1. Introdución
The ANCEL BM300PRO is an advanced Bluetooth 5.3 battery monitor designed to provide comprehensive insights into your vehicle's battery health. It monitors voltage, cranking performance, charging system (alternator), and driving data for 6V, 12V, and 24V lead-acid and lithium batteries. This manual provides essential information for proper installation, operation, and maintenance of your device.
2. Información de seguridade
Please read and understand all safety instructions before using the ANCEL BM300PRO. Failure to follow these instructions may result in damage to the device, battery, or vehicle, and could lead to personal injury.
- Protección contra a polaridade: The device features built-in reverse polarity protection. However, always ensure correct connection of the red clamp ao terminal positivo (+) e ao cl negroamp ao terminal negativo (-).
- Protección contra curtocircuítos: Integrated short-circuit protection enhances safety during use.
- Resistencia á auga: The device has an IP67 waterproof rating, making it resistant to rain, snow, and extreme conditions. Avoid submerging the device in water for extended periods.
- Entorno operativo: Use the device within its specified temperature range (up to 50 degrees Celsius).
- 6V Battery Limitation: For 6V batteries, the device supports monitoring of charge status, voltage, and temperature only. Cranking and charging tests are not supported for 6V systems.
3. Produto rematadoview
The ANCEL BM300PRO is a compact and robust battery monitor designed for a wide range of vehicles and battery types.
Características principais:
- Seguimento integral: Tracks battery voltage, cranking performance, charging system, and driving data.
- Almacenamento de datos: Records voltage, porcentaxe de cargatage, and temperature every 2 minutes, storing data for up to 72 days.
- Alta precisión: Equipped with a smart chip for over 99.6% measurement accuracy.
- Alertas intelixentes: Notifies you via the app for abnormal voltage, voltage drops, charging faults, weak cranking, or battery failures.
- Ampla compatibilidade: Supports 6V/12V/24V lead-acid (liquid, AGM, gel, EFB) and lithium-ion batteries.
- Ultra-Low Power Consumption: Consumes only 1 mA, ensuring minimal drain on your battery.
- Xestión de varios dispositivos: Monitor up to 4 batteries simultaneously via the app.
- Bluetooth 5.3: Provides a stable connection up to 15 meters (50 feet).
- Deseño robusto: IP67 waterproof and dustproof ABS casing.
Contido do paquete:
- 1 x ANCEL BM300PRO Bluetooth Battery Monitor
4. Configuración
Follow these steps to install and set up your ANCEL BM300PRO Battery Monitor.
4.1 Instalación do dispositivo
- Limpar os terminais da batería: Ensure the battery terminals are clean and free of corrosion for optimal contact.
- Conectar Clamps:
- Conecta o vermello rubber-handled clamp ao positivo (+) terminal da batería.
- Conecta o negro rubber-handled clamp ao negativa (-) terminal da batería.
Ensure a firm and secure fit on the battery terminals for reliable data.
- Dispositivo seguro: Mount the ANCEL BM300PRO in a suitable location, away from thick metal obstructions to ensure the best Bluetooth signal. The device is designed for permanent installation.

Image: The ANCEL BM300PRO device with its red and black clamps securely attached to a vehicle battery.
4.2 Instalación e emparellamento da aplicación
- Descarga a aplicación: Download the "ANCEL BM300PRO" application from your smartphone's app store (iOS or Android).
- Activar Bluetooth: Asegúrate de que o Bluetooth estea activado no teu smartphone.
- Abre a aplicación e emparella: Open the ANCEL BM300PRO app. The app will guide you through the pairing process. The Bluetooth 5.3 connection offers fast and reliable pairing.
- Conceder permisos: The app may request certain permissions (e.g., location, storage). Grant the necessary permissions for full functionality. Your personal information is not disclosed.

