dumfume 12V 100Ah LiFePO4 Lithium Battery User Manual

Introduction

This manual provides essential information for the safe and efficient use of your dumfume 12V 100Ah LiFePO4 Lithium Battery. This 1280Wh Group 31 rechargeable lithium iron phosphate battery features a 100A BMS and is designed for applications such as RVs, solar power systems, and home energy storage. Please read these instructions carefully before installation and operation.

Safety Information

WARNING: Failure to follow these safety instructions may result in fire, electric shock, or other injury or damage.

• The battery is equipped with a 100A Battery Management System (BMS) for protection against overcharge (14.6V), over-discharge (9.2V), short circuit, and overheating.
• Ensure battery performance temperatures are 5°C (41°F) or higher during charging. Charging below this temperature may cause damage and is not covered by warranty.
• Do not use this battery as a starting battery for vehicles, golf cart batteries, or jacks. It is not designed for high-current starting applications.
• Always use appropriate personal protective equipment (PPE) when handling batteries.
• Avoid short-circuiting the battery terminals.
• Do not disassemble, puncture, or modify the battery.
• Keep the battery away from heat sources, open flames, and flammable materials.
• Ensure proper ventilation during charging and discharging.

Product Features

• Advanced BMS: Integrated 100A Battery Management System protects against overcharge, over-discharge, short circuit, and overheating.
• Long Cycle Life: Achieves 4000+ cycles at 100% Depth of Discharge (DoD) and 6000+ cycles at 80% DoD, ensuring extended reliability.
• Low Self-Discharge: Less than 3% monthly self-discharge rate, ideal for long-term energy storage.
• Compact and Lightweight: Measures 12.8 × 6.5 × 8.46 inches and weighs 22.05 pounds, offering 40% higher energy density compared to lead-acid batteries.
• Expandable System: Supports up to 4S4P configuration, allowing for building 51.2V 400Ah systems.
• Durable Construction: Utilizes Grade A LiFePO4 cells and a flame-retardant ABS casing for enhanced safety and longevity.

Setup

Initial Charge

Your dumfume LiFePO4 battery is shipped with approximately 40% charge. It is recommended to fully charge the battery before its first use to ensure optimal performance and calibration of the BMS.

Connection for Expandable Systems (4S4P)

The battery supports up to a 4S4P (4 series, 4 parallel) configuration for building systems up to 51.2V 400Ah. When connecting multiple batteries:

• Always ensure that the voltage difference between each battery is controlled within 0.1V before making connections.
• Use appropriate cables and connectors rated for the expected current.
• Connect batteries in series first to achieve the desired voltage, then connect strings in parallel for increased capacity.
• Refer to the wiring diagram for proper series and parallel connections.

Operating Instructions

Charging

• Recommended charging current: 20-50A.
• Continuous maximum charging current: 100A.
• Charging limit voltage: 14.6V.
• Optimal charging temperature: 0°C to 65°C (32°F to 149°F). Charging performance requires temperatures of 5°C (41°F) or higher. The BMS will cut off charging below 0°C (32°F).

Discharging

• Recommended discharging current: 0-60A.
• Continuous maximum discharging current: 100A.
• Discharging temperature range: -20°C to 70°C (-4°F to 158°F). The BMS will stop discharging below -20°C (-4°F).

Controller/Inverter Settings (Single Battery)

For optimal performance and protection, configure your solar charge controller and inverter with the following parameters. If using multiple batteries in series, multiply the voltage settings accordingly.

Maintenance

• When the battery is not in use for extended periods, charge and discharge it every six months to prevent damage and maintain cell health.
• Keep the battery terminals clean and free from corrosion.
• Store the battery in a cool, dry place within the recommended storage temperature range (-10°C to 45°C).
• Regularly inspect the battery casing for any signs of damage or swelling.

Troubleshooting

Common Issues and Solutions

• Battery not charging: Check charging temperature (must be above 0°C/32°F, optimal above 5°C/41°F). Verify charger output voltage and current match battery specifications. Ensure all connections are secure.
• Battery not discharging: Check discharge temperature (must be above -20°C/-4°F). Ensure the load is within the continuous discharge current limit (100A). The BMS may have activated protection due to low voltage or over-current.
• Voltage/Current Readings Deviation: Note that voltage and current readings may exhibit a deviation of 1% to 5% depending on the measurement method and instrumentation used. This is normal.
• Overheating Terminals: If terminals show signs of overheating (e.g., melted plastic covers), immediately disconnect the battery. This can indicate loose connections, undersized cabling, or excessive current draw. Ensure proper torque on terminal connections and use appropriately sized cables for your application. Contact support if the issue persists after verifying connections and load.

For persistent issues or complex problems, please contact dumfume customer support.

Specifications

Warranty

For information regarding the product warranty, please refer to the documentation included with your purchase or contact dumfume customer support directly. Warranty terms typically cover manufacturing defects and performance under normal operating conditions.

Support

If you have any questions, require technical assistance, or encounter issues not covered in this manual, please contact the dumfume Support Team. They are available 24/7 to assist you.

Contact Information:

• Website: www.dumfume.com
• Email: contact@dumfume.com
• For Amazon purchases, you can also reach out through your Amazon order history for seller support.