dumfume 12.8V 50Ah LiFePO4 Lithium Battery Instruction Manual

1. Introduction and Overview

This manual provides essential information for the safe and efficient use of your dumfume 12.8V 50Ah LiFePO4 Lithium Battery. Please read all instructions carefully before installation and operation.

The dumfume 12.8V 50Ah LiFePO4 battery is designed for various applications requiring reliable and long-lasting power, including RVs, camping, solar energy systems, off-grid setups, and home energy storage. It features a built-in 50A Battery Management System (BMS) for comprehensive protection and a 640Wh capacity.

2. Safety Information

Always prioritize safety when handling batteries. Failure to follow these guidelines may result in injury or damage to the battery and connected equipment.

Do not short-circuit the battery terminals.
Do not disassemble, crush, or puncture the battery.
Do not expose the battery to temperatures above 158°F (70°C) or below -4°F (20°C) for discharge, or below 32°F (0°C) for charging.
Use only recommended LiFePO4 battery chargers.
Do not mix this battery with lead-acid or GEL batteries.
Ensure proper ventilation during charging and discharging.
Wear appropriate personal protective equipment (PPE) such as gloves and eye protection when handling batteries.
Keep out of reach of children.

dumfume 12.8V 50Ah LiFePO4 battery with multiple protection icons — Figure 1: The dumfume 12.8V 50Ah LiFePO4 battery features multiple built-in protections including short-circuit, over-charge, over-voltage, over-current, over-temperature, and anti-static protection.

3. Product Features

Compact and Lightweight Design: Measures 7.72x6.57x6.69 inches and weighs only 11.5 lbs, offering portability and ease of installation for various applications.
High Energy Efficiency and Fast Charging: 640Wh capacity, comparable to a 100Ah lead-acid battery, but charges up to 5 times faster. Can be fully charged within 2 hours with recommended current.
Long Lifespan & Automotive Grade Cells: Built with A-grade LiFePO4 cells, providing 4000+ cycles at 100% Depth of Discharge (DOD), and up to 15000+ cycles at 60% DOD, ensuring a 10-year lifespan.
50A BMS with Comprehensive Protection: Integrated Battery Management System protects against overcharge, over-discharge, overcurrent, short circuits, and high temperatures. Automatically disconnects if discharge current exceeds 170±30A.
Temperature Resilience: Operates in extreme temperatures from -4°F to 158°F (20°C to 70°C). Features low-temperature cut-off protection to stop charging below 32°F (0°C) and stop discharging below -4°F (20°C).

dumfume 12.8V 50Ah LiFePO4 battery compared to lead-acid battery — Figure 2: Comparison highlighting the dumfume LiFePO4 battery's superior capacity, lighter weight, longer lifespan, and integrated BMS compared to traditional lead-acid batteries.

4. Specifications

Parameter	Value
Product Name	LiFePO4 Battery
Rated Capacity	50Ah
Rated Voltage	12.8V
Terminal Bolt Size	M8
Recommended Charging Current	0-15A
Continuous Maximum Charging/Discharging Current	50A
Charging Limit Voltage	14.6V
Dimensions (L x W x H)	7.68 x 6.5 x 6.8 inches
Weight	11.46 lbs (5.2 kg)
Charging Temperature Range	0°C to 65°C (32°F to 149°F)
Discharging Temperature Range	-20°C to 70°C (-4°F to 158°F)
Storage Temperature	-10°C to 45°C (14°F to 113°F)
Manufacturer	dumfume
Model Number	LFPAD1250

dumfume 12.8V 50Ah LiFePO4 battery dimensions — Figure 3: Detailed dimensions of the dumfume 12.8V 50Ah LiFePO4 battery, showing its compact size.

Product data sheet for dumfume 12.8V 50Ah LiFePO4 battery — Figure 4: A visual representation of the product data sheet, summarizing key specifications for the dumfume 12.8V 50Ah LiFePO4 battery.

5. Setup and Installation

Before connecting the battery, ensure all loads are disconnected and the battery is placed in a secure, well-ventilated area.

