Introduction
This manual provides essential information for the safe and efficient operation of your HumsiENK 12V 314Ah LiFePO4 Lithium Battery. Please read it thoroughly before installation and use to ensure optimal performance and longevity of your battery system.
Safety Information
WARNING: Failure to follow these safety instructions may result in fire, electric shock, or other injury or damage.
- Always wear appropriate personal protective equipment (PPE) when handling batteries.
- Do not short-circuit the battery terminals.
- Do not expose the battery to fire, extreme heat, or direct sunlight.
- Do not immerse the battery in water or other liquids.
- Ensure proper ventilation during charging and discharging.
- Use only compatible chargers designed for LiFePO4 batteries.
- Keep out of reach of children.
- Do not disassemble, puncture, or modify the battery.
- In case of fire, use a Class D fire extinguisher. Water can exacerbate lithium fires.
What's in the Box
- 2PCS 12V 300Ah (314Ah) LiFePO4 Lithium Battery Mini
- User manual
- Screw (M8 terminals and battery bolt caps)

Specifications
| Feature | Detail |
|---|---|
| Brand | HumsiENK |
| Model | 2PCS 12V 300Ah (314Ah) LiFePO4 Lithium Battery Mini |
| Nominal Voltage | 12V |
| Capacity | 314Ah (4.01 kWh / 4.19 kWh) |
| BMS | Built-in 100A BMS |
| Cycle Life | 15,000+ cycles at 60% DOD |
| Low-Temp Protection | Prevents charging below freezing (4°F / -20°C) |
| Bluetooth | Bluetooth 5.0 for smart monitoring via HumsiENK App |
| Dimensions (L x W x H) | 15.24 × 9.72 × 7.6 inches |
| Weight | 61.73 lbs (28 kg) |
| Expandability | Up to 4 in series & 4 in parallel (51.2V/1256Ah, 64.3kWh) |


Setup and Installation
Before installation, ensure all components are present and undamaged. Always disconnect power sources before making any connections.
Connecting Batteries
The HumsiENK 12V 314Ah LiFePO4 battery can be connected in series (up to 4 batteries for 48V systems) and in parallel (up to 4 batteries) to achieve higher voltage or capacity. Ensure all batteries are at a similar state of charge before connecting them in parallel.
Use appropriate gauge cables and M8 terminals for secure connections. Tighten all connections to prevent resistance and overheating.

Charging
Use a LiFePO4 compatible charger. The built-in BMS (Battery Management System) provides low-temperature cut-off protection, preventing charging below 4°F (-20°C) to prolong battery life.
Operating Instructions
Bluetooth Smart Monitoring
The battery features Bluetooth 5.0 for real-time monitoring via the HumsiENK App (available for iOS and Android). Scan the QR code on the battery or search for the app in your device's app store.
- Download the HumsiENK App.
- Open the app and allow Bluetooth permissions.
- Scan the QR code on the battery to connect.
- Monitor voltage, current, capacity, and temperature in real-time.

Applications
This battery is ideal for various applications including RVs, marine vessels, solar energy systems, off-grid setups, and home backup power. Its compact and lightweight design makes it suitable for tight spaces.


Maintenance
- Regularly check battery terminals for corrosion and ensure connections are tight.
- Keep the battery clean and dry.
- Store the battery in a cool, dry place when not in use, ideally at a partial state of charge (50-70%).
- Avoid prolonged storage in a fully discharged state.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger incompatibility, low temperature, BMS protection activated, loose connections. | Ensure charger is LiFePO4 compatible. Move battery to warmer environment if below 4°F (-20°C). Check app for BMS fault codes. Verify all cable connections. |
| Battery not discharging | Over-discharge protection, BMS protection activated, load too high. | Recharge the battery. Check app for BMS fault codes. Reduce load or use a higher capacity battery. |
| Bluetooth connection issues | Out of range, app glitch, battery off. | Ensure device is within 15m range. Restart app and phone's Bluetooth. Check if battery is powered on. |
Warranty and Support
HumsiENK provides a 5-year warranty for this product, ensuring a worry-free experience. For any inquiries or assistance, our customer service is available 24 hours a day.
For warranty registration, please visit: www.humsienk.com/pages/warranty-registration
You can also visit the official HumsiENK Store on Amazon for more information: HumsiENK Amazon Store










