batteries. There is a ground symbol in the lower-left corner of the battery; attach the ground wire terminal to this point.

• Step 5. Use a standard Category 6 cable. Connect one end to the RS485A (or CAN) communication interface of the battery and the other end to the RS485 (or CAN) interface of the inverter (Note: the  pin definition of the inverter communication should match that of the battery; refer to section 8.3 for battery-to-inverter pin definitions). \

• Step 6. Connect the positive terminal (+) of the first battery to the positive terminal interface of the inverter using the power cable. Then, connect the negative terminal (-) of the last battery to the negative terminal interface of the inverter using the power cable.

Note

• The battery directly connected to the inverter via the communication cable is defined as the host. The host dip switch is set to 1 and needs to be switched before powering on.
•  Define dip switches for other batteries sequentially from 2 to 15. Avoid duplicating dip switch settings to 1.

Debugging

RS485 & CAN Port Definition 

1. Definition of RS485A port (default baud rate 9600bps) for communication between the battery and the inverter.
   Note:

   • The default RS485 protocol for the battery is set to Pylontech RS485 (V3.5) protocol. If compatibility with other inverters is needed, it is necessary to communicate through RS232 with the host computer to change the default protocol.

2.  Definition of CAN port (default baud rate is 500K) for communication between the battery and the inverter.

• Note:
  The battery is factory-set with the default CAN protocol, defaulting to Pylontech CAN protocol. If compatibility with other inverters is required, it is necessary to communicate through RS232 with the upper computer to change the default protocol.

• Tip:
  For battery and inverter communication, choose either RS485 or CAN.

Upper Computer Software Operation Guide
Modifying Battery Parameters and Selecting Inverter Protocol via RS232 Upper Computer

Tools

• Computer
• USB to RS232 Cable
• Monitoring Software

Operating Steps

1. Connect the computer to the battery using a USB to RS232 cable. Plug the USB end into the computer’s USB port and the other end into the battery’s RS232 port.
2. Download and unzip the software package on the computer.
3. Open the extracted folder and select the application, as shown below:
4.  Double-click the above icon to enter the monitoring interface, as shown below:
5. After entering the monitoring interface, click on the top right to open the serial port. Once communication with the battery is established, the left side will display real-time battery information, and the status bar in the lower right will turn green.
6. After successful communication, enter the password “123456” in the lower right password status bar. Upon correct input, the status bar will turn green.
7.  Left-click on “System Config,” as shown below:
8. In the middle-right part of the display interface (Inverter Protocol), click “Read” to check if the battery matches the actual inverter brand. If not, click on the CAN or 485 protocol and choose the protocol that matches the inverter, as shown below:
9.  After selecting the protocol, click the “Write” button. If the write fails, it indicates that the BMS does not include this inverter protocol, and a program upgrade is required. If the write is successful, click “Read” again to verify the selected protocol.

ADS DIP Switch Definitions

Battery Parallel Connection DIP Switch Diagram

Power-On Sequence
After the completion of the connections between the inverter, battery, and mains power, start each battery one by one. Then, turn on the inverter. After the battery startup, check if the communication between the inverter and the battery is normal. If the battery data is successfully uploaded to the inverter, it indicates successful communication between the inverter and the battery.
Common Issues and Solutions

after Charging Activation
**** 2| Short Power Supply Time| Insufficient Battery Capacity or Failure to Reach Full Charge| Confirm Maintenance or Replace Battery

3

| Battery Cannot Reach Full Charge| DC Voltage Output from Power System Lower than Minimum Charging Voltage| Adjust Device’s DC Output Voltage to Suitable Charging Voltage for Battery
**** 4| Unstable Battery Output Voltage with Significant

Fluctuations

| Interference with Management System Operation| Restart the System
5| Temperature Monitoring Too Low| **** Damage to Temperature- Sensing Crystal Head| Replace the Collection Line

with a Temperature-Sensing Crystal Head

6

| Unable to Charge| Single Cell Protection Activated upon Full Battery Charge| Discharge Protection Removal

7

| MOS temperature abnormal| MOS tube damaged| Replace BMS
8| Discharge overcurrent protection| Inverter power exceeds limit| Match the number of batteries according to the inverter power value

Inverter Matching Information

Maintenance

1. Do not immerse the battery in water. When not in use, store it in a cool and dry environment.
2. Do not throw the battery into the fire or heat it externally to avoid explosion or other hazards.
3.  Do not invert the positive and negative poles of the battery. Never connect the battery directly to a power outlet, and prohibit short-circuiting the positive and negative poles.
4. Do not mix batteries from different manufacturers, different kinds, types, or different ages.
5.  Do not use batteries that show signs of heating, swelling, deformation, or leakage in charging or discharging devices.
6. Prohibit piercing the battery with nails or other sharp objects, as well as throwing, stepping on, hitting, or impacting the battery.
7. Prohibit disassembling or dismantling the battery and its components. Any damage caused by unauthorized disassembly or repair will not be the responsibility of our company.
8. The battery undergoes strict inspection before leaving the factory. If customers find signs of heating, swelling, or unusual odors, do not use it and return it to the factory immediately.
9. For long-term storage, to ensure optimal battery performance, perform a charge-discharge cycle every three months and ensure a storage charge of 40%~60%.
10. Use the battery within the specified temperature range as stated in the specification.
11. Follow the specified power-up sequence for both the battery and the inverter.
12. The recommended load power for the battery should not exceed the maximum continuous discharge current of the battery.
13.  If the battery is left unused for more than 3 months, it needs manual charging periodically to prevent complete discharge.

Note: In case of specific technical issues or situations not mentioned above, please contact technical support promptly.

Technical Specifications

SHENZHEN HEHEJIN INDUSTRIAL CO., LTD

• Tel/Fax: +86 755-28219903
• Email: support@powmr.com
• Web: www.powmr.com
• Add: Henggang Street, Longgang District, Shenzhen, Guangdong, China

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