1. Introduction
Thank you for choosing the Humsienk 12V 100Ah LiFePO4 Battery. This manual provides essential information for the safe and efficient operation, installation, and maintenance of your battery. Please read it thoroughly before use and retain it for future reference.
2. Important Safety Warnings
⚠️ Please mind potential fire risk and strictly follow this instruction manual for charging and storage. For disposal, please check your local authority's website for more information and dispose of the lithium-ion battery safely in accordance with the applicable legal requirements.
- Do not short-circuit the battery terminals.
- Do not expose the battery to extreme temperatures outside its operating range.
- Do not disassemble, crush, or puncture the battery.
- Use only compatible chargers designed for LiFePO4 batteries.
- Keep the battery away from water unless specifically rated for submersion.
3. Package Contents
Upon unpacking, please ensure all items are present and in good condition:
- 1 x Humsienk 12V 100Ah LiFePO4 Battery
- 1 x User Manual (this document)
- Terminal bolts and nuts (with red and black caps)
4. Specifications
| Feature | Specification |
|---|---|
| Nominal Voltage | 12.8V |
| Nominal Capacity | 100Ah |
| Energy | 1280Wh |
| Cycle Life | Up to 20,000 cycles |
| Self Discharge Rate | <3%/Month |
| Charge Voltage | 14.6±0.2V |
| Standard/Maximum Charge Current | 20A/100A |
| Over-current Protection | 300A±50A |
| Cell Type | Grade A+ LiFePO4 Cells |
| BMS | Built-in 100A Smart BMS |
| Operating Temperature Range | -4°F (-20°C) to 158°F (70°C) |
| Charging High Temperature Protection | 140~158°F (60~70°C) |
| Discharge High Temperature Protection | 149~167°F (65~75°C) |
| Low Temperature Protection | Automatic shutdown below -4°F (-20°C) |
| Certifications | CE, FCC, RoHS, UL, IEC62133, UN38.3, Class9 |
| Water & Dust Resistance | IP67 |
| Case Material | ABS |
| Dimensions (L/W/H) | 10.24 x 6.61 x 8.23 inches / 260 x 168 x 209 mm |
| Weight | 23.26 lbs / 10.55 kg |
| Terminal Type | M8 |
| Max. Expansion (Parallel & Series) | 4 Parallel (Max) & 4 Series (Max) |
5. Setup and Installation
5.1 Initial Inspection
Before installation, visually inspect the battery for any signs of damage. Ensure the terminals are clean and free from debris.
5.2 Connecting the Battery
The Humsienk 12V 100Ah LiFePO4 battery is designed for versatility and can be used in various configurations:
- Single Battery Use: Connect your load directly to the battery terminals (positive to positive, negative to negative).
- Series Connection: Up to 4 batteries can be connected in series to achieve higher voltage (e.g., 48V). Ensure all batteries are of the same capacity and voltage.
- Parallel Connection: Up to 4 batteries can be connected in parallel to increase total capacity (up to 20.48kWh). Ensure all batteries are of the same capacity and voltage.
- Combined Series-Parallel: A flexible combination of series and parallel connections is supported to meet specific power requirements.
Always ensure proper polarity when connecting batteries and loads. Use appropriate gauge cables and secure all connections tightly to prevent arcing and overheating.
5.3 Mounting and Placement
The battery is compact and lightweight (23.26 lbs / 10.55 kg), making it suitable for various installations. It meets BCI Group 24-31 standards. The battery is not restricted in its direction of use, offering flexibility in mounting. Ensure the battery is placed in a well-ventilated area, away from direct sunlight or heat sources, and secured to prevent movement.
6. Charging Instructions
The Humsienk LiFePO4 battery supports fast charging and can be fully charged in as little as 2 hours, depending on the charger. It supports three primary charging methods:
- Solar Panel + MPPT Charger: Recommended ≥ 400W for a full charge in approximately 5 hours.
- Specialized Lithium Iron Phosphate Charger: A Humsienk 14.6V/20A charger is recommended for a full charge in approximately 5 hours.
- Engine Running Charger (DC-DC): Can achieve a full charge in about 5 hours.
