ANCEL BM300 Pro Bluetooth Battery Monitor 6V 12V 24V - Waterproof & Multi-System Support

Advanced Battery Monitoring for Cars, Trucks, Boats & More

The upgraded ANCEL BM300 Pro is a cutting-edge Bluetooth 5.3 battery monitor designed for 6V, 12V, and 24V systems. Compatible with cars, motorcycles, trucks, boats, RVs, and even solar power systems, it provides real-time monitoring and in-depth diagnostics for a wide range of lead-acid battery types, including flooded, AGM, gel, and EFB batteries.

Key Features

• Supports 6V/12V/24V lead-acid batteries including flooded, AGM flat plate/spiral, gel, and EFB
• Bluetooth 5.3 connectivity – faster pairing and stable transmission up to 10m
• IP67 waterproof with fire-resistant ABS shell for extreme environments
• Cranking and charging system test, real-time voltage monitoring, driving record tracking
• Stores up to 72 days of data for accurate trend analysis and diagnostics
• Supports simultaneous monitoring of up to 4 batteries
• Reverse connection & short-circuit protection for safe operation
• Accurate readings with intelligent chip and sturdy terminal grip design

Bluetooth 5.3 Wireless Monitoring

With the BM300 Pro’s upgraded Bluetooth 5.3 technology, you can effortlessly monitor your battery’s health and performance from your smartphone. Even in harsh weather, enjoy full visibility into your system without lifting the hood.

Effortless Installation and Real-Time Alerts

The BM300 Pro installs once and remains securely connected to your battery. It consumes minimal power (just 1mA), and through the companion app, you’ll receive alerts for abnormal voltage, power loss, or potential battery failure — helping you prevent unexpected breakdowns.

What's Included

• ANCEL BM300 Pro Battery Monitor
• Quick Start Guide
• Packaging Dimensions: 5.2 x 4.4 x 1.1 inches

Important Notice

While Bluetooth performance is excellent, extreme cold or physical obstructions may reduce connectivity range. For best results, use in open, clear areas with moderate temperatures.

Reliable Battery Health Protection

From professional mechanics to daily drivers, the BM300 Pro ensures your vehicle's power system is operating at its best — safely, accurately, and intelligently.