1. Introducción
This manual provides comprehensive instructions for the operation and maintenance of your FOXWELL NT604 OBD2 Scanner and BT100 Pro Battery Tester. These devices are designed to assist in diagnosing vehicle issues and assessing battery health, providing valuable information for vehicle maintenance.
The FOXWELL NT604 is an advanced diagnostic scan tool capable of reading and clearing fault codes, displaying live data, and performing various tests on key vehicle systems. The FOXWELL BT100 Pro is a professional battery analyzer designed to test 12V batteries, providing accurate readings on battery voltage, CCA, internal resistance, and overall health.
2. Configuración
2.1 Desembalaje del dispositivo
Carefully remove all components from the packaging. Verify that all items listed in the product packaging are present. Retain the packaging for future storage or shipping.
2.2 Encendido inicial
The NT604 scanner typically powers on when connected to a vehicle's OBD-II port. The BT100 Pro battery tester powers on when connected to a 12V battery.

Figure 2.1: The FOXWELL NT604 OBD2 Scanner and BT100 Pro Battery Tester.
3. Operación
3.1 FOXWELL NT604 OBD2 Scanner Operation
The NT604 scanner connects to your vehicle's On-Board Diagnostics II (OBD-II) port to access vehicle system information.
- Localice el puerto OBD-II: The OBD-II port is usually located under the dashboard on the driver's side.
- Conectar el escáner: Plug the NT604's diagnostic cable into the vehicle's OBD-II port. The scanner will power on automatically.
- Comunicación del vehículo: The scanner will attempt to establish communication with the vehicle's ECU (Engine Control Unit). Follow on-screen prompts.
- Navegación del menú principal: Use the navigation buttons (up, down, left, right, OK, ESC) to select desired functions from the main menu. Common functions include:
- Leer códigos: Retrieves Diagnostic Trouble Codes (DTCs) from the vehicle's systems.
- Códigos claros: Borra los DTC de la memoria del vehículo. Note: Clearing codes does not fix the underlying problem. Address the issue before clearing codes.
- Datos en tiempo real: Displays real-time sensor data from the vehicle.
- Congelar fotograma: Captura una instantánea de las condiciones de funcionamiento del vehículo en el momento en que se estableció un código de falla.
- Preparación I / M: Comprueba el estado de los monitores relacionados con las emisiones.
- System Diagnostic: Accesses specific vehicle systems like Engine, ABS, SRS (Airbag), and Transmission for detailed diagnostics.

Figure 3.1: The NT604 scanner's main menu showing various OBDII functions.

Figure 3.2: The NT604 scanner's capability to diagnose Engine, ABS, SRS, and Transmission systems.
3.2 FOXWELL BT100 Pro Battery Tester Operation
The BT100 Pro is designed for testing 12V automotive batteries. It can perform tests both in-vehicle and out-of-vehicle.
- Prepare la batería: Asegúrese de que los terminales de la batería estén limpios y libres de corrosión.
- Conecte el probador:
- Conecte el cable rojoamp al terminal positivo (+) de la batería.
- Conecte el cable negroamp al terminal negativo (-) de la batería.
- El probador se encenderá automáticamente.
- Seleccione el tipo de prueba:
- In-Vehicle Test: For batteries installed in the vehicle.
- Out-of-Vehicle Test: For standalone batteries.
- Seleccione el tipo de batería: Choose the correct battery type (e.g., Regular Flooded, AGM Flat Plate, AGM Spiral, GEL) from the menu. Incorrect selection may lead to inaccurate results.
- Enter CCA Rating: Entrada del arranque en frío Amps (CCA) rating found on the battery label.
- Realizar prueba: The tester will perform the analysis and display results such as:
- Volumentage
- CCA medido
- Resistencia interna
- Estado de salud (SOH)
- Estado de carga (SOC)

Figure 3.3: The BT100 Pro supports both in-vehicle and out-of-vehicle battery testing.

Figure 3.4: The BT100 Pro provides detailed battery status including internal resistance, CCA, and health display.
4. Mantenimiento
4.1 Limpieza
Limpie el dispositivo con un paño suave, damp Paño. No utilice limpiadores abrasivos ni disolventes. Asegúrese de que el dispositivo esté seco antes de guardarlo.
4.2 Actualizaciones de software
Consulte periódicamente el sitio web oficial de FOXWELL website for software updates for the NT604 scanner. Updates can improve performance, add new features, and expand vehicle compatibility. Follow the instructions provided on the website for updating the device firmware.
4.3 Almacenamiento
Store the devices in a clean, dry environment, away from extreme temperatures and direct sunlight. Keep cables neatly coiled to prevent damage.
5. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| NT604 no se enciende. | Loose OBD-II connection; vehicle's OBD-II port fuse blown; vehicle battery low. | Ensure secure connection. Check vehicle's OBD-II port fuse. Verify vehicle battery voltage. |
| NT604 fails to link with vehicle. | Incorrect protocol selected; vehicle ignition off; faulty connection. | Ensure ignition is ON. Check cable connection. Try a different vehicle if possible to isolate the issue. |
| BT100 Pro does not power on. | Loose battery clamp conexión; volumen de la bateríatagy demasiado bajo. | Asegúrese de clamps are securely attached to clean battery terminals. Test a different battery if available. |
| Inaccurate BT100 Pro readings. | Incorrect battery type or CCA entered; dirty battery terminals. | Verify battery type and CCA input. Clean battery terminals thoroughly. |
6. Especificaciones
Escáner FOXWELL NT604 OBD2
- Sistemas compatibles: Engine, ABS, SRS (Airbag), Transmission
- OBDII Modes: 10 modes (Read Codes, Clear Codes, Live Data, Freeze Frame, I/M Readiness, Component Test, O2 Monitor Test, On-Board Monitor Test, Retrieve Vehicle Info, Modules Present)
- Fuente de energía: Vehicle OBD-II port
FOXWELL BT100 Pro Battery Tester
- Volumen de la bateríatage: 12 V
- Rango de prueba: 100-1100 ACC
- Tipos de baterías admitidas: Inundado regular, placa plana AGM, espiral AGM, GEL
- Resultados de la prueba: Volumentage, CCA, Internal Resistance, State of Health (SOH), State of Charge (SOC)
- Fuente de energía: Battery Powered (from the tested battery)

Figura 6.1: Example of battery test results displayed on the BT100 Pro.
7. Garantía y soporte
7.1 Información de garantía
FOXWELL products are covered by a limited warranty against defects in materials and workmanship. Please refer to the warranty card included with your product or visit the official FOXWELL webSitio para conocer los términos y condiciones detallados de la garantía.
7.2 Soporte técnico
For technical assistance, software updates, or service inquiries, please contact FOXWELL customer support. Contact information can typically be found on the official FOXWELL websitio o en el embalaje del producto.
Websitio: www.foxwelltech.com (Examp(el enlace, verificar sitio oficial)





