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.

[Warning] 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 of 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 may damage the battery protection circuit.
• The battery should be safely fixed in a reasonable use environment, and the connector must be reliably connected to avoid contact friction causing arc and sparks.
• Handle the battery gently to avoid mechanical vibration, collision, and pressure shock, which could cause internal short circuit, high temperature, and fire.
• Do not short-circuit the positive and negative poles of the battery, and 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 avoid direct metal contact.
• 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 perform other destructive behaviors on the battery.
• It is forbidden to disassemble and assemble the battery. Improper disassembly may damage the protective function, resulting in deformation, heating, smoke, or combustion.
• It is forbidden to short-circuit the battery. Do not connect the positive and negative electrodes with conductive materials, nor 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. Overheating can deform, heat, smoke, or burn the battery.

Emergency treatment method

• When the electrolyte leaks, avoid skin and eye contact. In case of contact, wash immediately with plenty of water and seek medical help. Do not swallow any part of the battery or its substances.
• If the battery is seriously deformed or leaks electrolyte due to collision/extrusion, place it in an explosion-proof box or an open place, 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 unit has several labeled connection points and indicators:

• Side View (A): Shows a vertical unit with a handle on top and a vent. Label A points to a small circular component (Weak-current switch).
• Side View (B): Similar to the first side view. Label B points to the metal handle.
• Back View (C): Shows mounting holes and a recessed area. Label C points to the wall mounting bracket area.
• Front View (D, E, F): Displays the EPEVER logo, voltage (51.2 V), capacity (106 Ah), energy (5427 Wh), and LED indicators. Labels D, E, and F point to: D (Battery SOC indicator), E (Malfunction indicator), F (Running indicator).
• Top View: Shows various connectors and interfaces. Label G points to the Positive connector. Label H points to the Pressure reducing valve. Label I points to the Negative connector. Label J points to the PC upper computer communication interface. Label K points to the Inverter communication interface. Labels L and M point to Parallel communication interfaces. Label N points to the Grounding screw interface.

2.2 Product Size

The battery unit has the following approximate dimensions: Height: 470mm (±3mm), Width: 190mm (±2mm), Depth: 160mm (±2mm). Mounting holes are spaced 350mm apart horizontally and 450mm apart vertically.

3 Basic information

3.1 Interface definition

(1) RS232 Communication Interface (RJ11): Used to connect to the lithium battery PC upper computer.

Diagram Description: A 6-pin RJ11 connector is shown.

(2) CAN/RS485 Communication Interface (RJ45): Used for communication between the lithium battery and the inverter host.

Diagram Description: An 8-pin RJ45 connector is shown.

(3) DIP Communication Interface (RJ45): Used for communication between lithium batteries in parallel.

Diagram Description: An 8-pin RJ45 connector is shown.

(4) BMS Communication Interface (RJ45): Used for communication between lithium battery and lithium battery parallel machine.

Diagram Description: An 8-pin RJ45 connector is shown.

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 alarm and protection for high and low temperatures during charging and discharging.
• Detection and protection of output short circuit.
• Battery SOC calculation, charge and discharge cycle calculation.
• Charge balancing function to reduce the charging current of high-voltage cells.
• LED indicator function for current battery SOC, fault status, and operating status.
• BMS manual and automatic sleep function.
• Charge current limiting function.
• History storage function (capacity of at least 500 records).
• 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 LED Indicator

The battery features a series of LED indicators:

• SOC Indicators (L1-L10): Represent battery State of Charge from 0% to 100%.
• ALM (Alarm) Indicator: Indicates alarm status.
• RUN (Running) Indicator: Indicates operational status.

A total of 12 LEDs display red, yellow, blue, and green. They are categorized as:

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, confirm all items are present according to the packaging information. Contact the after-sales service center if you have questions.

• Lithium battery (x1)
• Wall mounting bracket (x1)
• RS485 communication cable (x1)
• Positive output power cable (x1)
• Negative output power cable (x1)
• Battery pack parallel communication cable (x1)
• Positive connector quick plug (x1)
• Negative connector quick plug (x1)
• USB-A to RS232 communication cable (x1)
• M8×60 expansion bolt (x4)
• M8×12 bolt group (x2)
• RNB22-8 wiring terminal (x2)

4.2 Installation requirements

a. Space Installation distance

Ensure all tools and devices are functional before use. Recommended minimum clearances:

• 500mm above and to the sides of the battery unit.
• 300mm below the battery unit.

For multiple battery packs installed side-by-side, minimize the horizontal distance while maintaining adequate ventilation. A minimum of 300mm is recommended between units, with 500mm clearance above and below.

b. Installation Environment

• The battery operates best at 20~40°C.
• Avoid installation in environments with direct high temperature and rain.
• Avoid installation near 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 areas accessible to children.
• Avoid installation in places where water is likely to accumulate.
• Do not 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

1. Place the mounting bracket against the wall, ensure it is level, mark the screw holes with a marker, and then remove the bracket.
2. Use a hammer drill to create a 10mm diameter, 65mm deep hole in the wall. Insert the M8 expansion screw and tighten it.
3. Lift the lithium battery vertically and align it with the mounting bracket slots.
4. Push the lithium battery horizontally into the slot of the wall mounting bracket.
5. Slowly release the battery to allow it to snap securely into the wall mounting bracket.

e. Wiring diagram

The wiring diagram illustrates the connection of the EPEVER battery to an inverter and potentially other batteries. It shows the use of:

• Positive output power cable (1500mm)
• Negative output power cable (1500mm)
• RS485 communication cable (1500mm)
• Lithium battery positive parallel power cable
• Lithium battery negative parallel power cable
• Lithium battery parallel communication cable (DIP-BMS) (1200mm)

[Warning] For operational safety and compliance, disconnect communication and cable links with the inverter when storing the battery. During handling and installation, wear safety helmets, goggles, and protective shoes. All wiring must be carried out by professionals. Use the specified cables for safe and efficient system operation.

4.3 Charging operation

1. Check before charging: Inspect the battery and connected equipment (inverter, etc.) for proper power cord and wiring harness connections. Ensure the power supply meets battery specifications.
2. Turn off the inverter or other equipment. Connect the positive and negative terminals of the battery, and connect the communication cable. [Warning] Ensure positive and negative terminals are correctly connected; do not reverse connect.
3. Connect the charger to the power supply and turn it on.
4. Start the battery. The POWER indicator will be on, and the SOC indicator will flash, indicating 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 in this document are performed at 25±2℃.

4.4 Discharge operation

1. Before discharging, ensure the load and equipment are turned off.
2. Properly connect the positive and negative terminals of the battery to the load/inverter or other equipment. [Warning] Confirm positive and negative wiring; prohibit reverse connection.
3. Turn on the load/inverter or other device.
4. Start the battery. The POWER indicator will be steady on, the RUN indicator will be on for 0.5 seconds, and discharge will start for 1.5 seconds.

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

Note: All tests in this document are performed at 25±2℃.

Precautions for charging and discharging operation:

• High Temperature (≥35°C): Do not charge more than 0.5C during the day. Recommended to pause for 30 minutes during charge-discharge conversion to avoid frequent use in high-temperature environments, which can affect battery life.
• Low Temperature (<0°C): Limit battery discharge depth to <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-matched compatible inverter or equipment. If the battery does not communicate with the inverter or equipment, it is forbidden to use it.

4.5 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]

1. 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.
2. 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.
3. 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

SolarV GmbH

Tel: +4961969076877

E-mail: info@solarv.de

Website: www.solarv.de