1. Introduction
This manual provides essential information for the safe and efficient use of your AMPINVT 51.2V 100Ah 5.12Kwh Power Wall Mounted LiFePO4 Battery. Please read this manual thoroughly before installation and operation to ensure optimal performance and longevity of your battery system. This high-performance lithium iron phosphate battery is designed for reliable energy storage in various applications, including home, commercial, and industrial solar systems.

Figure 1: Front view of the AMPINVT 51.2V 100Ah Power Wall Mounted LiFePO4 Battery.
2. Safety Information
Always observe the following safety precautions to prevent injury, damage to the battery, or other property damage.
- Hazardous Materials: This item contains hazardous materials. Handle with care and dispose of according to local regulations.
- Installation: Installation should only be performed by qualified personnel. Ensure all connections are secure and correct polarity is observed.
- Ventilation: Install the battery in a well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
- Physical Damage: Do not drop, puncture, or expose the battery to severe impact. Do not open the battery casing.
- Water Exposure: Keep the battery dry and away from water or other liquids.
- Temperature: Operate the battery within its specified temperature range.
- Emergency: In case of fire, use a Class D fire extinguisher. Do not use water.
The integrated Battery Management System (BMS) provides multiple layers of protection, including temperature, overdischarge, overcharge, overcurrent, overvoltage, battery cell, short circuit, and balanced protection, enhancing overall safety and lifespan.

Figure 2: Overview of BMS protection features.
3. Product Overview

Figure 3: The AMPINVT 51.2V 100Ah Smart LiFePO4 Battery with built-in Active Balancer & BMS.
3.1 Key Features
- High-Performance LiFePO4 Battery: 51.2V 100Ah (5.12Kwh) with Grade A lithium phosphate cells for stability and long-lasting performance.
- Advanced Battery Management System (BMS): Optimizes performance, ensures safety, and prevents overcharging, overheating, and short-circuiting. Includes RS485/CAN communication for easy integration with compatible equipment.
- Long Battery Life: Over 6000 deep cycles, providing a working lifespan of 5-10 years. Continuous discharge current of 100A.
- Versatile Applications: Ideal for off-grid solar systems, backup power, and grid-tied applications in home, commercial, or industrial settings.
- Real-time Monitoring: External LCD screen displays battery data and operating status. Remote data monitoring and control are possible via an external wireless module.
- Wall-Mounted Design: Compact and efficient design suitable for home energy storage solutions.

Figure 4: Key features of the LP-Series battery, including capacity, charge, and discharge currents.

Figure 5: Benefits including Smart BMS, safety, cycle life, and ease of installation.
3.2 Application Scenarios
The AMPINVT Power Wall battery is suitable for a wide range of energy storage needs.

Figure 6: Examples of applicable scenarios for the battery system.

Figure 7: Diverse applications for the AMPINVT LiFePO4 battery.
3.3 Components and Interface
The battery unit features an intuitive interface for monitoring and connectivity.

Figure 8: Front panel LCD display and rear panel connection ports.
- LCD Display: Shows real-time battery data and operating status.
- Display Switch: Button to cycle through display information or activate the screen.
- LCD Key Indicator: Navigation buttons for the LCD menu.
- ADS Switch: Address switch for multi-battery configurations.
- Power/Alarm/Run Indicator: LEDs indicating power status, alarms, and operational status.
- Communication Ports: RS485, RS232, and CAN/RS485 ports for external communication with inverters or monitoring systems.
- Battery Terminals: Positive (+) and Negative (-) terminals for power connection.
- ON/OFF Switch: Main power switch for the battery unit.
- RUN Indicator: LED indicating the battery is operational.
- ALM Indicator: LED indicating an alarm or fault condition.
- Capacity Status: Indicators showing the current charge level.

Figure 9: Detailed diagram of the battery's external interfaces and indicators.
4. Setup and Installation
The AMPINVT Power Wall battery is designed for wall-mounted installation. Proper setup is crucial for safety and performance.
- Site Selection: Choose a cool, dry, well-ventilated indoor location. Ensure the wall can support the battery's weight (approximately 101.4 pounds). Avoid areas with direct sunlight, high humidity, or extreme temperatures.
- Mounting: Securely mount the battery to the wall using appropriate hardware (not included, consult a professional for proper mounting techniques). The design is specifically for wall mounting.
- Electrical Connections:
- Connect the battery's positive (+) and negative (-) terminals to your inverter or charge controller. Ensure correct polarity.
- Connect communication cables (RS485, RS232, CAN) to your inverter or monitoring system as required for data exchange and control.
- Ensure all connections are tight and secure to prevent arcing or power loss.
- System Integration: The battery is designed to integrate with home solar systems. Connect solar panels to an inverter, which then connects to the battery for energy storage, and finally to household appliances.
- Initial Power-Up: After all connections are verified, switch the main ON/OFF switch on the battery to the 'ON' position. The LCD display should illuminate, and the RUN indicator should activate.

