(Upgraded BM300) ANCEL BM300 Pro 6V 12V 24V Battery Monitor - Bluetooth 5.3 Battery Monitor with Charging, Cranking System Test & Alarm - IP67 Waterproof Voltmeter for Trucks, Cars, Motorcycles, Boats

• 🩺Key Features - BM300 Pro monitors battery health, including voltage, cranking & charging system and driving records. It monitors abnormal battery conditions and takes appropriate measures to protect the battery. With 72 days of data storage, you can compare changes before and after taking measures, giving you a better understanding of your battery's status.

• 🩺5.3 Ver Bluetooth Connection - Say goodbye to checking the battery status under the hood. Whether it's scorching hot or freezing cold, or even rainy days, the 3.2oz battery monitor lets you comfortably monitor real-time battery data from inside your car or up to 16 feet away, allowing for proactive intervention. Plus, with the Bluetooth 5.3 upgrade, you'll identify and connect to Bluetooth even faster.

• 🩺Easy to Use - Install once and permanently fix onto your battery without the trouble of repeated installation. Access the battery’s health data directly from your phone and enjoy real-time monitoring by opening the app. Additionally, the power consumption is as low as 1mA, almost negligible- making it a hassle-free stethoscope for your car battery.

• 🩺＞99.6% Accurate Readings - Equipped with an intelligent chip for precise data readings. The connector design features red and black rubber handles, making it easy to place on battery terminals and achieve a snug fit for more accurate readings the longer you monitor.

• 🩺Reliable Safety Measures - Built-in Reverse Connection & Short-circuit Protection function ensures user safety during operation. The fire-resistant ABS shell & IP67 Waterproof enhances durability. In addition to these safety features, it also boasts exceptional alarm functionality. Which will notify you via the APP when the battery encounters malfunctions, abnormal voltage or power, alleviating your concerns in this regard.

• 🩺Wide Application - BM300 Pro battery monitor is compatible with all 6V/12V/24V 100-2000CCA lead-acid batteries, including conventional flooded, AGM flat plate, AGM spiral, gel and EFB batteries for cars, trucks, hybrid vehicles, off-road vehicles, boats, RVs, motorcycles, and even solar power systems. It can meet the needs of different types of batteries.