EPEVER LiFePO4 (LFP) Battery

Important Safety Instructions

? Thanks for selecting the EPEVER LiFePO4 battery; please read this manual carefully before using the product.

? Do not use the product in humid, salt spray, corrosion, greasy, flammable, explosive, dust accumulative, or other severe environments.

? Please reserve this manual for future review.

Work and storage precautions:

• a) Please store the battery in a cool and dry place. Keep the battery away from corrosive, explosive, and insulating gases or conductive dust, as well as away from sources of fire, heat, and high voltage. It is forbidden to immerse the battery in water and keep children out of reach of the battery. No static electricity exists (static electricity can easily damage the battery protection circuit and cause battery damage).
• b) Fix the battery securely in a reasonable environment, and connect the connector reliably to avoid arcs and sparks caused by the contact friction.
• c) Handle the battery gently to avoid vibration, collision, and pressure shock. Otherwise, it may cause battery short circuit, resulting in high temperature and fire.
• d) Do not short-circuit the battery, and do not disassemble the battery to avoid danger.
• e) Please keep the battery in a half-charge state (40%~80% SOC is preferred). Please use non-conductive materials to wrap the battery to avoid direct contact with metal, which may cause damage to the battery.
• f) Dispose of discarded batteries safely and not put them in fire or liquid.

Hazard warning:

• a) It is strictly forbidden to crush, drop, collide, puncture, burn, or other destructive acts on the battery.
• b) Do not disassemble the battery. Improper disassembly may damage the battery's protection function, causing battery deformation, heating, smoking, or burning.
• c) Do not short-circuit the battery. Connecting the battery's positive and negative poles with conductive materials, storing and transporting the battery together with conductive materials are prohibited.
• d) Do not heat or burn batteries. Otherwise, it will cause the melting of battery components, loss of safety functions, or electrolyte combustion. Overheating can deform the battery, heat, smoke, or burn.

Emergency treatments:

• a) Avoid skin and eye contact with the electrolyte when it leaks. In case of contact, immediately wash with plenty of water and seek help from a doctor. It is forbidden for any person or animal to swallow any part of the battery or the substances contained in the battery.

Appearance

The battery features a robust design with clearly marked terminals and connection points.

• 1. Battery positive terminal: The main positive connection point for the battery.
• 2. Battery negative terminal: The main negative connection point for the battery.
• 3. LCD screen: Displays battery status, voltage, current, temperature, and SOC.
• 4. RS485 communication port: An interface for connecting to external monitoring systems or computers.
• 5. Power switch indicator: An indicator light for the power status.
• 6. Pressure reducing value: A safety feature to release internal pressure.
• Handles: Integrated handles for easier carrying and installation.

LCD Panel

RS485 Interface Definition

The RS485 communication interface pin are defined as follows. The RJ45 communication interface is used to connect the upper computer of the lithium battery PC.

(RJ45 connector diagram implied)

Charging Operation

1. General Checking: Check thoroughly including all the cables for showing no damages. Make sure the mains supply complies with the specification of the charger and the battery.
2. Turn off the charger and connect it to the battery. WARNING: Check the battery polarity before connecting to the charger. It is forbidden to reverse connect the battery.
3. Connect the charger to mains supply and turn on the charger.
4. Press the LCD power button once, and the LCD shows "CHG" to start the charging process.

Standard charge:

First, charge the battery to 14.4V with a constant current of 20A (0.2C), and then charge to 5A (0.05C) with a constant voltage of 14.4V.

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

Discharging Operation

1. Before discharging, ensure the load and equipment are in the off state.
2. Connect the battery to the load and equipment correctly. WARNING: Check the battery polarity before connecting to the load and equipment. It is forbidden to reverse connect the battery.
3. Turn on the load and equipment.
4. Press the LCD power button once, and the LCD shows "DISCH" to start the discharging process.

Standard discharge:

After the battery is standard charged, discharging the battery with a constant current of 20A (0.2C) till the battery voltage drops to 10.4V.

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

Connect in series/parallel

Connect in series (at most 4 pcs)

Diagram shows four batteries connected in series, with positive terminals of one battery connected to the negative terminals of the next.

Connect in parallel (at most 4 pcs)

Diagram shows four batteries connected in parallel, with all positive terminals connected together and all negative terminals connected together.

WARNING: When the batteries are connected in series or parallel, measure the battery voltage with a multimeter. The battery voltage shall be consistent or the voltage difference is less than 0.2V (it is normal if there is a slight spark during the parallel connection). It is forbidden to connect the battery in series/parallel when the battery voltage exceeds this range.

Disclaimers

• Please use the LFP batteries under the product specification. It may cause fire or expansion if the batteries are used incorrectly.
• EPEVER will not guarantee the performance and safety unless the batteries are used under the product specification.
• Improper use or storage of batteries resulting in poor performance is not covered by the warranty.
• When the battery cycle life meets the requirements of the specification, the battery will expire prematurely.

Specifications

Note 1: When the battery is stored for more than 3 months, the storage voltage should be maintained at 26~26.8V.

Note 2: For long-term storage, charge at least once every 3 months (no less than 30 minutes@0.2C).

Any changes without prior notice! Version number: V1.0