【Why Choose ANCEL BM300 Pro?】
BM300 Pro is an upgraded Bluetooth battery monitor designed for real-world use — not just cars, but trucks, boats and RVs. Supports 6V / 12V / 24V systems, making it a true all-in-one solution for daily driving and heavy-duty vehicles.
【Expanded 24V Compatibility】
Most battery monitors stop at 12V. BM300 Pro goes further — fully compatible with 24V systems, ideal for:
·Diesel trucks
·RVs & campers
·Boats & marine batteries
One device, multiple vehicles.
【Full Battery Health Monitoring】
Track everything that matters:
·Battery voltage (real-time)
·Cranking system test
·Charging system test
·Driving & usage records
·72 days of historical data stored in the app
Perfect for spotting battery issues before breakdowns happen.
【Bluetooth 5.3 – Faster & More Stable】
Upgraded to Bluetooth 5.3 for:
·Faster connection
·Stronger signal
·Lower power consumption
Just open the app and check your battery status anytime.
【Install Once, Monitor Forever】
·Permanent installation on battery terminals
·Ultra-low power draw (≈1mA)
·No need to reinstall or reconnect
A silent “health guard” for your battery.
【>99.6% Accurate Readings】
·Intelligent chip for precise voltage data
·Secure red & black terminal design
·More accurate the longer it monitors
Trust the data, not guesswork.
【Smart Alarm & Safety Protection】
Get instant alerts via APP when:
·Voltage is abnormal
·Battery is malfunctioning
·Power drops unexpectedly
Built-in:
·Reverse connection protection
·Short-circuit protection
·Fire-resistant ABS shell
·IP67 waterproof — safe for outdoor & marine use
【Wide Application】
Compatible with all 6V / 12V / 24V lead-acid batteries, including:
·Flooded
·AGM (flat & spiral)
·Gel
·EFB
Suitable for: Car / Truck / Motorcycle / Boat / RV / Off-road / Solar systems









