OAE LP-AF51AA
OAE 51.2V 100Ah Wall Mounted LiFePO4 Battery Pack User Manual
Model: LP-AF51AA
1. Introduction
This manual provides essential instructions for the safe and efficient operation of your OAE 51.2V 100Ah Wall Mounted LiFePO4 Battery Pack (Model: LP-AF51AA). This high-performance lithium iron phosphate battery is designed for reliable and efficient energy storage in various applications, including off-grid solar systems, backup power, and grid-tied installations. It features a robust Battery Management System (BMS) for optimal performance and safety.
Please read this manual thoroughly before installation and operation to ensure proper usage and to prevent damage to the product or injury.
2. Safety Instructions
- Always wear appropriate personal protective equipment (PPE) during installation and maintenance, including safety glasses and insulated gloves.
- Ensure the battery is installed in a well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
- Do not attempt to open, disassemble, or modify the battery pack. This can lead to severe injury, fire, or explosion.
- Avoid short-circuiting the battery terminals.
- Keep the battery away from children and pets.
- In case of fire, use a Class D fire extinguisher. Water can exacerbate lithium battery fires.
- Refer to local regulations for proper disposal of LiFePO4 batteries.
3. Product Components and Features
The OAE LP-AF51AA battery pack includes the following key features:
- High-Performance 100Ah LiFePO4 Battery: Grade A lithium phosphate cells for long-lasting performance and stability.
- Advanced Battery Management System (BMS): Optimizes performance, ensures safety, and prevents overcharging, overheating, and short-circuiting. Includes RS485/CAN communication function.
- Long Battery Life: Over 6000 deep cycles with a continuous discharge current of 100A.
- Real-time Monitor: External LCD screen for monitoring battery data and operating status. External wireless module for remote data monitoring and control.
- Wall-Mounted Design: Compact and efficient for various energy storage needs.

Figure 1: OAE 51.2V 100Ah Wall Mounted LiFePO4 Battery Pack (LP-AF51AA).

Figure 2: Key features of the OAE LiFePO4 Battery, highlighting the Smart BMS, safety, 6000 cycles, and plug-and-play installation.

Figure 3: Front panel showing the LCD display, power switch, and various communication ports (RS485, RS232, CAN).
4. Setup and Installation
This section outlines the steps for installing your OAE LiFePO4 battery pack. Professional installation is recommended.
4.1 Unpacking and Inspection
- Carefully unpack the battery pack and inspect for any visible damage. Report any damage to your supplier immediately.
- Verify all components listed in the packing list are present.
4.2 Site Selection
- Install the battery in a cool, dry, and well-ventilated area.
- Avoid direct sunlight, high temperatures, and high humidity.
- Ensure the mounting surface is strong enough to support the battery's weight (130.7 pounds / 59.28 kg).
- Maintain adequate clearance around the battery for ventilation and maintenance.
4.3 Assembly and Wiring
The following video demonstrates the internal assembly and wiring process. While the product is typically pre-assembled, understanding these steps is crucial for maintenance or advanced configurations.
Video 1: Detailed assembly and wiring guide for the LiFePO4 battery pack. This video illustrates the process of installing internal components, connecting battery cells, and securing the BMS. It also shows the connection of display and power switch cables, and the tightening of terminals with a torque wrench to ensure proper electrical contact and safety. The video concludes with the initial power-up and configuration of the LCD display via a mobile application.
- Measure Cell Voltage: Before assembly, measure the voltage of each cell to ensure they are consistent.
- Install Epoxy Boards: Place the provided epoxy boards and insulating cotton within the battery enclosure to ensure proper insulation and cell separation.
- Position Battery Cells: Carefully place the battery cells into the enclosure, following the positive and negative sequence as indicated. Ensure insulating cotton is placed between cell rows.
- Install BMS Board: Secure the BMS board using M6 screws, ensuring no gaps.
- Connect BMS Wires: Connect the balance wires from the battery cells to the BMS board. Ensure correct polarity and sequence (B- to B+).
- Connect Busbars: Install the busbars to connect the battery cells in series. Tighten all nuts with a torque wrench to between 6 to 8 Nm.
- Connect Display and Power Cables: Connect the display and power switch cables to the front cover.
- Install Fire Protection: Attach the fire protection component (if included in your model).
- Secure Covers: Place the epoxy cover and the main cover plate, tightening them with M4 black screws.
4.4 Initial Power-Up
- Ensure all connections are secure and correct.
- Press and hold the ON/OFF power button for three seconds. The 4.3-inch touch screen will activate.
- During the first installation, an "overcharge protection fault" prompt may appear. This can be cleared via the "JK" APP.
4.5 Mobile App Configuration
- Download and install the "Extreme Air" (JK) APP on your smartphone.
- Hold your phone close to the device and tap the APP to detect the device name.
- Connect via Bluetooth. Enter the pairing password "123456" to authorize.
- Once connected, detailed information will be displayed.
- Navigate to Settings -> "Verify PWD" and enter "123456" to authorize.
- Click "Lifepo4" to set the battery capacity (e.g., 100Ah).
- In "Details Settings," set "Continued Charge Current (A)" to 150A. This will eliminate the overcharge fault.
5. Operating Instructions
5.1 General Operation
- Ensure the battery is properly connected to your inverter or charge controller.
- Turn on the battery using the ON/OFF switch on the front panel.
- Monitor the battery status via the integrated LCD screen or the mobile application.
5.2 Charging
- Connect a compatible LiFePO4 charger or solar charge controller to the battery.
- Ensure charging parameters (voltage, current) are within the battery's specifications (e.g., 51.2V nominal, 100A max charge current).
- The BMS will manage the charging process to prevent overcharging.
5.3 Discharging
- Connect your load (e.g., inverter, appliances) to the battery terminals.
- The battery supports a continuous discharge current of 100A. Do not exceed this limit.
- The BMS will protect against over-discharge.