Image: The ANCEL BM300PRO app interface displaying the monitoring of multiple batteries.
5. Instrucións de funcionamento
Once installed and paired, the ANCEL BM300PRO continuously monitors your battery. Access real-time data and historical records through the dedicated app.
5.1 Monitorización en tempo real
- Open the "ANCEL BM300PRO" app on your smartphone to view live battery data, including voltage, porcentaxe de cargatage e temperatura.
- The device updates data every 2 minutes.
- You can monitor the battery status from inside your vehicle or home, up to 15 meters (50 feet) away, without opening the hood.
5.2 Cranking and Charging Tests
- The app provides functions for testing cranking performance and the charging system (alternator).
- Follow the on-screen instructions within the app to perform these tests.
- Nota: Cranking and charging tests are not supported for 6V batteries.

Image: The ANCEL BM300PRO app displaying a charge test, including voltage especificacións.
5.3 Datos históricos e análise
- The device stores up to 72 days of historical data.
- Access this data within the app to analyze battery aging, verify repairs, or plan for battery replacement.
- Data can be exported to Excel for further analysis.

Image: A digital display showing a graphical representation of 72 days of historical battery data.
5.4 Alertas intelixentes
- The app will send instant notifications for detected anomalies such as abnormal voltage, voltage drops, charging faults, weak cranking, or impending battery failures.
- These alerts help protect your battery from unexpected breakdowns.

Image: An alarm system with visual indicators alongside the smartphone app interface displaying abnormal alert visualizations.
6. Mantemento
The ANCEL BM300PRO is designed for minimal maintenance.
- Limpeza: Wipe the device with a soft, dry cloth if it becomes dirty. Do not use harsh chemicals or abrasive cleaners.
- Consumo de enerxía: The device has an ultra-low power consumption of 1 mA, which is negligible and will not significantly drain your battery during long-term monitoring.
- Protección ambiental: The IP67 rating ensures protection against dust and water ingress, making it suitable for various weather conditions.

Image: A circuit board with a visible blue processor, representing the device's low power consumption.
7 Solución de problemas
If you encounter issues with your ANCEL BM300PRO, refer to the following common problems and solutions.
| Problema | Causa posible | Solución |
|---|---|---|
| Sen conexión Bluetooth | Bluetooth is off on phone; device out of range; metal obstructions; app not open. | Ensure phone Bluetooth is on. Move closer to the device (within 15m/50ft). Relocate the device away from thick metal. Open the ANCEL BM300PRO app. |
| Lecturas inexactas | Loose connections; corroded battery terminals; incorrect battery type selected in app. | Comproba que clamps are securely attached to clean battery terminals. Verify the correct battery type (lead-acid/lithium) and voltage (6V/12V/24V) are selected in the app settings. |
| No Alerts Received | App notifications disabled; app not running in background; device not connected. | Check your phone's app notification settings. Ensure the ANCEL BM300PRO app is allowed to run in the background. Confirm the device is connected via Bluetooth. |
| 6V Battery Cranking/Charging Test Not Working | This functionality is not supported for 6V batteries. | This is expected behavior. The device only monitors charge status, voltage, and temperature for 6V batteries. |
8. Especificacións
| Especificación | Valor |
|---|---|
| Modelo | ANCEL BM300PRO |
| Compatibilidade | 6V/12V/24V Lead-Acid (Liquid, AGM, Gel, EFB) & Lithium-ion Batteries |
| Gama CCA | 100-2000 CCA (for 12V/24V tests) |
| Versión Bluetooth | 5.3 |
| distancia wireless | Ata 15 metros (50 pés) |
| Precisión de medición | > 99.6% |
| Almacenamento de datos | Up to 72 days (voltage, charge %, temperature) |
| Consumo de enerxía | 1 mA (ultra-low) |
| Clasificación impermeable | IP67 |
| Temperatura de funcionamento | Ata 50 °C |
| Dimensións | 13.4 x 11 x 3 cm |
| Peso | 60 gramos |
9. Garantía e soporte
ANCEL is committed to providing high-quality products and customer satisfaction.
- Garantía: For specific warranty details, please refer to the product packaging or contact ANCEL customer service.
- Soporte técnico: If you require technical assistance or have questions not covered in this manual, please visit the official ANCEL websitio ou póñase en contacto co seu equipo de atención ao cliente.
- Recursos en liña: Check the ANCEL brand store on Amazon or the official website for FAQs, software updates, and additional resources.







