EPEVER LiFePO4 (LFP) Battery Product Manual

1. Important Safety Instructions

Thank you for choosing EPEVER Lithium Iron Phosphate (LFP) battery. Please read this manual carefully before using this product.

It is strictly forbidden to install this product in harsh environments such as moisture, salt spray, corrosion, greasy, flammable and explosive, or a large amount of dust accumulation.

Please keep this product manual for future reference.

Precautions for Work and Storage

• Keep the battery in a cool, dry place, free from corrosive, explosive, and insulation-damaging gases or conductive dust. Keep away from fire and heat sources and high pressure. Do not immerse the battery in water. Keep out of reach of children. Pay attention to anti-static electricity, as it can damage the battery protection circuit.
• The battery must be safely fixed in a suitable environment, and the connector must be reliably connected to avoid contact friction that could cause arcs and sparks.
• Handle the battery gently to avoid mechanical vibration, collision, and pressure shock, which could cause internal short circuits, leading to high temperature and fire.
• Do not short-circuit the positive and negative poles of the battery. Do not disassemble or assemble the battery.
• Keep the battery in a semi-charged state (40%~80% SOC is appropriate). Wrap the battery with non-conductive materials to prevent direct metal contact, which could cause damage.
• Dispose of waste batteries safely and properly; do not put them into fire or liquid.
• This battery cannot be used in series.

⚠️ Danger Warning

• It is strictly forbidden to crush, drop, collide, puncture, burn, or subject the battery to other destructive behaviors.
• It is forbidden to disassemble and assemble the battery. Improper disassembly and assembly may damage the protective function, leading to deformation, heating, smoke, or combustion.
• It is forbidden to short-circuit the battery. Do not connect the positive and negative electrodes with conductive materials. Do not store or transport the battery with conductors.
• It is forbidden to heat and incinerate batteries, as it may melt components, lose safety features, or burn electrolyte, leading to deformation, heat, smoke, or fire.

Emergency Treatment Method

• When electrolyte leaks, avoid skin and eye contact. In case of contact, wash immediately with plenty of water and seek medical help. It is forbidden for any person or animal to swallow any part of the battery or its contents.
• If the battery is seriously deformed or leaks electrolyte due to collision or extrusion, place it in an explosion-proof box or an open area, and evacuate personnel if conditions permit.
• If the battery catches fire during use or storage, use a high-pressure water cannon to extinguish the fire, ensuring personal safety.
• If the battery catches fire during charging, turn off the charger as soon as possible before extinguishing the fire.

2. General Information

2.1 Appearance

The battery has a front, side, and back view with various interfaces and indicators.

Front View:

Features an LCD color screen (A) displaying battery status, voltage, capacity, and energy.

Side View (Left/Right):

Includes:

• Metal handle (B&I)
• Negative connector (C, K)
• Positive connector (D, L)
• Inverter communication interface (E)
• Parallel communication interface (F, N)
• Weak-current switch (G)
• Wall mounting bracket (H)
• Grounding screw interface (J)
• PC upper computer communication interface (M)
• Pressure reducing valve (O)

The side view also shows connection terminals labeled BATT+, BATT-, RS485, CAN, and BMS.

Black View:

Shows the wall mounting bracket slots.

2.2 Product Size

The product dimensions are approximately:

• Width: 531 ± 3 mm
• Height: 525 ± 3 mm
• Depth: 160 ± 2 mm

The base dimensions are approximately 515.3 mm x 430 mm. Mounting holes are spaced 496 mm apart horizontally and 320 mm apart vertically.

3. Basic Information

3.1 Interface Definition

The battery utilizes several communication interfaces:

3.1.1 RS232 Communication Interface (RJ11)

Used to connect to the lithium battery PC upper computer.

[Diagram of RJ11 connector with pins 1-6]

3.1.2 CAN/RS485 Communication Interface (RJ45)

Used for communication between the lithium battery and the inverter host.

[Diagram of RJ45 connector with pins 1-8 and signal flow indication]

3.1.3 DIP Communication Interface (RJ45)

Used for parallel communication between lithium batteries.

[Diagram of RJ45 connector with pins 1-8]

3.1.4 BMS Communication Interface (RJ45)

Used for communication between the lithium battery and the lithium battery parallel machine.

[Diagram of RJ45 connector with pins 1-8]

3.2 Product Features

• Single voltage and overall voltage detection, over-voltage and under-voltage alarm and protection.
• Charge and discharge current detection, alarm, and protection.
• Cell, environment, and PCB temperature detection, with alarms and protection for high and low temperatures during charging and discharging.
• Output short circuit detection and protection.
• Battery SOC calculation and charge/discharge cycle calculation.
• Charge balancing function to reduce the charging current of high-voltage cells.
• LED indicator function for current battery SOC, fault status, operating status, etc.
• BMS manual and automatic sleep function.
• Charge current limiting function.
• History storage function (capacity not less than 500).
• RS485 communication function for real-time monitoring of BMS and battery status.
• Two-stage over-current protection for discharge with different response speeds for enhanced reliability.

