Bluetooth Battery Tracker PLUS


The Antigravity Battery Tracker +PLUS is our 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 our 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.
  • Sends alerts to your Phone when within Bluetooth range.
  • Only draws 1 milliamp. No significant drain on battery.
  • Installs in less than two minutes.
  • Use unlimited Trackers on your fleets and monitor up to 4 Vehicles at a time in the App.

In stock

UPC: 711811704796 SKU: AG-BTR-3 Category: Tag:

Battery Tracker +PLUS for Lithium and Lead/Acid

Bluetooth Monitoring System

Our latest Tracker does it all! The Antigravity Battery Tracker +PLUS has a cool new look, slim profile, and major advancements in all areas to offer more features than ever. It can monitor any vehicle or system with a 6v, 12v or 24v Battery, all from your phone with our free Battery Tracker App (iOS or Android, Bluetooth BLE 5.3). With new features like GPS Location Finder and up to 72 days of Voltage Logs, our Tracker +PLUS is a valuable tool for anyone who wants to keep tabs on their battery. Simply attach the fork connectors to your battery terminals, secure the Tracker to your battery with provided velcro pad, then it’s ready to send battery data to your phone using our App.

Monitor your battery with our Tracker PLUS App

Track Battery Status from Your Phone

Free App with tons of features! Our app makes it easy to monitor your battery’s voltage, automatically check its performance during starting, and test your alternator’s charging operation. Quickly view real-time data as well as historical results (72 days) in the App. Graphically displays the dates, voltages and more. Download monthly data to a spreadsheet file for easy review or to keep a longer history. The tracker can 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.

App requires smartphones with Android 4.3 and higher, or iPhone 4S and higher.

Features List

  • General Battery Status (“battery ok”, “charging”, “low power”).
  • Real-time State of Charge (SoC) percentage.
  • Real-time Voltage reading.
  • Real-time Voltage graph over 5-minute span.
  • Real-time Temperature (ambient, around tracker).
  • Cranking Test feature (12v and 24v batteries). Learn more below.
  • Charging Test feature (12v and 24v batteries). Learn more below.
  • GPS Location Finder feature (track the last location vehicle was parked/turned off).
  • History Graph with 72 days of data (voltage, state of charge, temperature, etc.).
  • See the exact times you drove, for how long, and when your vehicle was charging or parked.
  • Export/download monthly data to a spreadsheet to save or review further.
  • Daily Power Notification option for battery power status (you can set how many hours between notifications).
  • Power Percentage Alarm option (sends notification if battery SoC falls to either of two percentages you set for the alarm).
  • Abnormal Cranking Notification option (you can set how many hours between notifications).
  • Track Mileage and Cost data by setting your country’s Currency unit, your Fuel price, and your vehicle’s Fuel consumption.
  • Monitor up to 4 batteries/trackers at a time within the App, and name them for easy reference.
  • Select your primary Language for use with the App.


Why would I use a Battery Tracker? My Car has a voltage indicator already…
Aside from giving you the Voltage Reading and providing Starting and Charging system tests, the Battery Tracker can be useful in many other areas:

  The Battery Tracker will allow you to monitor the level of Parasitic Draw on your vehicle’s battery and how fast the battery is discharging. For example if in storage or during the week you find your car is draining quickly you will be able to graphically see this and be alerted to it. If your app is ON and if you walk within 30 ft. of your Car the Battery Tracker will transfer the current data to your phone for you to review.

  If your Battery is getting low on energy and needs a Charge you can set the Battery Tracker to Alert you by phone BEFORE you come back to a dead battery and a car that won’t start. This allows you to be alerted to put your Battery on a Charger before it’s dead. This can work great for companies with Fleets, or for persons with Cars that don’t get driven often (Sport Cars).

  You can monitor your Vehicle Charge level over the span of 72 days. This allows you to see your level of discharge during time in storage, but also if you are driving the car you can see the history of when it was started, when you are driving (voltage will be higher due to Alternator Charging), and you can also see each Start the car has done over that period of time and review this on a graph that shows voltage every 2 minutes over 72 days. Also if anybody has driven the Car while you were away, you would know because the Start will show as well as the elevated voltage when driving.

