1. Introducción
The MiBOXER C4-12 is an advanced four-slot smart charger designed for a wide range of rechargeable batteries. It features independent charging channels, automatic battery type detection, and multiple safety protections. This manual provides essential information for the safe and efficient operation of your C4-12 charger.
2. Instrucciones de seguridad
- Lea este manual atentamente antes del primer uso.
- No intente cargar baterías no recargables.
- Utilice únicamente el adaptador de corriente proporcionado.
- No desmonte, modifique ni provoque cortocircuito en el cargador.
- Mantenga el cargador alejado del agua, la humedad, las altas temperaturas y la luz solar directa.
- Asegúrese de que haya una ventilación adecuada durante la carga. No cubra el cargador.
- Supervise el proceso de carga, especialmente cuando cargue tipos de baterías nuevos o desconocidos.
- If any abnormality occurs, unplug the charger immediately.
3. Contenido del paquete
- 1 x MiBOXER C4-12 Battery Charger
- 1 adaptador de corriente (CC 12 V 5 A).
- 1 x Manual de usuario
4. Características del producto
- Four Independent Charging Slots: Each slot operates independently, allowing simultaneous charging of different battery types and sizes.
- Alta corriente de carga: Up to 3.0A charging current per slot, enabling rapid charging of high-capacity batteries.
- Amplia compatibilidad: Supports various Li-ion (4.2V/4.35V) and Ni-MH/Ni-Cd (1.48V) battery sizes, including 10340 to 26650 for Li-ion, and AAAA, AAA, AA, A, SC, C, D for Ni-MH/Ni-Cd.
- Detección inteligente: Automatically identifies battery type (Li-ion, Ni-MH, Ni-Cd) and selects the optimal charging mode.
- Pantalla avanzada: Provides real-time information such as charging current, voltage, capacity, internal resistance, and charging time.
- Monitoreo de temperatura: Automatically detects battery temperature to prevent overheating.
- Activación 0V: Capable of activating deeply discharged Li-ion batteries.
- Protecciones de seguridad: Features over-charge, over-discharge, short-circuit, and reverse polarity protection.
- Construcción duradera: Made from fire-resistant PC and ABS materials.

Image: The MiBOXER C4-12 charger highlighting its automatic functions, including optimal current matching, temperature detection, battery capacity calculation, percentage display, automatic battery recognition, 0V activation, internal resistance detection, and charging time accumulation.

Image: The MiBOXER C4-12 charger showcasing its broad compatibility with numerous Li-ion battery sizes (from 10340 to 26650) and Ni-MH/Ni-Cd battery types (AAAA, AAA, AA, A, C, D).
5. Especificaciones
| Parámetro | Valor |
|---|---|
| Modelo | C4-12 |
| Vol de entradatage / Actual | DC 12V / 5A |
| Vol de salidatage (iones de litio) | 4.2 V ± 0.1% |
| Vol de salidatage (Ni-MH/Ni-Cd) | 1.48 V ± 0.1% |
| Corriente de salida (Li-ion) | Max 4 x 3A |
| Output Current (Ni-MH/Ni-Cd) | Max 4 x 1A |
| Compatible Li-ion Batteries | 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650 |
| Compatible Ni-MH/Ni-Cd Batteries | AAAA, AAA, AA, A, SC, C, D |
| Número de ranuras | 4 |
| Material | PC + ABS (Fire-resistant) |
| Peso | 485 gramos |
| Dimensiones | 16.2 cm (Length, other dimensions not specified) |
6. Configuración
- Desembalaje del cargador: Carefully remove the C4-12 charger and its accessories from the packaging.
- Conecte la electricidad: Insert the DC plug of the provided power adapter into the input port on the back of the charger. Plug the other end of the power adapter into a suitable wall outlet (100-240V AC).
- Pantalla inicial: The charger's display will illuminate, indicating it is powered on and ready for use.

Image: The MiBOXER C4-12 smart charger shown alongside its power adapter, ready for connection.
7. Instrucciones de funcionamiento
- Inserte las baterías: Insert one or more rechargeable batteries into the charging slots. Ensure the positive (+) and negative (-) terminals of the battery match the markings on the charger. The charger will automatically detect the battery type and begin charging.
- Pantalla del monitor: The LCD screen will show real-time charging status for each slot, including voltage, current, charged capacity (mAh), internal resistance, and charging time.
- Select Slot Information: Presione el ESPACIO button to cycle through the detailed information for each individual charging slot.
- Adjust Charging Parameters (Manual Mode):
- While a battery is charging, press the ESPACIO button to select the desired slot.
- Mantenga pulsado el MODO button for a few seconds to enter manual setting mode.
- Presione el MODO button repeatedly to cycle through adjustable parameters (e.g., charging current).
- Utilice el ESPACIO button to change the value of the selected parameter.
- Once settings are adjusted, the charger will resume charging with the new parameters.
- Finalización de la carga: The charger will automatically stop charging when the batteries are fully charged. The display will indicate completion.
- Quitar las pilas: Once charging is complete, remove the batteries from the slots.

Image: The MiBOXER C4-12 charger with four batteries inserted into its slots, demonstrating its multi-slot charging capability.

Image: The MiBOXER C4-12 smart charger illustrating its versatility by showing various devices that use the types of batteries it can charge, such as toy cars, remote controls, electronic cigarettes, electric shavers, flashlights, and microphones.
8. Mantenimiento
- Limpieza: Desconecte el cargador de la corriente antes de limpiarlo. Utilice un paño suave y seco para limpiar la superficie del cargador. No utilice limpiadores abrasivos ni disolventes.
- Almacenamiento: When not in use, store the charger in a cool, dry place, away from direct sunlight and moisture.
- Evite el impacto: Do not drop or subject the charger to heavy impact.
9. Solución de problemas
- El cargador no se enciende:
- Asegúrese de que el adaptador de corriente esté conectado de forma segura tanto al cargador como al tomacorriente de pared.
- Verifique que el tomacorriente de pared funcione.
- La batería no se carga:
- Compruebe si la batería está insertada con la polaridad correcta (+/-).
- Ensure the battery is a compatible rechargeable type.
- Clean the battery contacts and charger contacts if they appear dirty.
- The battery might be deeply discharged (0V activation should attempt to revive it, but some batteries may be beyond recovery).
- Mensaje de error en pantalla:
- Refer to the specific error code (if displayed) in the full user manual for detailed instructions.
- Often indicates a battery fault (e.g., short circuit, over-voltage) or incorrect battery insertion. Remove and re-insert the battery.
- Charger or Battery Getting Hot:
- Some warmth is normal during charging. However, if it becomes excessively hot, immediately remove the battery and unplug the charger.
- Asegúrese de que haya una ventilación adecuada alrededor del cargador.
10. Garantía y soporte
The MiBOXER C4-12 charger comes with a 3 año de garantía. For any quality issues, operational questions, or technical support, please contact MiBOXER customer service. We are committed to providing 100% satisfaction and support for our products.





