EXPERTPOWER LiFePO4 20KWH 6480W 48V Solar Power System Kit User Manual

LiFePO4 20KWH 6480W 48V Solar Power System Kit

www.ExpertPower.us
48 Volt BATTERY
Iifep04
Lithium Iron Phosphate
EP48100

Overview

The ExpertPower LiFePO4 48V 100Ah rechargeable battery s optimized for low current applications which require high energy density, while still being able to continuously discharge at 100A.

Features

• RS485 communication output for computer monitoring.
• Built-in BMS with automatic protection for over-charge, over-discharge, low-temprature, and over-temperature conditions, and more.
• State of charge, temperature and state of health indication.
• Built-in battery control for efficient operation.
• Internal cell balancing.
• Internal maintenance free system.

Battery Dimensions

Terminal Dimensions

Battery Specifications

NOMINAL CHARACTERISTICS

Nominal Voltage| 512V
Nominal Capacity ( 77°F, 0.2C)| 100 Ah
Normal Energy ( 77°F, 0.2C)| 5120 Wh
MECHANICAL CHARACTERISTICS|
Dimensions (L x W x H ) 19 x| 18.9x7in
Weight| 98 Ibs
Terminal| M6
ELECTRICAL CHARACTERISTICS
Max. Charge Current| 50 A
Max. Constant Discharge Current| 100 A
Charge Voltage| 56V
Cut-off Voltage| 40V
Charging Standard| CC:0.2 C to 56 V CV:56 V
Floating:| 55.2V-56V
Charging end current:| 0.01C
OPERATION CONDITIONS
Estimated Life ( 77°F)| >10 Years
Cycle Life (0.2C, 77°F)| 8000 with 50% DOD
4000 with 80% DOD
3000 with 100% DOD
Operating Temperature| Charging: 32 – 131°F
Discharging: -4 – 131°F
Storage Time / Temperature| Less than 18 months at-4 – 77 °F
Less than 12 months at 25-95 °F
Less than 3 months at 95-131F
GENERAL INFORMATION
Casing Material| Steel
Assembly| 16S1P – Single cell Capacity 100Ah
Recommended Charging Type| CC – CV – Float charge
BMS| Integrated with LCD display

BMS Parameters

TYPE

| | FUNCTION| SETTING VALUE| DELAY|

RECOVERY

---|---|---|---|---|---
CHARGING| Cell| Over Voltage Alarm| 3.5W| |
Protection over Voltage| 17V| 1-25| 1.Discharging Current > IA Of
2. Cell Voltage < 3.38V
3. SOC < 96%
Battery| Over Voltage Alarm| 56V| |
Over Voltage Protection| 59V| 1-2S| 1. Discharging Current > IA or
2. Battery Voltage < 54.8V
3.SOC <96%
Current| Over Current Protection| >120A| 1-2S| Auto recover after 60s
DISCHARGING| Cell| Low Voltage Alarm| 2.7V| |
Low Voltage Protection| 2.5V| 1-2S| 1.Charging Current > IA or
2. Cell Voltage > 2.9V
Battery| Low Voltage Alarm| 43.2V| |
Low Voltage Protection| 40V| 1-2S| 1 Charging Current > IA or
2.Battery Voltage < 46.4V
Current| Over Current Protection| 120A| 1S| 1.Charging Current > IA or
2.Auto recover after 605
≥150A| 0.55
CELL TEMPERATURE| charging| High 8. Low
Temperature Alarm| ≥ 131F or< 32°F|
High & Low
Temperature Protection| ≥158°F or ≤ 23°F| > 32°F and <131°F
Discharging| High & Low
Temperature Alarm| ≥ 149°F or ≤ -4°F|
Low
Temperature Protection| ≥ 149°F or ≤ -4°F| >14°F and < 40°F
BMS TEMPERATURE| High Temperature Alarm| ≥ 194°F|
High Temperature Protection| ≥ 239°F| <185°F
AMBIENT TEMPERATURE| High & & Low Temperature Alarm| ≥ 140°F or ≤ -4°F|
High & Low Temperature Protection| ≥  149°F or ≤ A3°F| >-4°F and < 4O°F
STATE OF CHARGE| Low Capacity Alarm| ≤ 5%| >5%