Inspect the Battery: Check for any physical damage.
Prepare Connections: Ensure all cables and connectors are appropriately sized for the intended current and are clean and free of corrosion.
Connect Cables: Connect the positive (+) terminal of the battery to the positive (+) terminal of your load/charger, and the negative (-) terminal of the battery to the negative (-) terminal of your load/charger. Ensure connections are tight using the provided M8 bolts.
Series and Parallel Connections: This battery supports up to 4S4P (4 series, 4 parallel) connections. When connecting in series or parallel, ensure the voltage difference between each battery is controlled within 0.1V before connection.
Secure the Battery: Use appropriate straps or mounts to secure the battery in its operating location to prevent movement or damage.

Diagram showing series and parallel connections for dumfume LiFePO4 batteries — Figure 5: Illustration of how to connect multiple dumfume LiFePO4 batteries in series and parallel for increased voltage or capacity, with a maximum system of 51.2V 200Ah.

Diagram of controller/inverter setting parameters for a single dumfume 12.8V 50Ah battery — Figure 6: Recommended controller and inverter settings for a single dumfume 12.8V 50Ah LiFePO4 battery, including charging voltage, float voltage, and temperature ranges.

Video 1: This video demonstrates the physical aspects of the BtrPower 12.8V 50Ah lithium battery, including its terminals and the provided bolts for connection. It shows the battery being unboxed and prepared for use.

Video 2: This video shows the unboxing and initial setup of a GOLDENMATE CRIUS Waterproof LiFePO4 Battery, demonstrating how to connect the battery terminals and prepare it for charging or use. It highlights the ease of handling and connection.

Video 3: This video provides an unboxing display of a 12V 50Ah battery, showcasing its components and how it is packaged. It offers a quick visual guide to what to expect upon receiving the product.

6. Operating Instructions

Charging: Charge the battery using a compatible LiFePO4 charger within the recommended charging temperature range of 0°C to 65°C (32°F to 149°F). The recommended charging current is 0-15A, with a charging limit voltage of 14.6V.
Discharging: The battery can be discharged within the temperature range of -20°C to 70°C (-4°F to 158°F). The continuous maximum discharge current is 50A. The BMS will automatically cut off discharge if the current exceeds 170±30A or if the voltage drops below the low voltage disconnect threshold.
Low-Temperature Protection: The battery's BMS includes low-temperature protection. Charging will stop if the battery temperature falls below 0°C (32°F). Discharging will stop if the battery temperature falls below -20°C (-4°F).
XT60 Port: The XT60 port has a current-carrying capacity of ≤30A. It can be used for connecting accessories or for charging via a cigarette lighter socket (adapter may be needed). Exceeding this limit may cause overcurrent risk.

7. Maintenance

Regular Charging: If the battery is not in use for an extended period, charge and discharge it once every 6 months to prevent damage from disuse and maintain optimal performance.
Storage: Store the battery in a cool, dry place within the storage temperature range of -10°C to 45°C (14°F to 113°F).
Terminal Inspection: Periodically check battery terminals for cleanliness and tightness. Clean any corrosion and tighten loose connections.

8. Troubleshooting

Battery Not Charging:
- Check if the charger is compatible with LiFePO4 batteries.
- Verify charging temperature is within 0°C to 65°C (32°F to 149°F).
- Ensure all connections are secure and free of corrosion.
- Check if the BMS has activated over-voltage or over-temperature protection.
Battery Not Discharging/No Power Output:
- Verify discharge temperature is within -20°C to 70°C (-4°F to 158°F).
- Check for overcurrent or short-circuit protection activation by the BMS.
- Ensure the battery is sufficiently charged.
- Inspect all connections for tightness and proper polarity.
Voltage/Current Deviation: Note that under various temperature/humidity measurement methods and instruments, voltage and current may deviate by 1%~5%. This is normal.

