1. Introduction
This manual provides essential information for the safe and efficient use of your EVE 628Ah MB56 LiFePO4 (Lithium Iron Phosphate) rechargeable battery. Designed for various applications including solar energy storage, recreational vehicles (RVs), and marine (boat) systems, these Grade A prismatic cells offer high capacity and a long cycle life. Please read this manual thoroughly before installation and operation to ensure optimal performance and safety.
2. Safety Information
WARNING: This product involves high voltage systems. Improper handling can lead to serious injury or death. Always exercise extreme caution and consult with a qualified professional if you are unsure about any aspect of installation or operation.
- High Voltage Systems: The battery is intended for use in systems with a voltage range of 50-1000V DC and 75-1000V AC. Always treat the battery and connected system as live and potentially dangerous.
- Personal Protective Equipment (PPE): Always wear appropriate PPE, including insulated gloves, eye protection, and non-conductive clothing, when working with batteries.
- Short Circuits: Avoid short-circuiting the battery terminals. This can cause severe damage to the battery, fire, or explosion.
- Overcharging/Over-discharging: Do not overcharge or over-discharge the battery beyond its specified voltage limits. Use a compatible Battery Management System (BMS) to protect the cells.
- Temperature: Operate and store the battery within the specified temperature ranges to prevent damage and ensure safety.
- Physical Damage: Do not puncture, drop, or subject the battery to severe impact. Damaged batteries can be hazardous.
- Ventilation: Ensure adequate ventilation when charging or discharging batteries, although LiFePO4 batteries produce minimal gas.
- Fire Safety: In case of fire, use a Class D fire extinguisher or copious amounts of water. Do not use water if other electrical components are involved.
Figure 2.1: Safety Test Results (Over-charge, Over-discharge, Short circuit, Acupuncture, Squeeze, Drop tests - all resulted in "No explosion, no fire").
3. Product Overview
The EVE 628Ah MB56 LiFePO4 battery is a high-performance prismatic cell designed for robust energy storage solutions. Each pack typically contains 4 cells, providing a total weight of approximately 48kg for the pack.
3.1 Key Components
Figure 3.1: Battery Cell Details
- Positive Electrode: Clearly marked terminal for positive connection.
- Negative Electrode: Clearly marked terminal for negative connection.
- QR Code: Unique identifier for tracking and product information.
- Explosion-Proof Valve: Safety mechanism to release internal pressure in extreme conditions.
3.2 Included Accessories
Each battery pack includes the necessary components for connection:
Figure 3.2: Battery Pack with Included M6 Studs, Busbars, and Epoxy Board
- M6 Studs: For secure terminal connections.
- Busbars: To connect multiple cells in series or parallel.
- Epoxy Board: For insulation and protection.
3.3 Bolt Comparison (New vs. Ordinary)
The new type of bolts provided with these batteries offer enhanced durability and safety compared to ordinary bolts:
Figure 3.3: Bolt Comparison
- New Type Bolt: More sturdy, maximum force exceeding 15NM, larger overcurrent capacity (increase by more than 180% compared to ordinary screw overcurrent).
- Ordinary Bolt: Maximum force exceeding 7NM, ordinary screw overcurrent increase by more than 150%.
4. Specifications
Detailed technical specifications for the EVE 628Ah MB56 LiFePO4 battery cell:
Figure 4.1: Product Parameters
| Parameter | Value |
|---|---|
| Battery Type | EVE 3.2V 628A LFP Battery MB56 |
| Nominal Voltage | 3.2V |
| Standard Capacity | 628Ah |
| Weight | 11500 g ±300 g |
| Dimensions (L*W*H) | 352.3mm * 71.7mm * 207.2mm |
| Charge Voltage | 3.65 ±0.05V |
| Cut-off Voltage | 2.0±0.05V |
| Internal Resistance | 0.10±0.05mΩ |
| Standard Charging Current | 0.5C |
| Standard Discharge Current | 0.5C |
| Max. Charge Current | 1C |
| Max. Continuous Discharge Current | 1C |
| Charging Temperature | 0°C ~ 60°C |
| Discharging Temperature | -30°C ~ 60°C |
| Cycle Life | 10000+ Times |
| Certification | CE, UL |
| Warranty | 3 years |
5. Setup and Installation
Proper installation is crucial for the safety and performance of your LiFePO4 battery system. It is highly recommended that installation be performed by a qualified technician.
5.1 Pre-Installation Checks
- Inspect each battery cell for any signs of physical damage.
- Verify the voltage of each cell using a multimeter before connecting them. A multimeter reading is shown in Figure 5.1.
- Ensure all included accessories (M6 studs, busbars, epoxy board) are present and undamaged.
Figure 5.1: Multimeter Reading on Battery Cell
5.2 Connecting Cells
- Prepare Terminals: Ensure battery terminals are clean and free of debris.
- Apply Epoxy Board: Place the provided epoxy board between cells and under busbars for insulation.
- Connect Busbars: Use the provided busbars to connect cells in series or parallel, depending on your system's voltage and capacity requirements.