Always use a charger specifically designed for LiFePO4 batteries with the correct voltage and current specifications (14.6±0.2V charge voltage, 20A standard charge current, 100A maximum charge current).
7. Operating the Battery
7.1 Battery Management System (BMS)
Your Humsienk LiFePO4 battery features a built-in intelligent 100A BMS protection board. This system provides multi-protection functions to ensure optimal safety and prolong battery life. The BMS protects against:
- Over Charge
- Over Discharge
- Over Load
- Over Current (disconnects if discharge current exceeds 300±50A)
- Low Temperature (automatic shutdown below -4°F / -20°C, with low-temp charging cut-off)
- Equalization
- Short Circuit
- High Temperature (charging protection at 140~158°F / 60~70°C, discharge protection at 149~167°F / 65~75°C)
7.2 Temperature Considerations
The battery is designed to operate smoothly in a wide temperature range from -4°F (-20°C) to 158°F (70°C). For safety, the BMS will automatically shut down the battery if the temperature drops below -4°F (-20°C) or exceeds high temperature thresholds during charging or discharging. This prevents damage and ensures longevity.
7.3 Applications
This battery is suitable for a wide range of applications, including:
- Home Energy Storage
- Outdoor Power Supply
- Recreational Vehicles (RVs)
- Marine applications (fish finders, yachts, trolling motors)
- Off-Grid Power Systems
- Electric Kayaks
- Garden equipment (lawn mowers, trimmers)
- Portable electronics (children's scooters, LED lights, phones, fans, alarm systems, security cameras, outdoor camping, laptops)
The integrated nylon handle enhances portability, making it convenient for mobile and outdoor use.
8. Maintenance
- Regular Inspection: Periodically check the battery terminals for corrosion or loose connections. Clean terminals with a wire brush if necessary and ensure they are tightened securely.
- Storage: If storing the battery for an extended period, ensure it is charged to approximately 50-70% of its capacity. Store in a cool, dry place within the recommended temperature range. Avoid storing in direct sunlight or extreme heat/cold.
- Cleaning: Keep the battery case clean and free of dust and debris. Use a dry cloth for cleaning. Do not use solvents or abrasive cleaners.
- Avoid Deep Discharge: While the BMS protects against over-discharge, it is best practice to avoid consistently running the battery to its absolute minimum charge level to maximize lifespan.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Loose connections, incompatible charger, extreme temperature, BMS protection activated | Check all connections, ensure charger is LiFePO4 compatible (14.6V±0.2V), move battery to suitable temperature, allow BMS to reset if tripped. |
| Battery not discharging/no power output | Loose connections, load too high, extreme temperature, BMS protection activated (over-discharge, over-current, high/low temp) | Check all connections, reduce load, move battery to suitable temperature, allow BMS to reset. |
| Battery shuts down in cold weather | Low temperature protection activated | The BMS automatically shuts down below -4°F (-20°C). Move the battery to a warmer environment and allow it to warm up before attempting to use or charge. |
| Battery shuts down during heavy load | Over-current protection activated | The BMS disconnects if discharge current exceeds 300±50A. Reduce the load connected to the battery and allow the BMS to reset. |
| Battery feels hot | High temperature protection activated, excessive load, poor ventilation | The BMS will cut off if internal temperature is too high. Reduce load, ensure adequate ventilation around the battery, and allow it to cool down. |
10. User Tips
- Cold Weather Operation: The Humsienk LiFePO4 battery includes low temperature charging protection, which is a critical feature for safe and effective operation in colder climates. This prevents damage that can occur when charging lithium batteries below freezing temperatures.
- Maximize Lifespan: While the battery boasts an impressive cycle life, avoiding consistent deep discharges and maintaining it within optimal temperature ranges will further extend its operational life.
- System Design: When designing a system with multiple batteries, ensure all batteries are from the same batch and have similar charge levels before connecting them in series or parallel to ensure balanced performance.
11. Warranty and Support
The Humsienk 12V 100Ah LiFePO4 Battery comes with a 5-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
For technical support, warranty claims, or any questions not covered in this manual, please contact your seller or Humsienk customer service directly. Refer to the product packaging or seller's website for contact information.
