Felicity Solar LiFePO4 Battery System 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 risk of injury, damage, or burst, please use it following the manual. In case of causing personal injury...
• 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 risk of electric shock, disconnect all wirings 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 appropriate cable size.
• Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause 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 short circuits. Do not connect to the mains when DC input short circuits.
• 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 temperature 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

1. The batteries can be connected in parallel. Series connection is not allowed. Use in upright position only.

2. The batteries are not allowed to be connected with 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, or the battery may fail to be activated by the AC or PV activation cable (it requires a special charging activation method), so it 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

2.1 Features

• Iron phosphate-lithium power battery
• Long warranty period: 5 years
• Higher energy density, smaller volume for household use.
• Support connected 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 Over View

The Felicity Solar LiFePO4 Battery System is designed for household photovoltaic systems, offering easy battery control and protection for household applications.

Unit Description: The unit is a white rectangular enclosure. The front panel features an LCD display, a Power On/Charging indicator light, and a switch. Connection terminals for battery positive, battery negative, and earth wire are located on the unit. A communication port is also present.

48V Front View Components:

• 1. LCD display
• 2. Power On/Charging indicator
• 3. Battery Negative terminal
• 4. Battery Positive terminal
• 5. Switch
• 6. Communication port
• 7. Earth wire terminal
• 8. Wall mounted fixing points

3 INSTALLATION

3.1 Unpacking and Inspection

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

3.2 Mounting the Unit

Consider the following points before selecting where to install:

• 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 to be adhered to the wall vertically.
• Be sure to keep other objects and surfaces clear as shown in the diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.

Unit Dimensions (LPBF48100-M):

• A: 85 mm
• B: 240 mm
• C: 123.5 mm
• D: 301 mm
• E: 223 mm
• F: 301 mm
• G: 99.5 mm
• H: 135 mm
• I: 140 mm

[Diagram showing unit dimensions with labels A through I]

3.3 Connection for Parallel Mode

Please follow below steps to implement battery connection:

Assemble battery ring terminal based on recommended battery cable and terminal size.

Note: If you need the battery wake-up when the grid is back, connect the battery with the grid use power adapter and communication line 1 shown in the package list.

The eStrong LPBF series battery supports parallel connection for expansion. If you need one more battery bank to work in parallel mode, connect the batteries as shown in PIC 2.

Step 1: The batteries are placed as shown in Figure 1. [Description of Figure 1: Batteries placed in position]

Step 2: The schematic diagram of the parallel connection of two battery packs is shown in Figure 2. [Description of Figure 2: Two batteries connected in parallel with main circuit and communication lines]

Step 3: The schematic diagram of the parallel connection of six battery packs is shown in Figure 3. [Description of Figure 3: Six batteries connected in parallel]

Note: After completing the above steps, arbitrarily select the positive and negative poles of one of the battery packs to output (the upper battery pack or the lower battery pack; you cannot select the positive and negative poles of two battery packs at the same time). After confirming the correct connection of the inverter, controller, and battery, you can turn on any of the switches and use the battery group.

Note: One group of LPBF can be stacked up to 2 layers, and up to 6 in parallel connection.

For pure off-grid systems, the PV awake wire needs to be connected with an MPPT charge controller if the battery pack is charged by solar panels only. The connection diagram is shown below. [Description of diagram: PV awake wire connection to MPPT charge controller]

4 OPERATION

4.1 Switch On/Off

Once the batteries are connected well, simply press the On/Off button to enable the output of the battery pack.

[Image of the unit front with the On/Off button highlighted]

1. Switch on: Press the On/Off button to switch on the battery. The battery will perform a self-inspection before enabling output.
2. Switch off: Press and hold the On/Off button for 3 seconds; the battery will shut down directly.

Description for Communication port (PIN assignments):

DIP SWITCH

4.2 LCD Display Icons

The LCD display provides information on battery status.

4.3 BMS information Page

The basic information will be displayed in turn after power on.

BMS power on information:

BMS Type: Eg: BMS model is "48200", "3" is the countdown. [Display: 48 200 3]

BMS charge voltage / current: Eg: "57.6V" /"80A" refers to charging cut-off voltage and charging limit current, "2" is the countdown. [Display: 57.6 V 80 A 2]

BMS discharge voltage / current: Eg: "48.0V" / "80A" refers to discharging cut-off voltage and discharging limit current, "1" is the countdown. [Display: 48.0 V 80 A 1]

BMS data: Eg: "52.0V" / "3.90KW" / "70%" refers to battery voltage, power, and SOC. [Display: 52.0 V 3.90KW 70%]

BMS fault code / flag: Eg: "52.0V" / "C09" / "70%" are battery voltage, fault code, and SOC respectively, and Fault icon is constant. [Display: 52.0 V C09 70%]

BMS address / version: Eg: "A01" is the dial address; "410" is the software version; "4" is the countdown. [Display: A01 410 4]

4.4 Fault Code Table

4.5 DIP switch SW1-SW4 Description

Remarks:

• 1 in SW1-SW5 indicates ON status, and 0 indicates OFF status.
• When multiple battery packs communicate, the last battery pack SW5 needs to be in the ON status, otherwise the communication may have interference.
• 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.
• 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.
• 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

Felicity cannot guarantee eStrong battery absolute safety.

5.1 Fire

In case of fires, make sure that 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 one is exposed to the leaked substance, immediately perform the actions described below:

• 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 let people access it, and contact your supplier for help.

Damaged Batteries

Damaged batteries are not fit for use and are dangerous and must be handled with the utmost care. They may leak electrolyte or produce flammable gas. If the battery pack seems to be damaged, pack it in its original container and then return it to your supplier.

5.4 Warranty

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

Limitation of Liability

Felicity does not assume any direct or indirect liability for product damage or property loss caused by the following conditions:

• Product modified, design changed, or parts replaced.
• Changed, or attempted repairs and erasing 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 scratch caused by movement inside packaging during shipping). A claim should be made directly to the shipping or insurance company.

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 charger controllers, or UPS, please implement the following recommended settings before launching them.

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