ANCEL BM Series 24V 12V 6V Battery Monitor – BM300 Pro Bluetooth 5.3 Battery Monitor with Charging, Cranking System Test & Alarm – IP67 Waterproof Voltmeter for Trucks, Cars, Motorcycles, Boats

Price: $55.99
(as of Nov 04, 2025 15:19:46 UTC – Details)

From the brand

About ANCEL

ANCEL specializes in producing high-quality, affordable automotive products. Delivering exceptional value and reliability to customers.

Battery Monitor/Tester

Two/Four/Full System Scanner

Specific OBD2 Scanner

Automotive Smoke Machine

Heavy Duty Truck Scanner

ANCEL is a professional manufacturer of automotive products, focusing on affordable prices, top quality. Our products cover OBD2 code reader, battery tester, smoke leak detector and many more tools.

We do listen to every customer and our vision is to be one of the most trusted brands by our customers, the best in automotive technology and bring the best technology experience to every customer.

Our Vision

We strive to make friends with our customers with excellent products and quality services, and to be the company most trusted by our customers.

Our Mission

To provide professional, efficient and high quality automotive diagnostic products so that every car owner around the world can enjoy a better life made possible by technology.

Our Value

The company constantly strives for product quality, technology, design and sustainability and adheres to the spirit of people-oriented and innovative efforts to make great contributions in the field of automotive technology.

Product Dimensions ‏ : ‎ 4.33 x 0.98 x 5.12 inches; 2.12 ounces
Item model number ‏ : ‎ ‎BM300PRO
Date First Available ‏ : ‎ March 11, 2024
Manufacturer ‏ : ‎ ANCEL
ASIN ‏ : ‎ B0CXP8RRNR
Best Sellers Rank: #13,826 in Automotive (See Top 100 in Automotive) #27 in Battery Testers
Customer Reviews: 4.3 4.3 out of 5 stars 1,078 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
EXPANDED 24V COMPATIBILIT – Upgrade from basic 12V monitors. Engineered to support 24V systems in addition to 12V/6V, the BM300 Pro empowers you to confidently monitor the battery health of your diesel truck, large RV, or boat. This expanded capability meets the needs of more demanding power systems, providing a monitoring solution that grows with your requirements
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
BLUETOOTH 5.3 Ver. – Feel the technological leap. Compared to older Bluetooth vers., BM300 Pro offers a rock-solid connection, extends the usable range from your phone, and consumes significantly less power, ensuring both device and battery longevity. Plus, connect to Bluetooth even faster. Tip: For optimal performance, we recommend using the device in an open environment, free from thick walls or metal structures
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% ACCURANT 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 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