  You can verify if your Vehicle’s charging system is working, and at what Voltage your Alternator is charging the battery. This could be useful to home mechanics to verify charging, and also eliminate the charging system as a potential cause of a problem.

  For Racers and Track day enthusiasts it can give data on the battery’s state of charge, and alternator’s output during time on the track. Additionally for Total Loss systems it can document the voltage decline while in operation.

Voltage Test

Real-Time Voltage and History on the Battery Tracker PLUS App

The Voltage Test features let you monitor your battery’s real-time voltage as well as fluctuations and will track this data over 72 days for your review. This is Automatic, not manually run. The real-time data is shown on the App’s main page, and you can go to the History page to see data for the past 72 days.

  • Real-time Voltage reading.
  • Real-time Voltage Graph over 5 minutes span.
  • Real-time Charge percentage.
  • General Charge status (“ok”, “charging”, “low charge”).
  • Voltage History Graph with 72 days of data.

Cranking Test

Cranking Test via the Battery Tracker PLUS App

The Cranking Test automatically logs data for each start of your vehicle. It allows you to see if your battery is getting weaker and not staying in a high enough voltage range when the engine is started, which may indicate an aging battery or a low state of charge.

  • Automatically logs Cranking date and time on each Start attempt of vehicle.
  • Actual Cranking Voltage reading.
  • General Cranking Voltage reading (“ok”, “low voltage”) with colored indicators.
  • Cranking Voltage Graph over the number of seconds the Start took place.
  • Data stored for 1 day on the Cranking Test page but can be reviewed in Voltage History Graph that stores data for 72 days.

Charging Test

Charging Test via the Battery Tracker PLUS App

The Charge Test allows you to see if your Alternator is charging the battery and working correctly.

  • The test has three steps with basic instructions for you to follow.
  • Step 1 is an Idle Speed test.
  • Step 2 is a High Speed test.
  • Step 3 is a Diode Ripple test.

The Tests provided by the Battery Tracker are not meant to take place of a professional opinion by a mechanic. They are for alerting you of potential problems before larger problems may occur.

BTR-3 Specs

  • Average Current: 1 mA
  • Input Voltage: 3~35V (do not exceed 35v)
  • Operating Temperature: -40°F ~ 185°F
  • Dimensions: 3 x 1.5 x 0.5 inches
  • Voltage Accuracy: ±0.03V
  • Short-Circuit Protection: Built-in
  • Reverse-Connection Protection: Built-in
  • Over-Current Protection: Built-in
  • Bluetooth: BLE 5.3

Battery Tracker Comparison

Our original Battery Trackers are for only 12v Lithium (BTR-1), or only 12v Lead/Acid (BTR-2).
Now with our Tracker PLUS (BTR-3) you can monitor batteries of either chemistry whether it’s 6v, 12v, or 24v!
(on mobile, swipe to see all specs)

Model Price Battery Types Battery Voltages Size Main Tests Notifications Historical Data Export Data Location Finder Mileage, Fuel, Costs Data
BTR-1 $35.99 Lithium 12v 2.75" x 2" x 0.7" Voltage, Cranking, Charging Yes 31 Days No No No
BTR-2 $35.99 Lead/Acid 12v 2.75" x 2" x 0.7" Voltage, Cranking, Charging Yes 31 Days No No No
BTR-3 (NEW!) $49.99 Lithium, Lead/Acid 6v, 12v, 24v 3" x 1.5" x 0.5" Voltage, Cranking, Charging Yes 72 Days Yes Yes Yes

Proposition 65 Warning

WARNING: Cancer and Reproductive Harm –

Additional information
Weight 0.2 lbs
Dimensions 6.25 × 4.25 × 1 in
Product Weight

0.05 lbs

Product Size

3 x 1.5 x 0.5 in (mm: 78x38x14)

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