Figure 4: Diagram illustrating the integration of the LiFePO4 battery into a home solar system, connecting to solar panels, an inverter, and household appliances.
6. Maintenance
- Regular Inspection: Periodically inspect the battery for any signs of damage, loose connections, or corrosion.
- Cleaning: Keep the battery clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use solvents or abrasive cleaners.
- Temperature Control: Ensure the operating environment temperature remains within the recommended range to maximize battery lifespan.
- Firmware Updates: Check the manufacturer's website or the mobile app for any available firmware updates for the BMS.
- Long-Term Storage: If storing the battery for an extended period, ensure it is charged to approximately 50% State of Charge (SOC) and stored in a cool, dry place. Recharge every 3-6 months.
7. Troubleshooting
This section provides solutions to common issues. For problems not listed here, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not turning on. | Power button not held long enough; internal connection issue. | Press and hold the ON/OFF button for 3 seconds. Check internal wiring if accessible and safe to do so. |
| "Overcharge Protection Fault" on LCD. | Initial setup requires capacity and current settings. | Connect via "JK" APP, enter password "123456", set battery capacity to 100Ah, and "Continued Charge Current (A)" to 150A. |
| Battery not charging. | Charger not connected; charger fault; BMS protection activated. | Verify charger connection and functionality. Check BMS status via LCD or APP for fault codes. |
| Battery not discharging. | Load not connected; load too high; BMS protection activated. | Verify load connection. Reduce load if exceeding 100A continuous discharge. Check BMS status for fault codes. |
| Bluetooth connection issues. | Phone too far; incorrect password; APP issue. | Ensure phone is close to the battery. Re-enter password "123456". Restart APP or phone. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | OAE |
| Model Number | LP-AF51AA |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Nominal Voltage | 51.2V |
| Battery Capacity | 100Ah |
| Energy Power | 5KWH |
| Deep Cycles | >6000 cycles |
| Max Charge Current | 100A |
| Continuous Discharge Current | 100A |
| Battery Cell Composition | Lithium Metal |
| Product Dimensions | 16.8 x 7 x 23.6 inches (427 x 180 x 600 mm) |
| Item Weight | 130.7 pounds (45 kg) |
| Recommended Uses | Home / Commercial / Industrial energy storage |
| Communication | RS485/CAN, RS232 |

Figure 5: Detailed dimensions of the OAE LP-AF51AA battery pack.
9. Warranty and Support
For warranty information, please refer to the documentation provided with your purchase or contact OAE customer support directly. Extended protection plans may be available for purchase.
For technical assistance, troubleshooting, or general inquiries, please contact OAE customer support through their official channels. Refer to the product packaging or the OAE brand store on Amazon for contact details.
Manufacturer: Top one power
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