- For series connection: Connect the positive terminal of one cell to the negative terminal of the next.
- For parallel connection: Connect positive terminals together and negative terminals together.
- Secure Connections: Use the M6 studs and nuts to firmly secure the busbars to the battery terminals. Tighten connections to the recommended torque (exceeding 15NM for the new type bolts) to ensure low resistance and prevent overheating. Refer to Figure 3.3 for bolt comparison.
- Install BMS: A Battery Management System (BMS) is essential for protecting LiFePO4 cells from overcharge, over-discharge, overcurrent, and extreme temperatures. Connect the BMS according to its specific instructions.
5.3 Initial Charging
After installation, perform an initial charge:
- Charge the battery pack using a compatible LiFePO4 charger.
- The standard charging current is 0.5C (e.g., for a 628Ah battery, 0.5C is 314A).
- Do not exceed the maximum charge current of 1C (628A).
- Charge until the battery reaches its full charge voltage of 3.65V per cell.
6. Operation
Once installed and initially charged, your EVE MB56 LiFePO4 battery pack is ready for operation.
6.1 General Usage
- Voltage Range: Maintain the battery voltage within the specified range (2.0V to 3.65V per cell) during discharge and charge cycles.
- Current Limits: Do not exceed the maximum continuous discharge current of 1C (628A) or the maximum charge current of 1C (628A).
- Temperature: Ensure the battery operates within the specified temperature ranges:
- Charging: 0°C ~ 60°C
- Discharging: -30°C ~ 60°C
6.2 Applications
These batteries are suitable for various high-power applications:
Figure 6.1: Typical Applications
- Solar Energy Storage Systems
- Recreational Vehicles (RVs)
- Electric Boats and Marine Applications
- Electric Buses and other heavy-duty electric vehicles
7. Maintenance
Regular maintenance helps prolong the life and ensure the reliability of your LiFePO4 battery system.
- Regular Inspection: Periodically check battery terminals for corrosion or loose connections. Clean terminals if necessary and re-tighten to specified torque.
- Voltage Monitoring: Monitor individual cell voltages and overall pack voltage regularly, especially if your BMS does not provide detailed cell-level data.
- Temperature Management: Ensure the battery environment remains within the recommended operating and storage temperatures. Avoid direct sunlight or extreme heat/cold.
- Cleaning: Keep the battery surfaces clean and dry. Use a dry cloth to wipe off any dust or dirt.
- Long-Term Storage: If storing the battery for an extended period, charge it to approximately 50-60% State of Charge (SoC) and store it in a cool, dry place within the recommended temperature range. Periodically check the voltage during storage.
8. Troubleshooting
This section addresses common issues you might encounter. For complex problems, contact technical support.
- Battery Not Charging:
- Check charger connection and power supply.
- Verify BMS status; it might have triggered a protection mode (e.g., over-discharge, over-current).
- Inspect battery terminals and busbar connections for looseness or corrosion.
- Battery Not Discharging / Low Power Output:
- Check load connections and ensure they are secure.
- Verify BMS status; it might have triggered a protection mode (e.g., over-charge, over-current, low temperature).
- Ensure the battery is adequately charged.
- Unusual Heat or Smell:
- Immediately disconnect the battery from the load and charger.
- This indicates a serious issue. Do not attempt to use the battery. Contact technical support.
- Voltage Imbalance Between Cells:
- A good BMS should balance cells. If significant imbalance occurs, consult your BMS manual or technical support.
- This can sometimes be resolved by a full charge cycle, allowing the BMS to balance.
9. User Tips
While no specific user reviews or Q&A were provided, here are some general tips for maximizing the performance and lifespan of your LiFePO4 batteries:
- Use a Quality BMS: A reliable Battery Management System is paramount for LiFePO4 batteries. It protects against common failure modes and ensures cell balancing.
- Avoid Extreme Temperatures: While LiFePO4 batteries have a wide operating range, consistently staying within the middle of the temperature spectrum (e.g., 10°C to 40°C) can extend their lifespan.
- Moderate Charge/Discharge Rates: While the batteries can handle 1C charge/discharge, using lower rates (e.g., 0.5C or less) for daily operation can contribute to a longer cycle life.
- Proper Sizing: Ensure your battery bank is appropriately sized for your application's energy demands to avoid constant deep cycling or excessive stress.
10. Warranty and Support
10.1 Warranty
The EVE 628Ah MB56 LiFePO4 battery comes with a 3-year warranty from the date of purchase, covering manufacturing defects. This warranty does not cover damage caused by improper installation, misuse, abuse, neglect, unauthorized modification, or operation outside the specified parameters.
10.2 Technical Support
For technical assistance, warranty claims, or any questions regarding your EVE LiFePO4 batteries, please contact SelianEnergy EU Store:
Figure 10.1: SelianEnergy Contact Information
- Email: blue@selianenergy.com
- Web: https://www.aliexpress.com/store/1105365729 (SelianEnergy EU Store)
- WhatsApp: +86 15770519077
When contacting support, please have your purchase details and any relevant information about your system readily available.