1. Introduction
This manual provides essential information for the safe and efficient use of your DC HOUSE 12V 50Ah LiFePO4 Battery. Please read all instructions carefully before installation and operation. Keep this manual for future reference.
2. What's in the Box
- 1 x DC HOUSE 12V 50Ah LiFePO4 Battery
- 1 x 4A Charger
Note: The battery and charger may ship in two separate packages. Please wait patiently if you receive one before the other.
3. Key Features
- High Continuous Discharge Rate: Features a 1.5C discharge rate with a maximum continuous discharge current of 75A, suitable for various loads including trolling motors up to 65lbs.
- Versatile Output Ports: Equipped with DC and USB-C interfaces for powering mobile phones, computers, drones, cameras, car refrigerators, and other DC equipment.
- Advanced Battery Management System (BMS): Built-in 75A BMS provides protection against over-charge, over-discharge, over-current, short-circuit, and high-temperature conditions.
- 0V Wake-up Charging: The included 4A charger supports a 0V wake-up feature to restore deeply discharged battery cells.
- Lightweight and Portable: Weighing only 13.2 pounds, this battery is significantly lighter than traditional lead-acid batteries, enhancing portability for outdoor use.
- Long Lifespan: Constructed with automotive Grade A cells, offering a lifespan of up to 10 years and 4000+ deep cycles.
4. Setup and Installation
Ensure all connections are secure and correct before use. Always prioritize safety during installation.
4.1 Connecting the Charger
When connecting the 4A charger, use the vertical clamping method by attaching the clamps to the battery terminals from the top and bottom direction. This ensures more stable contact and better conductivity.

4.2 Battery Terminals
The battery features standard terminals for secure connections. Ensure proper polarity when connecting to devices or other batteries.

5. Operating Instructions
5.1 Using DC and USB-C Ports
The battery is equipped with DC and USB-C output ports to power various electronic devices. Simply connect your device to the appropriate port.

5.2 Trolling Motor Compatibility
This battery is ideal for trolling motors with 30–65lbs thrust, providing up to 10 hours of runtime at low speed and reliable performance across all speeds.

6. Charging Instructions
The included 4A charger is designed for optimal charging of your LiFePO4 battery.
6.1 Charger Operation
The 4A charger utilizes Constant Current (CC) and Constant Voltage (CV) modes for efficient charging. It takes approximately 12.5 hours to fully charge the 50Ah battery from 0% to 100%.

6.2 Charger Heat Dissipation
It is normal for the 4A charger's outer casing to become warm or hot during operation due to heat dissipation. Place the charger in a well-ventilated area during use to ensure safety.
7. Safety Features (BMS)
The built-in 75A Battery Management System (BMS) provides comprehensive protection for the battery, ensuring safe and reliable operation.

7.1 Low Temperature Protection
The battery is designed with low-temperature protection features. In extremely cold conditions, the BMS may prevent charging or discharging to protect the battery cells.
8. Usage Scenarios
The DC HOUSE 12V 50Ah LiFePO4 Battery is designed for a wide range of outdoor and off-grid applications.
8.1 Outdoor and Camping
Its lightweight design and versatile ports make it perfect for outdoor camping, RVs, and golf carts, providing power for various devices.

8.2 Indoor and Home Backup
The battery can also serve as a reliable power source for indoor devices or as a backup during power outages.

9. Specifications
| Feature | Value |
|---|---|
| Model Number | ECO-LFP125002 |
| Product Dimensions | 9.4 x 6 x 7.6 inches |
| Item Weight | 13.2 pounds |
| Output Voltage | 12 Volts (DC) |
| Rated Capacity | 50Ah |
| Max Continuous Discharge Current | 75A |
| DC Port Type | 5.5*2.1mm |
| Max Charge & Discharge Current of DC Port | 5A |
| Max Output Power of Type-C Port | 45W/50W |
| Charging Voltage | 14.4-14.6V |
| Charger Input Voltage | 90-130V AC |
| Charger Max Charging Power | 300W |
| Charger Max Charging Current | 4A |
10. Maintenance
To ensure the longevity and optimal performance of your LiFePO4 battery, follow these general maintenance guidelines:
- Store the battery in a cool, dry place when not in use.
- Avoid exposing the battery to extreme temperatures.
- Regularly check terminal connections for tightness and cleanliness.
- Do not attempt to disassemble the battery.
11. Troubleshooting
If you encounter any issues with your DC HOUSE 12V 50Ah LiFePO4 Battery, please refer to the following general advice:
- If the battery is not charging, ensure the charger is properly connected and receiving power.
- If a device is not powering on, check the battery's charge level and ensure the device is correctly connected to the appropriate port.
- If the battery stops functioning in cold temperatures, allow it to warm up to above 19.4°F (for charging) or 14°F (for discharging) for recovery.
- For persistent issues, contact DC HOUSE customer support for assistance.
12. Warranty and Support
DC HOUSE is committed to providing reliable products and thoughtful customer service. Our customer service team is available to assist with product information, installation guidance, and purchasing advice.
For any inquiries or support needs, please visit the official DC HOUSE store on Amazon or contact customer service directly. Our goal is to ensure a smooth buying experience and worry-free usage of your product.
Please refer to your purchase documentation for specific warranty terms and conditions.