Battery Operation Performance

Performance may vary depending on, but not limited to, battery usage and application. If the battery is used outside its specified operation instructions and maintenance requirements, the battery is expected to deteriorate, become damaged/non-operational, or significantly reduce its operational quality. All information and specifica- tions provided here represent general operational standards across our manufactured batches. If your battery falls significantly outside of these specification ranges, please contact us for further information before use; it could indicate a defective battery or an update in batch specifications.

Components

For detailed information, reference page numbers are provided in parentheses (p.xx). A Positive Terminal
B Smart BMS Display (p.4-7)
C DC Breaker ON/OFF
D Negative Terminal
E Ground Terminal
F RS-485 Port for Inverter Communication
G RS-485 Port for PC and Battery
H Intercommunication Dry Contact
I Reset Button

Smart BMS Display
Monitor your battery health and status by using the different menus which allow you to monitor and view the status of each internal cell as well as all 14 different protections. Navigate using the MENU, ENTER, DOWN, and ESC buttons located on the right side of the display. Main Menu

Analogue Information
Battery Management System
Parameter Settings
System Settings
Analog Info Menu Analogue Information
PackV: Battery Voltage
Im: Charge/ Discharge Current
Temperature: Cell by Cell Temperature
Cell Voltage: Cell by Cell Voltage
Cell Capacity: Battery’s SOC, FCC, Rm, and CC 1. Temperature
Cell by Cell Temperature Monitoring
PCB_T : Printed Circuit Board Temperature
ENV_T: Environment Temperature 2. Cell Voltage
Cell by Cell Voltage Monitoring
3. Cell Capacity
SOC : State of Charge
FCC : Full Charge Capacity
Rm : Remaining Capacity
CC : Cycle Times

BMS Status Menu

Battery Management System Statu s
Status: Battery Status
Record: Protection History
BMS Status: Short Circuit Protection (SCP) and Failure Status
Record
SCP: Short Circuit Protection History
O/UPT: Over and Under Temperature Protection History
OCP: Over Current Protection History
UVP: Under Voltage Protection History
OVP: Over Voltage Protection History BMS Status
OOT: Over Temperature
OTP: Over Temperature Protection
OV: Over Voltage
OVP: Over Voltage Protection
UV: Under Voltage
UV: Under Voltage Protection
Y: Yes
N: No
SCP: Short Circuit Protection
Failure: Failure Status
OC: Over Current
OCP: Over Current Protection

Para Setting Menu Parameter Setting
Manufacturing Use Only
Sys Setting Menu

System Setting
Current Baud Rate

Reset Button
The provided reset button allows you to place the battery’s Battery Management System (BMS) into a low-power or sleep mode. To transition in or out of low- power mode, simply press and hold the reset button for a duration of 3 to 6 seconds. This action will enable you to control the power state of the battery’s BMS effectively.
Battery Communication Pinout
The ExpertPower EP48100 battery employs the industry-standard ANSI/TIA 568B protocol for communication. It incorporates a dedicated cable for facilitating intercommunication among batteries. To ensure seamless computer-based communication and monitoring, we invite you to visit our website for detailed instructions on utilizing the PBMS Tools in conjunction with your battery and computer.
For establishing communication with your inverter, we recommend that you consult with the manufacturer of your specific inverter model. They will be able to provide you with the requisite pinout information for the inverter’s end, ensuring a compatible and efficient connection. Additionally, please ensure that the battery protocol on your inverter is set to “LiB” to facilitate proper communication.
Caution
To ensure the effectiveness and longevity of your battery configuration, adhere to these essential guidelines:

