Felicitysolar LiFePO4 Battery System for Households User Guide

1 About This Manual

1.1 Purpose

This manual describes the introduction, installation, operation, and emergency situations of the battery bank. Please read this manual carefully before installations and operations. Keep this manual for future reference.

1.2 Scope

This manual provides safety and installation guidelines, as well as information on tools and wiring.

1.3 Safety Instructions

WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.

• Before using the unit, read all instructions and cautionary markings on the unit, the batteries, and all appropriate sections of this manual.
• CAUTION: To reduce the risk of injury, damage, or even burst, please use it following the manual. In case of causing personal injury or damage, Felicitysolar is not responsible.
• Do not disassemble the battery. Take it to a qualified service center when service or repair is required. Incorrect re-assembly may result in a risk of fire.
• To reduce the risk of electric shock, disconnect all wiring before attempting any maintenance or cleaning. Turning off the unit will not reduce this risk.
• CAUTION: Only qualified personnel can install this device with an inverter.
• For optimum operation of this battery, please follow required specifications to select the appropriate cable size.
• Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool that could spark or short-circuit batteries or other electrical parts, potentially causing an explosion or fire.
• Please strictly follow the installation procedure.
• GROUNDING INSTRUCTIONS: This System should be connected to a permanent grounded wiring system. Be sure to comply with local requirements.
• NEVER cause AC output and DC input to short-circuit. Do not connect to the mains when DC input is short-circuited.
• Warning!! Only qualified service persons are able to service this device.
• Battery should be installed indoors and kept away from water, high temperature, mechanical force, and flames.
• Do not install the battery in any environment with temperatures below 0°C or over 55°C, and humidity over 80%.
• Do not put any heavy objects on the battery.

1.4 Can be connected in parallel

• The batteries can be connected in parallel. Series connection is not allowed.
• The batteries are not allowed to be connected with a PWM controller for charging.
• Special Attention: Due to the built-in protection board of the lithium battery pack having an over-discharge protection function, it is strongly recommended to stop using the load when the battery pack is over-discharged. The battery pack cannot be repeatedly activated for discharge. If it is, the battery may fail to be activated by the AC or PV activation cable (requiring a special charging activation method) and thus cannot be charged. Therefore, when the battery pack is low power, please charge the battery as soon as possible when main power or solar energy is available.

2 Introduction

The battery system is primarily used with solar power systems for family houses. It also provides control over the battery and protects household applications timely.

2.1 Features

• Iron phosphate-lithium power battery.
• Long warranty period: 5 years.
• Higher energy density, smaller volume for household use.
• Supports connection in parallel mode for expansion.
• Photovoltaic system: This battery pack is designed for household photovoltaic systems.
• Battery management system (BMS): The battery pack's built-in BMS monitors its operation and prevents the battery from operating outside design limitations.
• Expandability: This battery pack can be easily expanded by adding expansion battery packs in parallel connection.

2.2 Product Overview

The front view of the Felicitysolar LiFePO4 Battery System (LPBA48170) shows the following components:

• 1. LED display
• 2. Power On/Charging indicator
• 3. Communication port
• 4. SW (DIP Switch)
• 5. Battery Positive (+) terminal
• 6. Battery Negative (-) terminal
• 7. Earth wire connection
• 8. Handle
• 9. Wall mounted fixing points

2.3 Specifications

2.4 Recommended Settings

Lithium battery packs differ from lead-acid batteries. For devices connected to the battery pack for charging or discharging, such as inverters, MPPT charge controllers, or UPS, please implement the following pre-settings before operation.

Notes: "N" means the number of battery packs connected in parallel.

3 Installation

3.1 Unpacking and Inspection

Before installation, please inspect the unit. Ensure that nothing inside the package is damaged. You should have received the following items:

3.2 Mounting the Unit

Consider the following points before selecting an installation location:

• Do not mount the battery on flammable construction materials.
• The ambient temperature should be between 0°C and 45°C to ensure optimal operation.
• The recommended installation position is vertical against the wall.
• Ensure sufficient heat dissipation and space for wire removal by maintaining clearances as shown in the diagram.