9. Applications

The dumfume 12.8V 50Ah LiFePO4 battery is versatile and suitable for a wide range of applications:

Recreational Vehicles (RVs) & Camping: Provides reliable power for appliances and electronics on the go.
Solar Energy Systems: Ideal for storing energy generated by solar panels for off-grid or backup power.
Off-Grid & Home Energy Storage: Supports independent power systems for remote locations or as a backup for home use.
Marine Applications: Suitable for fishing motors and other low-power marine equipment.
Portable Power Needs: Its compact and lightweight design makes it excellent for portable power solutions.

Note: Please do not use this 12.8V 50Ah battery as a starting battery, golf cart battery, or for jacks. It is not designed to start any device.

dumfume 12.8V 50Ah LiFePO4 battery powering various devices — Figure 7: The dumfume 12.8V 50Ah LiFePO4 battery providing 640Wh of power, capable of running an air conditioner, refrigerator, heater, or electric kettle for specified durations.

Various applications for dumfume 12.8V 50Ah LiFePO4 battery — Figure 8: Visual examples of the dumfume 12.8V 50Ah LiFePO4 battery's applications, including RVs, camping, solar panels, e-bikes, monitoring systems, and independent power systems.

Video 4: This video provides an overview and capacity test of the ECO-WORTHY 50Ah battery, demonstrating its performance in a real-world scenario. It shows the battery powering a portable refrigerator, highlighting its suitability for camping and off-grid use.

Video 5: This video showcases the advantages of DJLBERMPE lithium batteries, including their lightweight design and suitability for various applications like trolling motors. It demonstrates the battery's performance in a boat setting.

10. Warranty and Support

dumfume is committed to providing high-quality products and excellent customer service.

Safety: Our batteries feature built-in BMS protection against overcharge/over-discharge, short circuits, and overheating. With flame-retardant casing and stable LiFePO4 chemistry, they meet certifications.
Support: The dumfume Support Team is available 24/7 to assist with any safety concerns, compatibility verification, or other product-related inquiries.

For further assistance, please contact dumfume customer service.

	DUMFUME 12.8V 400Ah LiFePO4 Lithium Iron Phosphate Battery User Manual Comprehensive user manual for the DUMFUME 12.8V 400Ah LiFePO4 Lithium Iron Phosphate battery, covering features, specifications, safety precautions, installation, charging, applications, and warranty.
	DUMFUME 12.8V 600Ah LiFePO4 Battery User Manual Comprehensive user manual for the DUMFUME 12.8V 600Ah Lithium Iron Phosphate (LiFePO4) battery, covering key features, detailed specifications, charging methods, BMS functions, connection steps, application examples, warranty information, and FAQs.
	Dumfume LiFePO4 Battery User Manual - 12V Models Comprehensive user manual for Dumfume LiFePO4 batteries, covering specifications, features, charging, safety, and applications for models including 12V 50Ah, 100Ah, 200Ah, and 300Ah. Learn about BMS functions and optimal usage.
	DUMFUME LiFePO4 Lithium Iron Phosphate Battery User Manual (38.4V/51.2V 100Ah) Comprehensive user manual for DUMFUME LiFePO4 Lithium Iron Phosphate batteries, covering product overview, specifications, safety precautions, connection steps, charging methods, applications, warranty, and FAQs for 38.4V 100Ah and 51.2V 100Ah models. Learn about battery parameters, BMS functions, and storage guidelines.
	DUMFUME 12.8V 314Ah LiFePO4 Battery User Manual - Features, Specs & Safety Comprehensive user manual for the DUMFUME 12.8V 314Ah Lithium Iron Phosphate (LiFePO4) battery. Covers product overview, specifications, connection, BMS functions, charging, self-heating, applications, warranty, and FAQs.
	DUMFUME LiFePO4 Lithium Iron Phosphate Battery User Manual Comprehensive user manual for DUMFUME LiFePO4 batteries, covering product overview, safety precautions, technical specifications, connection guides, charging methods, applications, warranty information, and FAQs. Includes detailed information on various models like 12V 50Ah to 12V 314Ah.

dumfume 12.8V 50Ah (LFPAD1250)