1. Introduction
This manual provides essential information for the safe and efficient use of your HumsiENK 12V 314Ah LiFePO4 Lithium Battery. This high-performance battery features a 4019Wh capacity, an impressive 15,000+ deep charge-discharge cycles, and an integrated 200A Battery Management System (BMS). Designed for reliability and longevity, it includes IP65 water resistance and advanced low-temperature protection, making it ideal for a wide range of applications including RVs, off-grid systems, marine vessels, and solar energy storage.
2. Safety Information
Your HumsiENK LiFePO4 battery is equipped with an advanced 200A Battery Management System (BMS) to ensure comprehensive protection and safe operation. Adhere to the following safety guidelines:
- Integrated BMS Protection: The BMS safeguards against overcharging, over-discharging, overcurrent, and short circuits. It also features a high-temperature cut-off that stops charging above 158°F (70°C) and a low-temperature cut-off that prevents charging below 32°F (0°C) to protect the battery cells.
- Maintenance-Free: Unlike lead-acid batteries, this LiFePO4 battery is maintenance-free, eliminating the need for water top-ups or ventilation for toxic fumes.
- Cell Quality: The battery utilizes A+ grade energy storage cells for enhanced safety and a long operational lifespan.
- Installation Environment: Ensure proper ventilation during installation and operation. Avoid installing the battery in enclosed spaces without adequate airflow.
- Connection: Always use appropriate M8 screws and ensure all connections are tight and secure to prevent arcing or overheating.
- Handling: Despite its robust design, avoid dropping or subjecting the battery to severe impacts.

Image: The advanced Battery Management System (BMS) provides all-round safety for the battery.

Image: The battery is constructed with safe A+ energy storage grade cells, ensuring reliability and a long lifespan.
3. What's in the Box
Upon unpacking your HumsiENK 12V 314Ah LiFePO4 Lithium Battery, please verify that all the following items are included:
- 1 x HumsiENK 12V 314Ah LiFePO4 Lithium Battery
- 4 x M8 Screws
- 2 x Insulated Caps (Red and Black)
- 1 x Instruction Manual

Image: Contents of the HumsiENK 12V 314Ah LiFePO4 battery package.
4. Specifications
Below are the detailed technical specifications for the HumsiENK 12V 314Ah LiFePO4 Lithium Battery:
| Feature | Specification |
|---|---|
| Model Number | HS12V314AH200MINI |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 314Ah |
| Energy | 4019Wh |
| Battery Management System (BMS) | 200A |
| Cycle Life | 15,000+ cycles (at 60% Depth of Discharge) |
| Dimensions (L x W x H) | 15.1 x 7.6 x 9.8 inches |
| Weight | 61.7 lbs |
| Maximum Continuous Output | 2500W |
| Ingress Protection (IP) Rating | IP65 |
| Low Temperature Charging Cut-off | 32°F (0°C) |
| High Temperature Charging Cut-off | 158°F (70°C) |
| Expandability | Supports 4S4P configurations (up to 51.2V 1200Ah, 64.30kWh) |
5. Setup
Proper setup is crucial for the performance and longevity of your battery. Follow these guidelines for installation:
5.1 Physical Installation
- Placement: The compact dimensions (15.1 x 7.6 x 9.8 inches) and lighter weight (61.7 lbs) allow for installation in tight spaces. Ensure the battery is placed on a stable, flat surface.
- Environment: The IP65 rating provides protection against dust and water jets, making it suitable for various indoor and outdoor environments. However, avoid prolonged submersion or direct exposure to extreme conditions beyond its operating limits.

Image: The HumsiENK 12V 314Ah LiFePO4 battery is designed to be smaller and lighter than comparable batteries.
5.2 Electrical Connections
- Terminal Connections: Use the provided M8 screws to securely connect your cables to the battery terminals. Ensure positive (+) and negative (-) terminals are correctly identified and connected.
- Cable Sizing: Use appropriately sized cables for your application to handle the current draw and prevent voltage drop.
- System Expansion: The battery supports configurations up to 4 series and 4 parallel (4S4P), allowing for a maximum system capacity of 51.2V 1200Ah (64.30kWh). When connecting multiple batteries, ensure they are of the same brand, model, and capacity for optimal performance and safety. Consult a qualified electrician for complex system designs.

