Dumfume 12V 300Ah LiFePO4 Battery Instruction Manual

1. Introduction

This manual provides essential information for the safe and efficient use of your Dumfume 12V 300Ah Lithium Iron Phosphate (LiFePO4) Battery. Please read these instructions carefully before installation and operation to ensure optimal performance and longevity of the battery.

Image 1.1: The Dumfume 12V 300Ah LiFePO4 Battery, a compact and powerful energy storage solution.

2. Safety Information

Your Dumfume LiFePO4 battery is designed with safety in mind, featuring a built-in Battery Management System (BMS). Adhere to the following safety guidelines:

• BMS Protection: The integrated BMS provides protection against overcharge, over-discharge, overcurrent, overheating, and short circuits. It also includes high/low temperature automatic cut-off functions to ensure safe charging and discharging.
• Temperature Range: Operate the battery within specified temperature limits. The battery is designed for discharge performance even at -4°F (-20°C) to 158°F (70°C).
• Physical Integrity: The battery is housed in a high-strength, impact-resistant ABS casing, offering resistance to heat, weather, and flame. Avoid physical damage to the casing.
• Connection: When connecting batteries in parallel or series, ensure all batteries are of the same brand, type, voltage, capacity, and BMS, and were purchased within a short timeframe (e.g., 1 month) to maintain system balance and safety.
• Prohibited Uses: Do not use this battery as a starting battery for vehicles. Do not incinerate the battery or immerse it in water. Do not use it for golf carts.

Image 2.1: Visual representation of the Smart BMS Protection features, including low/high temperature, overcharge, over-discharge, overcurrent, and short circuit protection.

Image 2.2: Important warnings: Do not use as a starting battery, do not incinerate or immerse in water, do not use for golf carts. Also, ensure identical batteries for series-parallel connections.

3. Product Overview

The Dumfume 12V 300Ah LiFePO4 battery is a high-performance, rechargeable lithium iron phosphate battery designed for various applications requiring reliable and long-lasting power.

Key Features:

• Compact & Lightweight: Weighs approximately 57 lbs, significantly lighter than comparable lead-acid batteries, making it easy to carry and install.
• High Energy Density: Offers an impressive energy capacity of up to 3840Wh, nearly double that of an equivalent lead-acid battery.
• Extended Cycle Life: Boasts a lifespan of up to 10 years, supporting 4,000 cycles at 100% Depth of Discharge (DOD) and up to 15,000 cycles at 60% DOD.
• Integrated BMS: Features a robust Battery Management System for comprehensive protection and safety.
• Durable Construction: Crafted with a high-strength, impact-resistant ABS casing for enhanced durability in various environments.

Image 3.1: Comparison highlighting the advantages of the Dumfume LiFePO4 battery over traditional lead-acid batteries in terms of capacity, weight, lifespan, and life cycles.

Image 3.2: Overview of key features including lighter weight, smaller size, low temperature charging cut-off, low self-discharge, 200A BMS, and 3840Wh capacity.

4. Setup and Installation

Proper setup is crucial for the performance and safety of your battery. Follow these guidelines for installation:

• Physical Placement: The compact design allows for installation in various spaces. Refer to the dimensions below to ensure adequate clearance and ventilation.
• Terminal Connections: The battery uses M8 terminals. Ensure all connections are secure and properly torqued to prevent loose connections and potential arcing.
• Series and Parallel Connections: This 12.8V 300Ah LiFePO4 battery can be connected in parallel and series to meet diverse power needs. Always ensure that batteries connected together are identical in brand, type, voltage, capacity, and BMS, and were purchased within a short period (e.g., 1 month) to ensure compatibility and balanced operation. Consult a qualified technician if you are unsure about complex wiring configurations.
• Charging: Use a compatible LiFePO4 charger. Ensure the charger's voltage and current settings are appropriate for a 12.8V LiFePO4 battery.

Image 4.1: Detailed dimensions of the battery (L13.78"xW7.6"xH9.84" without handle, L15.16"xW7.6"xH9.84" with handle) and an illustration of the M8 terminal.

5. Operating Instructions

The Dumfume LiFePO4 battery is designed for reliable power delivery across a wide range of applications.

Typical Applications:

• RV and Camping
• Solar Energy Storage Systems
• Backup Power Solutions
• Off-Grid Systems
• Trolling Motors
• E-bikes
• Monitoring Systems
• Street Lights

Image 5.1: Illustrates various applications including RVs, camping, solar panels, trolling motors, backup power supply, and marine use.

Image 5.2: Demonstrates the battery's ability to adapt to extreme temperatures, with excellent discharge performance even at -4°F (-20°C).

6. Maintenance

To ensure the long-term performance and reliability of your Dumfume LiFePO4 battery, follow these maintenance recommendations:

• Regular Charging/Discharging: If the battery is not in regular use, charge and discharge it once every 6 months to prevent damage from disuse and maintain cell health.
• Terminal Inspection: Periodically check battery terminals for corrosion or loose connections. Clean terminals as needed and ensure connections are secure.
• Storage: Store the battery in a cool, dry place away from direct sunlight and extreme temperatures. Ensure the battery is partially charged (e.g., 50% State of Charge) before long-term storage.
• Cleaning: Keep the battery casing clean and free from dust and debris. Use a dry cloth for cleaning. Avoid using harsh chemicals or abrasive materials.

7. Troubleshooting

If you encounter issues with your Dumfume LiFePO4 battery, consider the following common troubleshooting steps:

• No Power Output: Check all connections to ensure they are secure. Verify that the battery is adequately charged. The BMS may have activated a protection mode (e.g., over-discharge, short circuit); try recharging the battery with a compatible charger to reset the BMS.
• Charging Issues: Ensure your charger is compatible with LiFePO4 batteries and is functioning correctly. Check for proper connection between the charger and the battery. If the battery is too cold or too hot, the BMS may prevent charging; allow the battery to return to an optimal temperature range.
• Reduced Performance: Over time, performance may slightly decrease. Ensure proper maintenance as described in Section 6. If connected in a series or parallel bank, ensure all batteries are balanced.
• Voltage/Current Deviations: Note that under various temperature/humidity measurement methods and instruments, voltage and current may deviate by 1%~5%. This is generally within expected operational parameters.

If problems persist after attempting these steps, please contact Dumfume customer support for assistance.

8. Specifications

9. Warranty and Support

Dumfume is committed to providing reliable products and excellent customer service.

• Product Lifespan: The Dumfume 12V 300Ah LiFePO4 battery is designed for a long lifespan of up to 10 years under proper usage and maintenance.
• Customer Support: If you encounter any problems during use or have safety concerns, the Dumfume Support Team is available to respond 24/7.
• Contact Information: Please refer to the product packaging or the official Dumfume website for the most current contact details for support.

Your satisfaction is important to us. Do not hesitate to reach out for assistance.