1. Battery Consistency: Utilize identical batteries for parallel connections.
2. Uniform Voltage Levels: Prior to connecting in parallel, guarantee that all batteries share the same voltage level by fully charging each individual battery. The permissible voltage difference is less than 0.2V.
3. Avoid Mixing Batteries: Do not combine old and new batteries within the same setup.
4. Parallel and Series Separation: Avoid simultaneous parallel and series connections for the batteries.
5. Circuit Limitation: Do not exceed connecting more than 10 batteries per circuit.
6. Regular Maintenance: Annually, the batteries should be individually charged after being detached from the series. Upon reassembly, the voltage difference should not exceed 0.5V.
   Compliance with these precautions ensures reliability and longevity for this LiFePO4 battery system.

Warnings

1. Do not immerse the battery in water or allow it to get wet.

2. Do not use or store the battery near sources of heat such as a fire or heater.

3. Do not reverse the positive (+) and negative (-) terminals.

4. Do not connect the battery directly to wall outlets or car cigarette-lighter sockets without proper charging equipment. Do not allow exposed ends of cables connected to opposite terminals to touch.

5. Do not put the battery into a fire or apply direct heat.

6. Do not use the battery if the battery casing has been pierced, broken, cracked, or otherwise visibly damaged.
   Do not forcibly open the battery casing for any reason.

7. Avoid severe physical shock. Do not throw the battery or heavily strike the battery in any way. Do not put excessive pressure or step on the battery.

8. Never solder anything directly to the battery terminals.

9. Do not attempt to disassemble or modify the battery in any way.

10. Do not place the battery in a microwave oven or pressurized container.

Series & Parallel Configuration

Our system supports expansion with up to 10 batteries connected in parallel, achieving a robust 48V 1000Ah setup.
EP48100 batteries cannot be used in series.
Wiring Considerations
During the wiring of sequenced batteries, it is imperative to adhere to the following guidelines to ensure optimal safety and performance:

• Avoid Connecting to a Single Battery: Do not connect both negative and positive wires from your electrical system to a single battery. Also, avoid connecting them to batteries located in the middle of the sequence.
• Wiring Multiple Batteries in Parallel: When connecting several batteries in parallel, it is important to ensure that the negative and positive wires from your electrical system are attached to the battery bank correctly.
• The first battery in the sequence should have its negative terminal connected to the negative wire of your system, and the last battery in the sequence should have its positive terminal connected to the positive wire of your system. Please note that these batteries cannot be connected in series.

Battery Charging

Efficiently charging LiFePO4 Batteries involves a precise 2-stage algorithm known as “Constant Current/Constant Voltage” (CC/CV). Following the standard LiFePO4 profile, the process entails a 0.2C Constant Current (CC) charge up to 56.8V, followed by Constant Voltage (CV) at 57.6V charge until the current reduces to < 0.05C.
For optimal results with a 100Ah LiFePO4 battery, we recommend adhering to these specifications:

• Recommended Max Charging Current: Ideally, the charging current should not exceed 50A (0.5C). However, when circumstances demand, a faster charge of 100A (1C) can be employed. Nonetheless, consistent usage of the 1C charge method may lead to reduced battery lifespan and capacity due to heightened heat generation during this process.

It’s crucial to note that the utilization of chargers designed for other battery types, such as SLA and Gel chargers, is strongly discouraged. These chargers, tailored for acid-based chemistries, often come with features like desul- fation, equalization, and float charging, which are detrimental to LiFePO4 batteries. The built-in BMS may not suffice to safeguard against the potential damage incurred from using such chargers.
The improper use of SLA chargers can trigger adverse effects:

• Accelerated Aging: Maintaining a LiFePO4 battery at 100% charge using the SLA float charging feature could significantly expedite the aging and degradation process due to the constant stimulation of battery cells.
• Polarization and Electrolyte Decay: The excess power supplied by an SLA charger can lead to material buildup at the electrode-electrolyte interface, known as polarization, and result in electrolyte decay.