3.3 LCD Color Display

The battery features an LCD color display for monitoring and control.

Interface Introduction:

Main State Page:

[Diagram showing the 'Main State' screen with 100% SOC, Voltage, Current, and status indicators like 'Idle'. It displays 'Parallel Data' button.]

This screen shows the overall battery status, including State of Charge (SOC), Voltage, Current, and operational status.

Parallel Data Page:

[Diagram showing the 'Parallel Data' screen displaying pack information, voltage, current, and status for multiple packs (e.g., Pack #01, Pack #16, 01, 02, 03).]

This screen provides detailed information when batteries are connected in parallel.

Icon Introduction:

• [Icon of a grid of squares] Main Menu Icon: Tap to enter the main menu HOME interface.
• [Icon of a battery with a lightning bolt] Main State Icon: Click to enter the Main State interface.
• [Button labeled 'Parallel Data'] Parallel Data Icon: Click to enter the Parallel Data page.

HOME Page:

[Diagram showing the 'HOME' screen with '(BMS) Smart Battery Management System' title and options like 'PACK_INFO', 'STATUS', 'PROTOCOL', 'SYSTEM'.]

This is the main navigation screen for the BMS.

Menu Structure:

The menu provides access to various settings and information:

Note: Protocol list access is via the BMS motherboard. Initial password for changing protocols is 123456.

4. Instructions

4.1 Packing List

Before unpacking, check the battery packaging for damage and verify the model. Contact the after-sales service center if any abnormalities are found. After unpacking, ensure all items are present according to the packaging information.

• X1 Lithium battery
• X1 Wall mounting bracket
• X2 Wall mounting block 1
• X2 Wall mounting block 2
• X1 Positive output power cable
• X1 Negative output power cable
• X1 Positive connector quick plug
• X1 Negative connector quick plug
• X1 Battery pack parallel communication cable
• X1 RS485 communication cable
• X1 USB-A to RS232 communication cable
• X4 M8×60 expansion bolt
• X2 M8×12 bolt group
• X17 M6×14 bolt group
• X2 RNB22-8 wiring terminal

4.2 Installation Requirements

a. Space Installation Distance

[Diagram showing a single battery unit with minimum clearance requirements: ≥500mm on sides, ≥300mm above and below.]

Ensure adequate clearance around the battery unit for ventilation and access.

[Diagram showing multiple battery units mounted on a wall with recommended spacing: ≥500mm on outer sides, 300-500mm between units, and ≥300mm below.]

The recommended left and right distance between battery packs is 300-500mm. Minimize the distance as much as possible while maintaining adequate airflow.

b. Installation Environment

• The battery operates best at 20~40°C.
• Avoid installation in environments with direct high temperature and rain.
• Avoid installation close to high temperature heat sources or low temperature cold sources.
• Avoid installation in places with drastic ambient temperature changes.
• Avoid installation in environments with strong interference.
• Avoid installation in places accessible to children.
• Avoid installation in places where water is likely to accumulate.
• It is forbidden to place flammable and explosive materials around the equipment.

c. Prepare Tools

Required tools include:

• Hammer Drill
• Rubber Hammer
• Claw Safety Hammer
• Insulated Cross Screwdriver
• Insulated Slotted Screwdriver
• Spirit Level
• Tape Ruler
• Insulation Tape
• Dustproof Cover
• Protective Glasses
• Utility Knife
• Wire Stripper
• Diagonal Pliers
• MC4 Crimper
• Multimeter
• AC/DC Clamp-On Ammeter
• Marker Pen
• Electric Screwdriver

d. Space Installation Requirements (Mounting Steps)

1. Marking: Place the mounting bracket close to the wall, ensure it is level, mark the screw holes with a marker, and then remove the bracket. [Diagram shows bracket being marked on a wall.]
2. Drilling: Use a hammer drill to drill holes in the wall (diameter: 10mm, depth: 65mm). Insert the M8 expansion screws and tighten them. [Diagram shows drilling holes and inserting screws.]
3. Mounting Battery: Lift the lithium battery vertically and align it with the mounting bracket slots. [Diagram shows battery being lifted towards the bracket.]
4. Securing Battery: Push the lithium battery horizontally into the slot of the wall mounting bracket. [Diagram shows battery sliding into the bracket.]
5. Final Check: Let go slowly and allow the lithium battery to snap securely into the wall mounting bracket. [Diagram shows battery fully mounted.]

