1. Información importante de seguridad
Read all safety warnings and instructions before using the battery. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Do not short circuit, reverse connect, bump, or disassemble the battery.
- No caliente ni queme la batería.
- No sumerja la batería en ningún líquido.
- Use only a compatible lithium iron phosphate battery charger.
- Store the battery in a clean, dry, and well-ventilated place.
- Keep the battery charged between 30-50% for long-term storage. It is recommended to charge the battery at least once every 3 months.


2. Producto terminadoview
The Dumfume 12V 400Ah LiFePO4 Lithium Battery is designed for deep cycle applications, offering high capacity and a long lifespan. It features a built-in Battery Management System (BMS) for comprehensive protection.
2.1 Características principales
- Alta capacidad: 12V 400Ah (5120Wh) for extended power.
- Larga vida útil: 4000-15000+ deep cycles, significantly outperforming lead-acid batteries.
- BMS integrado: 200A BMS provides protection against overcharge, over-discharge, overcurrent, short circuits, and extreme temperatures.
- Volumen establetage: Maintains stable voltage even under heavy loads up to 4000W.
- Ampliable: Can be connected in series-parallel configurations for higher voltagey capacidad.
- Construcción duradera: Crafted with high-strength, impact-resistant ABS casing for heat and flame resistance.


3. Configuración e instalación
3.1 Desembalaje
Retire con cuidado la batería de su embalaje. Inspeccione si hay daños visibles. Si encuentra algún daño, contacte con atención al cliente inmediatamente.
3.2 Cargo inicial
Se recomienda cargar completamente la batería antes de su primer uso para garantizar un rendimiento óptimo y la calibración del BMS.
3.3 Conexión de baterías (serie/paralelo)
This battery can be connected in series or parallel to achieve higher voltage or capacity. For example, up to 4 units can be connected in a 1S4P (1 series, 4 parallel) configuration to achieve 51.2V 400Ah (20.48kWh) capacity, suitable for 48V solar inverters and whole-home backup systems.
- When connecting in series or parallel, all batteries must be identical (same brand, type, voltage, capacity, and BMS) and purchased within 1 month of each other to ensure compatibility and balanced operation.
- Always use appropriate cables and connectors rated for the expected current.
- Asegúrese de que todas las conexiones estén seguras y adecuadamente aisladas.
3.4 Dimensiones físicas y terminales
The battery dimensions are approximately L20.47 x W10.59 x H8.66 inches (L52.0 x W26.9 x H22.0 cm). It weighs approximately 68.78 lbs (31.2 kg). The battery is equipped with M8 terminals.

4. Instrucciones de funcionamiento
4.1 Uso general
The Dumfume LiFePO4 battery is suitable for a wide range of deep cycle applications, including:
- Vehículos recreativos (RV)
- sistemas de energía solar
- Home energy storage
- Off-grid applications
- Fishing and camppoder ing
- Sistemas de energía de respaldo


4.2 Consideraciones de temperatura
The built-in BMS includes advanced temperature control. It will automatically cut off charging or discharging in extreme heat or cold to protect the battery and extend its lifespan.
- Charging stops at 32°F (0°C) and below.
- Charging recovers at 41°F (5°C) and above.
- Discharging stops at -4°F (-20°C) and below.

5. Mantenimiento
Proper maintenance ensures the longevity and optimal performance of your Dumfume LiFePO4 battery.
- Carga regular: If the battery is not in regular use, charge and discharge it once every 6 months to prevent damage from disuse.
- Almacenamiento: For long-term storage, ensure the battery is charged to 30-50% of its capacity. Store in a cool, dry, and well-ventilated area, away from direct sunlight and extreme temperatures.
- Limpieza: Mantenga los terminales de la batería limpios y libres de corrosión. Use un paño seco para limpiar la batería.asing.
- Inspección: Periodically inspect the battery for any signs of physical damage or loose connections.
6. Solución de problemas
If you encounter issues with your Dumfume LiFePO4 battery, refer to the following common troubleshooting points:
- La batería no se carga/descarga: The built-in BMS may have activated a protection mode due to overcharge, over-discharge, overcurrent, short circuit, or extreme temperature. Allow the battery to return to normal operating conditions or address the fault condition.
- Volumentage/Current Deviations: Due to variations in temperature, humidity, measurement methods, and instruments, voltage and current readings may deviate by 1% to 5%. This is considered normal.
- Rendimiento reducido: Ensure the battery is adequately charged and that all connections are secure. Verify that the load is within the battery's specifications.
If problems persist or you have safety concerns, please feel free to contact Dumfume customer support for assistance.
7. Especificaciones
| Característica | Especificación |
|---|---|
| Marca | dumfume |
| Modelo | DFBattery-12V400A |
| Vol nominaltage | 12.8 V |
| Capacidad | 400 Ah |
| Energía | 5120 Wh |
| BMS incorporado | 200A |
| Ciclo de vida | 4000-15000+ ciclos |
| Dimensiones (L x An x Al) | 20.47 x 10.59 x 8.66 pulgadas (52.0 x 26.9 x 22.0 cm) |
| Peso del artículo | 68.78 libras (31.2 kg) |
| Tipo de terminal | M8 |
| Tasa de autodescarga | <3% por mes |
| Rango de temperatura de funcionamiento | BMS controlled (Charging stops <0°C, Discharging stops <-20°C) |
| Casing Material | High-strength, impact-resistant ABS |
8. Garantía y soporte
Dumfume is committed to providing reliable products and customer satisfaction.
- Garantía: Specific warranty terms and duration should be consulted from your purchase documentation or the official Dumfume websitio.
- Atención al cliente: The Dumfume Support Team is available to assist with any questions, concerns, or issues you may encounter during the use of your battery.
- Preocupaciones de seguridad: If you have any safety concerns regarding the battery, please contact support immediately.
For further assistance, please refer to the contact information provided with your product or visit the official Dumfume websitio.





