Product Overview Antigravity Bluetooth Battery TrackerVerified Details Simple to install and track your battery’s health and status with the free Battery Tracker App for iOS or Android, Bluetooth 4.0. For Use With 12V Lithium Batteries 12V Lead/Acid Batteries Easily monitor your battery status through your phone using the App Immediate real-time data and history up to 31 days Only draws 1 milliamp. Installs in less than two minutes The Antigravity Battery Tracker monitors your vehicle battery status through your phone or tablet by using our free Battery Tracker App (iOS or Android, Bluetooth 4.0). The simple interface makes it easy to monitor the battery’s voltage, automatically check its performance during starting, and test your alternator’s charging operation. The tracker will even send a warning to your phone if your battery is getting low and needs a charge. The Battery Tracker is not just for Car, Truck or Motorcycle batteries but can be used on ANY 12v system: RVs, Ham Radio batteries, Boats and more. Why would I use a Battery Tracker? Aside from giving you the Voltage Reading and providing Starting and Charging system tests, the Battery Tracker can be useful in many other areas