Bluetooth Battery Tracker PLUS. The Antigravity Battery Tracker +PLUS is Antigravity's latest and most advanced Bluetooth Monitor for your vehicle battery or system. Now, one Battery Tracker can do it all! Works with multiple battery types and multiple voltages. Use it on any 6v, 12v or 24v battery system: Cars, trucks, motorcycles, RVs, ham radios, boats and more. Simple to install and track your battery's health and status. Works on all 6V, 12V and 24V batteries, lithium and lead-acid / AGM. Easily monitor your battery status through your phone using the app. Monitor voltage, and test starting performance and the charging system (cranking and charging tests for 12v and 24v). Immediate real-time data and historical data up to 72 days. Download monthly data as a spreadsheet. Check where your vehicle was last parked. Capture mileage and cost data.