PowMr POW-LIO48 Series

1 Overview

1.1 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.

1.2 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.

1.3 Manual Usage

1. Before using the product, carefully review this user manual and keep it in a readily accessible location.
2. 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.
3. 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.

2 Product Introduction

2.1 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.

3 Safety Instructions

3.1 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.

3.2 Installation Tools

Prior to installation, prepare the following tools:

3.3 Precautions

3.3.1 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.

3.3.2 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!

3.3.3 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.

3.3.4 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.

3.3.5 Power-On Measurement

DANGER

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.

3.3.6 Measuring Instruments

WARNING

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.

3.3.7 Maintenance and Inspection

WARNING

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.

4 Overview of Main Components

5 Product Introduction

5.1 Overview

The POW-LIO48 household energy storage series lithium battery module integrates PowMr's highcapacity, 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.

5.2 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.

5.3 Product Appearance

The product is a wall-mounted battery unit. Key components are labeled:

• 1: Function Keys (Buttons for menu navigation)
• 2: LCD Screen (Displays status and information)
• 3: M6 Positive Terminal (For positive power connection)
• 4: M6 Negative Terminal (For negative power connection)
• 5: Power Switch (ON/OFF button)
• 6: Bottom Port Panel (Area containing various connection ports)
• 7: Installation Backplate (Component for wall mounting)
• 8: Handle (For carrying or maneuvering the unit)

5.4 Port Panel

The rear panel of the battery unit features various ports:

6 Principle and Structure

6.1 Operating Principle

The working principle for the Residential LiFePO4 Battery Energy Storage System is as follows: The battery pack is connected 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) 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.

6.2 Connection Structure

The connection diagram illustrates the residential LiFePO4 battery energy storage system:

7 Battery Installation and Wiring

The following table outlines the operational procedures:

7.1 Tool Preparation for Installation

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

7.2 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.

7.3 Installation Notes

When beginning to install the battery system, pay attention to the following matters:

• Installation space and load bearing: Ensure sufficient fixed components and that the battery mounting bracket or cabinet is strong enough to bear the weight.
• Cable specifications: Ensure the power supply line connection meets the maximum current requirements of equipment operation.
• Project layout: Ensure a reasonable layout for power equipment and batteries.
• Wiring layout: Ensure wiring is reasonable, orderly, and consider moisture-proof, corrosion prevention.
• The entire installation process should involve wearing an antistatic wristband.
• The installation site should have at least two people operating.
• Please ensure the installation site is safe before installation.

7.4 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.

Step 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.

7.5 Electrical Connection

Single Unit Wiring:

1. Connect the positive and negative terminals of the battery to the positive and negative terminals of the inverter using the power cable.
2. Complete the battery's grounding connection by using the ground wire.
3. Connect the RS485A (or CAN) port of the battery to the RS485 (or CAN) communication port of the inverter using the communication cable.
4. If used as a single unit, set the ADS dip switch to 1. Refer to section 9.3 for dip switch rules.

Parallel Wiring:

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).
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.
3. Connect the RS485B communication interface of adjacent batteries with communication cables (RS485B battery parallel ports have the same functionality and are not distinguished).
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.
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 9.3 for battery-to-inverter pin definitions).
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.

8 LCD Screen Operation Guide

You can scan the QR code on the right to view the LCD display screen operation guide. (QR code excluded as per instructions).

8.1 Button Overview

8.2 Screen Overview

The LCD screen displays information organized into menus:

9 Debugging

9.1 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.

9.2 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.

4. Double-click the above icon to enter the monitoring interface.

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.

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.

9.3 ADS DIP Switch Definitions

The following table defines the DIP switch settings for different addresses:

9.4 Battery Parallel Connection DIP Switch Diagram

The following diagrams illustrate DIP switch configurations for parallel battery connections, from 1 to 16 batteries. Each diagram shows a set of DIP switches for a specific battery number, indicating the ON/OFF positions for each switch (#1 to #4) to configure its address in the parallel system.

9.5 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.

9.6 Common Issues and Solutions

9.7 Inverter Matching Information

The following table lists compatible inverters and their communication settings:

10 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.

11 Technical Specifications