1. Introduction
The Humsienk 12V 50Ah LiFePO4 Battery Pack is designed for reliable and long-lasting power solutions, featuring EV A+ grade cells for superior energy density and exceptional performance. This manual provides essential information for the safe installation, operation, and maintenance of your battery, ensuring optimal performance and longevity.
The battery is equipped with advanced features including a built-in Battery Management System (BMS) and low-temperature protection, making it suitable for various applications such as home energy storage and portable power systems.
2. Important Safety Warnings
- ⚠️ KEEP OUT OF REACH OF CHILDREN. In case of ingestion, seek medical attention immediately.
- Do not short-circuit the battery terminals.
- Do not puncture, drop, crush, or disassemble the battery.
- Avoid exposing the battery to extreme heat, fire, or direct sunlight for prolonged periods.
- Use only compatible chargers designed for LiFePO4 batteries.
- Ensure proper ventilation when charging or discharging the battery.
- Always wear appropriate personal protective equipment (PPE) such as gloves and eye protection when handling batteries.
- Do not connect batteries with different capacities or types in series or parallel.
3. Product Features
- Extended Service Life: Utilizes EV A+ grade cells, providing a 10-year service life and over 8000 cycles at 100% Depth of Discharge (DOD). Achieves 15000+ cycles at 60% DOD and 6000+ cycles at 80% DOD.
- Integrated 50A BMS: Equipped with a sophisticated 50A Battery Management System that intelligently balances cells and offers comprehensive protection against overcharge, over-discharge, overcurrent, short circuit, overtemperature, and overload.
- Low Temperature Protection: Features intelligent safeguards to prevent charging below 0℃ (32℉) and operation below -20℃ (-4℉), preserving battery cell integrity and extending lifespan in cold environments.
- Scalable Energy Solution: Designed for flexibility, allowing connection in series (up to 48V) and parallel (up to 200Ah capacity) to customize your energy storage needs. Supports a maximum output power of 10.24kW.
- Lightweight and Portable: Compact dimensions of 7.7 x 5.1 x 6.7 inches and a weight of just 11.4 lbs (5.2 kg) make it easy to handle and transport.
- Certifications: Certified with CE, FCC, RoHS, and UL standards, ensuring product quality and safety.
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | Humsienk |
| Model Number | 12V50Ah |
| Type | LiFePO4 |
| Nominal Capacity | 50Ah |
| Voltage | 12.8V |
| Rated Voltage | 12.8V (Others) |
| Weight | 11.4lbs / 5.2kg |
| Size (L x W x H) | 7.7 x 5.1 x 6.7 inches |
| Connection Type | M6 Studs (Others) |
| Application | Electric Portable Power, Home Energy Storage |
| BMS | Built-in 50A |
| Cycle Life (100% DOD) | 8000 Cycles |
| Cycle Life (60% DOD) | 15000+ Cycles |
| Cycle Life (80% DOD) | 6000+ Cycles |
| Max. Discharge Temperature | 158℉ (70℃) |
| Min. Discharge Temperature | -4℉ (-20℃) |
| Charging Temperature | Above 0℃ (32℉) |
| Max. Continuous Load Power | 10.24kW (when configured in parallel/series) |
| Max. Energy | 10.24kWh (when configured in parallel/series) |
| Origin | Mainland China |
| Certifications | CE, FCC, RoHS, UL, SDS, UN38.3 |
Certifications:
Image: Humsienk LiFePO4 Battery with SDS, UN38.3, FCC, CE, ROHS certifications.
Cycle Life Performance:
Image: Humsienk LiFePO4 Battery cycle life performance showing 15000+ cycles at 60% DOD and 6000+ cycles at 80% DOD.
5. Setup and Installation
5.1 Unpacking and Package Contents
Upon receiving your Humsienk LiFePO4 battery, carefully inspect the package for any signs of damage. The standard package includes:
- 1 x Humsienk 12V 50Ah LiFePO4 Battery
- 4 x M6 Studs (for terminal connections)
- 2 x Insulating Caps
- 1 x Instruction Manual (this document)
5.2 Terminal Connections
Use the provided M6 studs to securely connect your battery to your system. Ensure all connections are tight to prevent resistance and overheating. Use the insulating caps to cover exposed terminals after connection to prevent accidental short circuits.
5.3 Series and Parallel Connections
The Humsienk 12V 50Ah LiFePO4 batteries can be connected in series or parallel to achieve higher voltage or capacity, respectively. Always ensure all batteries are of the same type, capacity, and state of charge before connecting them.
- Parallel Connection: Connect positive terminals together and negative terminals together to increase total capacity (Ah) while maintaining 12V. Maximum recommended parallel capacity is 200Ah.