4.3 Charging Operation

⚠️ Warning

• For operational safety and compliance, disconnect the communication and cable link with the inverter when storing the battery.
• During handling and installation, wear safety helmets, goggles, protective shoes, and other suitable safety equipment to prevent accidental injury.
• All wiring must be carried out by professionals. Correct cable connections are essential for safe and efficient system operation. Use cables provided by EPEVER or those meeting recommended specifications.

Steps:

1. Check Before Charging: Inspect the appearance of the battery, inverter, and other connected equipment. Ensure power cords and all wiring harnesses are connected. Verify that the power supply meets the battery's specification requirements.
2. Connect Terminals: Turn off the inverter or other equipment. Connect the positive and negative terminals of the battery, and connect the communication cable normally. ⚠️Warning: Before connecting the battery, ensure that the positive and negative terminals are correctly connected. Do not reverse connect.
3. Connect Charger: Connect the charger to the power supply and turn it on.
4. Start Charging: Start the battery. The POWER indicator should be on, and the SOC indicator should flash to indicate normal charging.

Standard Charging:

First, charge the battery to 57.6V with a constant current of 20A (0.2C), then charge to 5A (0.05C) with a constant voltage of 57.6V.

Note: All tests stated in this document shall be performed at 25±2℃.

4.4 Discharge Operation

Steps:

1. Check Before Discharging: Ensure the load and equipment are turned off.
2. Connect Terminals: Properly connect the positive and negative terminals of the battery to the load/inverter or other equipment. ⚠️Warning: Before connecting the load and equipment, please confirm the positive and negative wiring of the battery and prohibit reverse connection.
3. Turn on Load: Turn on the load/inverter or other device.
4. Start Discharge: Start the battery. The POWER indicator should be steady on, the RUN indicator should be on for 0.5 seconds, and discharge starts for 1.5 seconds.

Standard Discharge:

After standard charging, discharge the battery with a constant current of 20A (0.2C) till the battery voltage drops to 41.6V.

Note: All tests stated in this document shall be performed at 25±2℃.

4.5 Precautions for Charging and Discharging Operation

• When the temperature is high (≥35°C) in summer, the battery should not be charged more than 0.5C during the day. It is recommended to stand for more than 30 minutes during charge-discharge conversion to avoid frequent use in high-temperature environments, which can affect battery life.
• When the temperature is low (<0 °C) in winter, the depth of battery discharge should be kept below 70% to avoid over-discharge caused by low temperature, which can affect battery life.

⚠️Warning: This lithium battery should only be used with a manufacturer or manufacturer-matched compatible inverter or other equipment. When the lithium battery does not communicate with the inverter or other equipment, it is forbidden to use the lithium battery.

Description of Battery Parallel Capacity and Voltage

5. Protection Features

(Note: Unless otherwise specified, the above parameters are tested at 25°C ambient temperature.)

6. Specifications

① Repeat the operation method of standard charging and standard discharge 3 times, and take the third result as the initial capacity of the battery.

② When the battery is stored for more than 3 months, the storage voltage should be maintained at 52~53.6V.

③ For long-term storage, charge at least once every 3 months (no less than 30 minutes@0.2C).

7. Precautions

7.1 Maintenance Precautions

⚠️ Warning

• If you find any problems that may affect the battery or the battery and energy storage system, please contact the after-sales service department; disassembly is strictly prohibited.
• If you find that the copper wire inside the conductive wire is exposed, please strictly prohibit touching it due to the danger of high voltage. Please contact the after-sales personnel; disassembly is strictly prohibited.
• If there are other emergencies, please contact the after-sales personnel first, operate under the guidance of the after-sales personnel, or wait for the after-sales personnel to operate on site.

8. Disclaimers

The warranty does not apply to the following conditions:

• Damage caused by improper use or inappropriate environments (It is strictly forbidden to install the Energy Storage System in humid, salt spray, corrosive, greasy, flammable, explosive, dust accumulative, or other harsh environments).
• The actual current/voltage/power exceeds the limit value of the Energy Storage System.
• Damage caused by working temperature exceeding the rated temperature range.
• Electric arc, fire, explosion, and other accidents caused by failure to follow the Energy Storage System labels or manual instructions.
• Unauthorized disassembly and maintenance of the Energy Storage System.
• Damage caused by force majeure such as lightning strikes, rainstorms, mountain torrents, and utility failures.
• Damage occurred during transportation or loading/unloading the Energy Storage System.

Any changes without prior notice! Version number: V1.1

Contact Information

HUIZHOU EPEVER TECHNOLOGY CO., LTD

Beijing Service Hotline: 010-82894896/82894112

Huizhou Service Hotline: 0752-3889706

Shenzhen Service Hotline: 0755-89236770

E-mail: sales@epever.com

Website: www.epever.com.cn