Antigravity Battery MonitorConnect theAntigravity Battery Monitor to your bike's battery and monitor its health using an app on your smartphone.The app has three main pages: Voltage Test, Cranking Test and Charging Test. The simple interface makes it easy to monitor the batterys voltage, automatically check its performance during starting, and test your alternators charging operation. You can view real-time data as well as historical results (31 days) that graphically displays the dates, voltages and more. The tracker will even send a warning to your phone if your battery is getting low and needs a charge. You can choose the alerts and notifications you want to receive.Features: Easily monitor your battery status through your phone using an Antigravity Battery Tracker app (iOS or Android) Monitor voltage, starting performance and the charging system Immediate real-time data and history up to 31 days Sends alerts to your phone when within Bluetooth range See evidence of parasitic draws Track voltage drop within total loss battery systems 70mm L x 50mm W x 18mm H (2.8" L x 2" W x 0.7" H) Bluetooth 4.0 Short circuit and reverse connection protection