ANCEL BM300 12V Battery Monitor - Bluetooth 4.0 Automotive Voltmeter with Charging, Cranking System Test Alarm - Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks ESSENTIAL TOOL FOR YOUR GARAGE: 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 0C) 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 Battery Monitor BM300 Main Features: 1.Receive notification of battery conditions when enter BLE range; 2.Check starting system and charging system (alternator); 3.List the time of each driving; 4.Alert mobile phone if some data abnormal; 5.Review voltage history in graph mode; 6.Short-circuit and reverse connection protection; 7.Data stored in device up to 35days if out of sync; 8.Ultra-low power consumption, average current: 1.0 mA; 9.Connect with battery directly, no code; 10.Free app for iOS Android users; 11.Compatible with all 12-volt vehicle batteries; Voltage: 9-16V; 12.Temp: -40-85C. Battery Monitor BM300 Principle: Check battery state on phone APP via Bluetooth 4.0 when device is installed; Use for: All 12V Vehicle Battery; APP Name: Battery Monitor; Available: Android: 4.3 and later; iPhone: 4S and later; iPad: iPad3 and later; Suitable for: *DIY users; *Battery service station; *Garage/workshop; *Tool store; *Vehicle/Battery manufacturer. NOTE: Alert users if charge is low; Review charge history in graph mode; Show the state of charge of battery in real time; Near-Filed Perception to get notification automatically. Shipping We offer FREE shipping on all orders! We ship within one business day of payment, usually sooner. We use a selection of shipping services such as UPS, FedEx, USPS etc. We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed. Local pickups and combined shipping options are provided for some items. We ship on the same day if purchases are made before 1 PM eastern time. We are offering free shipping and free return. Return You can return a product for up to 30 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. Payment We accept payment by any of the following methods: PayPal Please pay as soon as possible after winning an sale, as that will allow us to post your item to you sooner! Feedback Customer satisfaction is very important to us. If you have any problem with your order, please contact us and we will do our best to make you satisfied. Contact Us If you have any queries, please contact us via. We usually respond within 24 hours on weekdays. Please visit our store to check out other items for sale! Thank you for shopping at our store.