Additionally, using an SLA charger with an OCV (Open-Circuit Voltage) detection setting might damage the battery and fail to revive an over- discharged LiFePO4 battery. The BMS will deactivate the battery for protection, resulting in a situation where the battery is seemingly in an open-circuit state.
To prevent these issues and ensure optimal battery performance:

• Use Correct Charging Algorithm: Employ the appropriate CC/CV algorithm (57.6V) for LiFePO4 batteries. SLA smart chargers lack the capability to fully charge or properly maintain LiFePO4 batteries.

Usage and Storage

1. Before Use Inspection: Before using the battery, conduct a thorough examination to ensure its integrity, free from visible damage or structural irregularities.

2. Terminal and Other Visual Checks: Do not use the battery if terminals are bent, broken, or if the battery exhibits any of the following conditions: abnormal heat, leaks, water exposure, severe physical or water damage extending to the battery from the packaging, leaks, loose components, cracked casing, bloating, melting, heavy stress, or indentation. In such instances or if there are concerns about the battery’s integrity, promptly contact our support team for expert assistance.

3. Professional Installation: For optimal performance and prevention of damage or malfunctions, it is strongly recommended to have these battery packs installed by a professional or experienced individual. Monitor charging and discharging during initial use, and diligently observe temperature and operational performance. Any operational issues should be directed to our support team.

4. Proper Storage Conditions: Store the battery pack in a well-ventilated, cool, and dry environment. Avoid stacking it under heavy objects, exposing it to high temperatures, open flames, or corrosive substances.

5. Temperature and Humidity Considerations: Store the battery within specified temperature conditions.
   Maintain a recommended humidity of 60+15%.

6. ldeal Storage Capacity: Store the battery at a capacity between 40% and 60%. Every three months during storage, follow these steps:
   Fully charge the battery.
   Discharge the battery completely.
   Recharge the battery to a capacity between 40% and 60% to prevent over- discharge during storage.

Warranty & Disclaimer

These batteries have a four year warranty. This warranty guarantees that the batteries will be free from defects in materials and workmanship under normal use. However, it does not cover damages caused by customer abuse, improper handling, overcharging, undercharging, water damage, fire, or any other circumstances beyond our control like natural disaster. Furthermore, the warranty does not extend to normal wear and tear, capacity loss over time, or gradual decrease in battery performance.
This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone other than ExpertPower. In order to qualify for the warranty, the product must not be disassembled or modified. Repair, replacement or credit are our sole remedies, and ExpertPower shall not be liable for damages, whether direct, incidental, special, or consequential, even caused by negligence or fault.
For your safety and the optimal functioning of your electrical system, we strongly advise engaging a qualified professional for installation. Properly handling electrical connections and components demands a comprehensive grasp of electrical principles and adherence to local building codes, along with appropriate installation techniques. Employing a trained professional ensures accurate and secure installation, significantly reducing the risk of accidents and equipment damage.

Terms and Conditions

Prior to operation, carefully review all specifications, usage instructions, storage conditions, and warnings detailed in this document. Adherence to our handling and operation guidelines for this battery pack is paramount.
Misuse of batteries can lead to malfunction, capacity reduction, degradation, overheating, explosion, or fire hazard. Responsibility for appropriate usage and storage, as outlined in this document, rests solely with the customer. If the battery exhibits excessive heat, leaks, malfunctions, visible damage, or fails to operate as expected, refrain from use and promptly contact our support team for assistance.
ExpertPower is not responsible for any damages resulting from the misuse of this battery, whether intentional, accidental, or environmental such as damage due to natural disaster or improper storage or exposure to the elements.

LiFePO4 Battery
SUPPORT INFORMATION
Address……… 6437 Alondra Bivd
Paramount, CA 90723
Phone………… 562-630-3002
Fax………………..(562) 630-3006
Email …………….. [email protected]
Website…………..ExpertPower.us

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