Antigravity BTR-3 Bluetooth Battery Monitor & Tracker Plus – 6V / 12V / 24V Lithium & Lead-Acid, Real-Time Voltage, Cranking & Charging Tests, 72-Day History, App Alerts

Monitor Your Battery Before It Fails The Antigravity BTR-3 Battery Tracker PLUS is a Bluetooth battery monitor designed to help you avoid unexpected battery failure. It connects directly to your battery terminals and sends real-time data to your smartphone through the free Antigravity app. Unlike a basic voltage indicator, the BTR-3 provides continuous monitoring and automatic logging of: Real-time battery voltage Cranking performance during engine start Charging system output 72 days of voltage history Ambient temperature near the battery If your battery begins to discharge due to parasitic draw or extended storage, you’ll see it happening — and receive alerts before the battery is too low to start your vehicle. Ideal For: Vehicles that sit for days or weeks Fleet vehicles Performance and track cars RV and boat owners Lithium battery users Anyone who wants peace of mind The BTR-3 works with 6V, 12V, and 24V systems and supports Lithium (LiFePO4), AGM, and Lead-Acid batteries. Installation takes less than two minutes, draws only 1mA of power, and provides valuable battery insights directly on your phone. Stay ahead of battery problems — not stranded because of them.

• 🔋 PREVENT DEAD BATTERIES BEFORE THEY HAPPEN Monitor your battery’s real-time voltage from your phone and receive alerts when voltage drops. Avoid coming back to a vehicle that won’t start.
• 📊 FULL BATTERY HEALTH MONITORING Automatically logs voltage, cranking performance, and charging system data. Easily determine if the issue is your battery, alternator, or parasitic drain.
• 📈 72-DAY VOLTAGE HISTORY + DATA EXPORT Track battery performance over time with graphical history. Download monthly logs as a spreadsheet for deeper analysis or fleet tracking.
• ⚡ WORKS WITH 6V, 12V & 24V – LITHIUM & LEAD-ACID Compatible with Lithium (LiFePO4), AGM, and Lead-Acid batteries. Ideal for cars, trucks, motorcycles, RVs, boats, and powersports.
• 📲 BLUETOOTH APP + SMART ALERTS BLE 5.3 connection with customizable alerts. View last parked location, monitor up to 4 vehicles in the app, and install in under 2 minutes.