ANCEL BM300 Bluetooth Battery Monitor Feature: Support: All 12V Car Battery Available:Android 4.3 and Later IOS: IOS 7.1 and Later iPhone: 4s and Later iPad: iPad 3 and Later Language:Multi Language Connection method:Bluetooth 4.0 App Name: please scan machine backup or user manual scan code, download software. ANCEL BM300 Bluetooth Battery Monitor Advanced Features: Installed in the car battery Real-time Monitoring Through Mobile Phone App. List the time of each drivin Compatible with all 12-volt vehicle batteries Check charging and cranking(alternator) systems Engine starting detect automatically Receive notification of battery conditions when enter Bluetooth range Show voltage & charge info. when user is close to the vehicle,no need open app Automatic synchronization when enter Bluetooth range Data stored in battery monitor up to 35 days if out of sync Alert mobile phone if some data abnormal Check starting(cranking) system when each time engine started Check starting voltage each hundredth of a second when engine is starting Review historical data graphically Protection of short-circuit and reverse connection ANCEL BM300 Bluetooth Battery Monitor NOTE: 1. Alert users if charge is low 2. Review charge history in graph mode 3. Show the state of charge of battery in real time 4. Near-Filed Perception to get notification automatically Voltage Test Slider appears when you tap on the Historical Voltage Graph, displaying the test time time and the battery voltage. Cranking Test When the engine starts,the device will test the cranking system automatically and store the test result. Charging Test Checks charging system (alternator),click "Start Test", it will automatically test idle condidtion voltage. Trip Recording This feature automatically records your route,mileage statistics, and other trip-related historical information. Abnormal Alert Function When the battery temperatiure abnormal, lower power,low voltage,system failure,it will automatically send an alarm to your mobile phone Status of Health Display (SOH) Battery Normal Charging Low Power 30 Days Historical Data It saves historical data for 30 days every 2 minutes, records the track, cost, anddriving habits of each trip, and can be exported to Excel files. How to Use it 1.Install the Device on Car Battetry. 2.Scan the Device QR Code 3.Download the APP 4.Start Diagnosis