ANCEL BM300 12V Battery Monitor with Charging, Cranking System Test & Alarm

Price: $45.99 - $35.99
(as of Oct 12, 2026 19:42:49 UTC – Details)

From the brand

ANCEL is committed to solving automative aftermarket problem cost-effectively,effciently and conveniently

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ESSENTIAL TOOL FOR YOUR GARAGE: Keep your car battery in top condition and protect it from the effects of disuse and harsh weather with the BM300. This smart battery monitor tracks important metrics like voltage, cranking performance, charging system health, and travel history. With real-time alerts and continuous monitoring, it helps you take proactive action to keep your battery in peak condition and avoid expensive replacements
SEAMLESS MONITORING VIA BLUETOOTH: No more staying close to the monitor! This compact 3.2-ounce battery monitor allows you to easily track real-time battery data from inside your car or up to 33 feet away. Whether it’s rainy, sunny, or snowy, it keeps you connected with ease. Note: Bluetooth connectivity may be affected by extreme cold or obstacles. For optimal performance, use it in a clear, open area with suitable temperatures
EASY TO USE: Install once and permanently attach to your battery, saving the hassle of repetitive installation. Access battery health data directly from your phone and enjoy real-time monitoring as long as the APP is on. In addition, with an average power consumption of only 1.5mA that it can be almost unnoticeable. So you don’t have to worry about the BM300 draining your battery by being attached to it all the time (Application can monitor only one device at once)
QUALITY WITH SAFETY FIRST: Built-in electrical overload circuit breaker with reverse polarity protection function ensures user safety during operation. The fire-resistant housing enhances high-temperature durability for added safety. 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
HIGH ACCURACY: The copper construction on the connector ensures superior conductivity, while the built-in smart chip delivers readings with over 99.5% accuracy. Note: To ensure accurate results, please verify the correct internal and external conditions and temperature (above/below 0°C)
WIDE APPLICATION: The bluetooth battery monitor compatibles with all 12V 100-2000CCA batteries, including regular flooding, AGM flat, AGM spiral, GEL and EFB batteries for cars, trucks, hybrids, suv’s, boats, RV’s, motorcycles, and even solar power systems. It can meet the needs of batteries of different models
TRACK & MONITOR BATTERY PERFORMANCE: Use the “ Trip” function to observe the monitored output curve of each battery check and gain insight into usage patterns over the past 30 days. It records every instance of power consumption, giving you a comprehensive overview of battery performance
Customers find the battery monitor provides accurate voltage readings and is easy to use, making it a game-changer for monitoring 12V and 24V lithium boat batteries. The Bluetooth connectivity receives mixed feedback – while some customers can connect directly to their iPhone, others report frequent disconnections. The app functionality and battery life also get mixed reviews, with some praising the app while others find it problematic, and several customers note that the battery frequently shows low levels.