User Manual for EG4 14.3kWh WallMount All Weather Battery

Quick guide from the manual

The EG4 14.3kWh WallMount All Weather Battery is a 48V lithium iron phosphate (LiFePO4) energy storage system designed for residential outdoor use. This manual provides essential instructions for safe installation, wiring, communication setup, and maintenance. Always ensure the battery is in the off position before making any connections and use a voltmeter to verify no voltage is present.

Safety Warnings

• Hazardous Voltage: Do not disassemble the battery. Incorrect servicing can result in electric shock or fire.
• Short Circuit: Never short-circuit DC inputs.
• Handling: The battery is heavy (308.6 lbs / 140 kg). Use a team lift technique or appropriate lifting equipment.
• Environment: Mount in an upright position on a non-combustible surface. Ensure proper drainage if installed on the ground.
• Temperature: The battery stops charging below 32°F (0°C). Disconnect immediately if charging current is observed below this temperature.

Installation

The battery can be installed with or without a conduit box and can be integrated with the EG4 18kPV inverter.

• Clearance: Maintain at least 6 inches (152.4 mm) of clearance on each side of the battery for airflow and access.
• Mounting: Secure the mounting bracket to the wall at a height of at least 28.0625 inches from the ground. Use the included expansion bolts for concrete/brick or appropriate hardware for other surfaces.
• Conduit Box: Highly recommended for cable protection. Attach to the top of the battery using the provided thumb screws.
• Grounding: Always attach a grounding conductor to the M6 grounding screw on top of the battery.

Battery Paralleling and Wiring

• Series Connection: Do not connect these batteries in series.
• Paralleling: Ensure all batteries are charged to 100% before paralleling. Use the paralleling kit (sold separately) for communication cables and power cables.
• Communication: Daisy-chain the "Battery-Comm" ports using the communication cable. The battery with DIP Switch ID 1 acts as the master and connects to the inverter.

Communication and Settings

• DIP Switches: Each battery in a parallel bank must have a unique ID (1-64). Set the master battery to ID 1.
• Protocol Selection: To change the inverter protocol, set the master battery to address 64, restart, and use the "Return" key for 5 seconds to enter the "Protocol Setting" menu.
• BMS Tools: PC software is available for real-time diagnostics. Connect via an RS-485 to USB-A cable. Set the battery to ID 64 to communicate with the software.

Operation and LCD

The LCD screen displays voltage, current, temperature, and state of charge (SOC). Use the four buttons below the screen (Up, Down, Return, Enter) to navigate menus and view cell-level data.

Troubleshooting

If the ALM light is on, check the cause via the app or BMS Tools. Common issues include:

• Inverter communication failure: Check communication port connection and battery ID setting.
• No DC output: Check battery breaker or charge the battery.
• ALM LED always on: Indicates a short circuit; disconnect power cables and inspect.
• Unbalanced voltage/temperature: Deep discharge the battery bank (<20% SOC) and then charge fully.

Technical Specifications

• Energy Capacity: 14.3kWh @ 25°C, 100% SOC.
• Voltage: 51.2V nominal.
• Max Continuous Charge/Discharge: 200A.
• Ingress Protection: IP65.
• Cycle Life: >8000 cycles @ 0.5C, 80% DOD.

Storage and Disposal

Store the battery at 50% SOC in a location between 33°F and 90°F (0.6°C - 32°C). Recharge every 8-9 months during prolonged storage. Do not dispose of in trash; contact local recycling organizations for lithium battery disposal.