Image: A single HumsiENK 12V 314Ah battery can replace multiple smaller batteries, simplifying setup.

Image: The battery supports 4S4P configurations, allowing for scalable energy storage solutions up to 64.3kWh.
6. Operating Instructions
The HumsiENK LiFePO4 battery is designed for reliable and efficient power delivery across various applications.
6.1 Charging and Discharging
- Cycle Life: Experience over 15,000 deep charge-discharge cycles, significantly outlasting traditional battery types.
- Depth of Discharge (DOD): The battery offers nearly 100% Depth of Discharge, meaning you can utilize almost its entire 4019Wh capacity without impacting its lifespan.
- Temperature Protection: The integrated BMS automatically manages charging and discharging based on temperature. Charging is cut off below 32°F (0°C) and above 158°F (70°C) to prevent damage. Discharging is permitted between -4°F (-20°C) and 158°F (70°C).
- Maximum Output: The battery provides a maximum continuous output of 2500W, suitable for powering a wide range of devices.

Image: The battery offers high energy density, stable output, and a long cycle life of over 15,000 cycles.
6.2 Applications
This versatile battery is suitable for numerous applications:
- Recreational Vehicles (RVs), Campers, Travel Trailers
- Off-Grid Solar Systems
- Marine Vessels (Boats, Houseboats, Trolling Motors)
- Home Energy Storage and UPS Backup Systems
- Golf Carts
- CCTV Security Cameras and DIY Projects

Image: The compact size of the battery allows for maximum space savings in various applications.
7. Maintenance
The HumsiENK LiFePO4 battery is designed to be largely maintenance-free, thanks to its robust construction and advanced BMS. However, observing the following points will help ensure its optimal performance and longevity:
- Regular Inspection: Periodically check battery terminals for corrosion or loose connections. Clean terminals if necessary using a wire brush and ensure they are securely tightened.
- Temperature Management: The BMS automatically protects the battery from extreme temperatures during charging and discharging. For optimal lifespan, operate the battery within its recommended temperature ranges.
- Storage: If storing the battery for an extended period, ensure it is charged to approximately 50-70% of its capacity and stored in a cool, dry place away from direct sunlight and extreme temperatures.
- Cleaning: Keep the battery casing clean and free from dust and debris. Use a dry cloth for cleaning; avoid harsh chemicals or abrasive materials.

Image: Intelligent low-temperature protection ensures battery reliability even in cold conditions.
8. Troubleshooting
If you encounter issues with your HumsiENK LiFePO4 battery, consider the following common troubleshooting steps:
- Battery Not Charging:
- Verify all charging cable connections are secure and correctly polarized.
- Ensure your charger is compatible with LiFePO4 batteries and is functioning correctly.
- Check the battery's temperature. The BMS will prevent charging if the temperature is below 32°F (0°C) or above 158°F (70°C).
- Battery Not Discharging/No Power Output:
- Check all load connections for security and correct polarity.
- Confirm the load is within the battery's maximum continuous output (2500W). Overloading will trigger BMS protection.
- Check the battery's state of charge. If deeply discharged, the BMS may enter a protective mode.
- Verify the battery's temperature. The BMS may cut off discharge if temperatures are outside the -4°F (-20°C) to 158°F (70°C) range.
- Reduced Performance:
- Ensure the battery capacity is sufficient for your application's power demands.
- If using multiple batteries in series or parallel, ensure they are balanced. Imbalances can lead to reduced overall system performance.
If these steps do not resolve the issue, please refer to the warranty and support section for further assistance.
9. Warranty & Support
HumsiENK stands behind the quality and performance of its products.
9.1 Warranty Information
This HumsiENK 12V 314Ah LiFePO4 Lithium Battery comes with a 5-year protection warranty. This warranty covers defects in materials and workmanship under normal use and service conditions. Please retain your proof of purchase for warranty claims.

Image: The battery is backed by a 5-year protection warranty.
9.2 Customer Support
For technical assistance, warranty claims, or any questions regarding your HumsiENK battery, please refer to the contact information provided in your product packaging or visit the official HumsiENK website. Our support team is available to assist you.