Clearance requirements (dimensions in MM):

3.3 Connection for Parallel Mode

The LPBA battery supports parallel connection for expansion. To connect multiple battery banks in parallel, follow the diagrams.

Step 1: Position the batteries as shown in Figure 1.

Step 2: The schematic diagram of the parallel connection of two battery packs is shown in Figure 2.

Step 3: The schematic diagram of the parallel connection of six battery packs is shown in Figure 3.

Step 4: Connect the communication terminals as shown in Figure 4. A single communication line (network cable) is required between batteries; an additional line can serve as a backup.

Note: After completing the steps, select the positive and negative terminals of one battery pack for output. Do not select terminals from different battery packs simultaneously. After confirming correct connections for the inverter, controller, and battery, turn on the switches to use the battery group.

Note: One group of LPBA48V can be stacked up to 2 layers and connected in parallel up to 12 units.

For pure off-grid systems, the PV wake-up wire must be connected to the MPPT charge controller if the battery pack is charged solely by solar panels. Refer to the connection diagram.

4 Operation

Once the batteries are connected, press the On/Off button to enable the battery pack's output.

4.1 Switch On/Off

To switch on: Press the On/Off button. The battery will perform a self-inspection before enabling output. The LEDs will indicate the State of Charge (SOC).

To switch off: Press and hold the On/Off button for 3 seconds. The battery will shut down directly.

Description for Communication port

4.2 Description for LED

The SOC of the battery is indicated by the LEDs:

• 100%
• 75%
• 50%
• 25%
• Flashing SOC <10%

Note: To ensure accurate SOC calculation, the battery should be fully charged at least once a month.

4.3 ON/OFF or SOC Led (Mode or SOC)

4.4 DIP switch SW1-SW4 Description

DIP switch SW1-SW4 Description:

DIP switch SW5 Description:

Remark: 1 in SW1-SW5 indicates ON status, and 0 indicates OFF status.

Remark: When multiple battery packs communicate, the last battery pack's SW5 needs to be in the ON status, otherwise, the communication may have interference.

Remark: When the battery pack ID is set to 0, it means stand-alone operation, and it is not necessary to detect whether the parallel condition is satisfied.

Remark: When the battery pack ID is set to 1-15, it means that parallel operation is required, and it is necessary to detect whether the parallel condition is satisfied.

Remark: The parallel condition is that the difference between the battery voltage of the local battery and all the battery pack voltages is <3V, otherwise, wait until the condition is satisfied.

5 Emergency Situations

Felicitysolar cannot guarantee absolute battery safety.

5.1 Fire

In case of fire, ensure the following equipment is available near the system:

• SCBA (self-contained breathing apparatus) and protective gear in compliance with the Directive on Personal Protective Equipment 89/686/EEC.
• NOVEC 1230, FM-200, or dioxide extinguisher.
• Batteries may explode when heated above 150°C. KEEP FAR AWAY from the battery if it catches fire.

5.2 Leaking Batteries

If the battery pack leaks electrolyte, avoid contact with the leaking liquid or gas. If exposed to the leaked substance, immediately perform the following precautions:

• Inhalation: Evacuate the contaminated area and seek medical attention.
• Contact with eyes: Rinse eyes with running water for 5 minutes and seek medical attention.
• Contact with skin: Wash the affected area thoroughly with soap and water and seek medical attention.
• Ingestion: Induce vomiting and seek medical attention.

5.3 Wet Batteries

If the battery pack is wet or submerged in water, do not allow people to access it and contact your supplier for assistance.

Damaged Batteries: Damaged batteries are unsafe and dangerous. Handle with extreme care. They may leak electrolyte or produce flammable gas. If a battery pack appears damaged, pack it in its original container and return it to your supplier.

5.4 Warranty

Products operated strictly in accordance with this user manual are covered by warranty. Violating this manual may void the warranty.

Limitation of Liability

Felicitysolar is not liable for any product damage or property loss caused by the following conditions:

• Product modification, design change, or parts replacement.
• Changed or attempted repairs, and erasure of series number or seals.
• System design and installation not in compliance with standards and regulations.
• The product has been improperly stored in the end user's premises.
• Transport damage (including painting scratches caused by movement inside packaging during shipping). A claim should be made directly to the shipping or insurance company.