Figure 10: Illustration of the wall-mounted design.

Figure 11: Example of home solar system integration.

Figure 12: Diagram illustrating the battery's role in a home backup emergency power system.
5. Operation
Once installed and powered on, the battery operates largely automatically, managed by its internal BMS. User interaction primarily involves monitoring and, if desired, remote control.
- LCD Monitoring: Use the Display Switch to activate the LCD screen and cycle through various parameters such as voltage, current, temperature, state of charge (SOC), and cycle count. The LCD Key Indicator buttons allow for menu navigation.
- Status Indicators:
- RUN LED: Indicates the battery is operating normally.
- ALM LED: Illuminates or flashes to indicate an alarm or fault condition. Refer to the troubleshooting section for details.
- Capacity Status LEDs: Provide a quick visual reference of the battery's charge level.
- Communication Functions: The RS485/CAN ports enable the battery to communicate with compatible inverters or external monitoring systems, allowing for advanced data logging and control. Consult your inverter's manual for specific communication setup.
- Remote Monitoring: An external wireless module (sold separately) can be connected to enable remote data monitoring and control via a dedicated application or platform.

Figure 13: The LCD display interface during initial power-up, showing a welcome message.
6. Maintenance
The AMPINVT LiFePO4 battery is designed for minimal maintenance, thanks to its robust construction and advanced BMS. However, periodic checks are recommended.
- Visual Inspection: Periodically inspect the battery for any signs of physical damage, loose connections, or corrosion on terminals.
- Cleaning: Keep the battery's exterior clean and free of dust. Use a dry, soft cloth. Do not use liquid cleaners.
- Ventilation: Ensure the installation area remains well-ventilated and free from obstructions that could impede airflow.
- Temperature Monitoring: While the BMS protects against overheating, ensure the ambient temperature remains within the recommended operating range to maximize lifespan.
- Firmware Updates: Check the manufacturer's website or contact support for any available firmware updates for the BMS, which may improve performance or add features.
With over 6000 deep cycles, this battery is built for a long service life, typically 5-10 years, under proper operating conditions.
7. Troubleshooting
This section provides guidance for common issues. For problems not listed here, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not powering on | Main ON/OFF switch is off; Loose power connections; Battery deeply discharged. | Ensure ON/OFF switch is 'ON'. Check all power cable connections. If deeply discharged, connect to a compatible charger. |
| ALM LED is illuminated/flashing | BMS detected a fault (e.g., overvoltage, undervoltage, overcurrent, high/low temperature). | Check the LCD display for specific error codes or messages. Disconnect loads/chargers if necessary. Allow battery to cool if overheating. If the issue persists, contact support. |
| No data on LCD display | Display switch not pressed; Display fault. | Press the Display Switch to activate the screen. If still blank, contact support. |
| Communication error with inverter | Loose communication cable; Incorrect communication settings; Incompatible inverter firmware. | Check communication cable connections. Verify communication settings on both battery and inverter. Ensure inverter firmware is compatible with the battery's BMS. |
8. Specifications
| Parameter | Value |
|---|---|
| Model Number | LP-AF51AA |
| Nominal Voltage | 51.2V |
| Nominal Capacity | 100Ah |
| Energy | 5.12Kwh |
| Battery Cell Composition | Lithium Iron Phosphate (LiFePO4) |
| Continuous Discharge Current | 100A |
| Cycle Life | >6000 cycles |
| Product Dimensions (L x W x H) | 16.8 x 7 x 23.6 inches |
| Item Weight | 101.4 pounds |
| Communication Interfaces | RS485, RS232, CAN |
| Recommended Uses | Home / Commercial / Industrial solar energy storage |
9. Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact AMPINVT customer support directly. An optional 1 Year Portable Battery Extended Protection Plan may be available for purchase to extend coverage beyond the standard manufacturer's warranty.
For technical assistance, troubleshooting, or general inquiries, please contact AMPINVT customer support. Contact details can typically be found on the manufacturer's official website or through your point of purchase.
Customer Support: Contact AMPINVT-US Seller