- Series Connection: Connect the positive terminal of one battery to the negative terminal of the next to increase total voltage (V). For example, two 12V batteries in series create a 24V system. Maximum recommended series voltage is 48V.
Example System Configuration:
Image: Diagram showing multiple Humsienk LiFePO4 batteries connected to an MPPT and Inverter for home energy storage, illustrating a Max. Continuous Load Power of 10.24kW and Max. Energy of 10.24kWh.
6. Operating Instructions
6.1 Charging the Battery
Always use a charger specifically designed for LiFePO4 batteries. The built-in BMS will protect against overcharge, but using an incompatible charger can damage the battery or reduce its lifespan.
- Charging Temperature: The battery must be charged in an environment where the temperature is above 0℃ (32℉). The BMS will prevent charging if the temperature is too low.
- Charging Voltage: Refer to your charger's instructions for the correct voltage settings for a 12.8V LiFePO4 battery.
6.2 Discharging the Battery
The battery is designed for efficient discharge and is protected by the BMS.
- Discharge Temperature Range: The battery can operate and discharge within a wide temperature range, from -20℃ (-4℉) to 70℃ (158℉).
- BMS Protection: The BMS will automatically cut off discharge if over-discharge, overcurrent, short circuit, or overtemperature conditions are detected.
Temperature Operating Range:
Image: Humsienk LiFePO4 Battery operating temperature range, indicating Max. Discharge Temperature of 158°F (70°C), Min. Discharge Temperature of -4°F (-20°C), and requirement to charge above 0°C.
6.3 BMS Protection Features
The built-in 50A BMS provides critical protection for the battery:
- Overcharge Protection: Prevents the battery from being charged beyond its safe voltage limit.
- Over-discharge Protection: Prevents the battery from being discharged below its safe voltage limit.
- Overcurrent Protection: Limits the current drawn from the battery to prevent damage.
- Short Circuit Protection: Automatically disconnects the battery in case of a short circuit.
- Overtemperature Protection: Monitors battery temperature and prevents operation outside safe limits.
- Cell Balancing: Ensures all cells within the battery pack are balanced for optimal performance and lifespan.
Internal BMS System:
Image: Internal view of Humsienk LiFePO4 Battery showing the 50A BMS system board and its protection features.
7. 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 securely fastened.
- Cleaning: Keep the battery casing clean and free from dust and debris. Use a dry cloth for cleaning. Do not use solvents or abrasive cleaners.
- 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, away from direct sunlight and extreme temperatures. Avoid storing below 0℃ (32℉) or above 45℃ (113℉).
- Avoid Deep Discharge: While the BMS protects against over-discharge, regularly discharging the battery to very low levels can slightly reduce its overall lifespan. Try to recharge before it reaches critically low voltage.
8. Troubleshooting
8.1 Battery Not Charging
- Check Connections: Ensure all charging cables are securely connected to both the battery and the charger.
- Charger Compatibility: Verify that you are using a LiFePO4 compatible charger.
- Temperature: Confirm the ambient temperature is above 0℃ (32℉). The BMS will prevent charging below this temperature.
- BMS Activation: If the battery was deeply discharged, the BMS might have entered a low-voltage protection mode. Some LiFePO4 chargers have a 'wake-up' function for this scenario.
8.2 Battery Not Discharging / No Power Output
- Check Connections: Ensure all load connections are secure.
- BMS Activation: The BMS may have activated due to over-discharge, overcurrent, short circuit, or overtemperature. Disconnect the load, allow the battery to rest, and check for any fault indicators on your system. Recharging the battery can often reset the BMS from an over-discharge state.
- Battery Voltage: Check the battery voltage. If it's too low, the BMS will prevent discharge.
8.3 Reduced Performance
- Age and Cycle Count: While designed for long life, all batteries degrade over time. Refer to the cycle life specifications.
- Temperature: Extreme operating temperatures (very cold or very hot) can temporarily reduce battery performance.
- Load: Ensure the load is within the battery's continuous discharge current limits.
9. User Tips
- Terminal Adapters: While the battery comes with M6 studs for connections, if you intend to use it in applications requiring standard car battery posts, you may need to acquire appropriate adapters separately.
- Initial Charge: It is good practice to fully charge your new battery before its first use to ensure optimal performance from the start.
- System Sizing: When building a larger energy system with multiple batteries, carefully calculate your power needs (voltage and capacity) to ensure you connect the batteries correctly in series or parallel.
10. Warranty and Support
Humsienk provides a 3-Year Assurance for this LiFePO4 battery. If you encounter any product-related issues or have questions, please contact Humsienk Direct Store customer support. Our team is committed to assisting you and will respond within 24 hours to help resolve your concerns.
Please retain your proof of purchase for warranty claims.
