What drives you to install a battery monitor in your car? Is it a fear of your car dying in the middle of nowhere, even if you religiously turn off the lights and close the windows? Maybe it’s a nagging worry over how much gas is left in the tank, even though you religiously gauge your mileage.
Or maybe it’s the guilt of leaving your car lights on, even when you’ve parked in your garage? Whatever the reason, installing a battery monitor can help allay your fears, especially if you’re conscientious about following all the steps to lengthen your car battery’s lifespan. But there’s a slew of options out there, and it can be hard to know which one to buy.
To help you find the best bluetooth car battery monitor for you, we’ve considered a variety of factors, from the convenience of having a portable unit to the price point to the different features. Keep reading to learn more about our top picks.
Top 10 Bluetooth Car Battery Monitor
Our Editor’s Best Bluetooth Car Battery Monitor Reviews
QUICK LINKS Auto Battery Monitor BM2 Bluetooth 4.0 12V Device Car Battery Tester

Key Features:
- This monitor is designed to work with all 12-volt vehicle batteries. It has a voltage range of 9-16V and is compatible with solar power systems, RVs, motorcycles, boats, cars, and trucks.
- This is a Bluetooth car battery monitor that will alert you if your battery is low volt when you enter Bluetooth range in 10 meters.
- This device is a safe and reliable way to test the battery in your car. It will tell you the voltage, charge, and cranking power, as well as whether or not the engine is starting correctly.
- This is a car battery monitor that you can use with your iOS or Android device. It is available for free on both app stores and works with devices running iOS 7.1 or later, and Android 4.3 or later.
- This product is a bluetooth car battery monitor that is easy to operate. The app is Battery Monitor BM2. You can scan the machine backup or user manual scan code to download the software. By connecting Bluetooth and opening the app, with no code, you can know the battery or battery load’s Condition and check the charging and the starting system, and list the time of each driving.
Battery Monitor BM2 for Car RV 12V Battery/Antigravity Batteries with Bluetooth 4.0 Wireless Battery Sense Tester Battery Load Tester Compatible with iPhone Apple Android Phone Free App

Key Features:
- This is a bluetooth car battery monitor that is easy to install. You just need to connect it to the battery and it will give you a quick reading on the battery status. It will also tell you the status of the alternator output. The power consumption of the product is only 1.5mAh, which has little effect on the car battery. Note: Be sure to open the app first, and then connect the bluetooth in the app.
- This bluetooth car battery monitor will send the battery status to the phone notification bar when entering Bluetooth range, so the shopper can be reminded to check the battery.
- This is a bluetooth car battery monitor that is easy to operate. You can download the Battery Monitor BM2 app and connect it to your bluetooth. Once you have the app open, you can see the condition of your battery and charging system. You can also see a list of the times you have driven.
- This product is a bluetooth car battery monitor that tells you everything you need to know about your battery, including voltage, charge, cranking power, and engine starting. It is safe and reliable, and easy to use.
- This is a bluetooth car battery monitor that is compatible with all 12-volt vehicle batteries. It has a voltage of 9-16V and can connect with the battery directly. It is a free app for iOS and Android users.
LNEX Car Battery Tester, Wireless Bluetooth 5.0 RV Battery Monitor, 12V 24V Automotive Battery Load Tester with Charging & Cranking Test & Alarm for Solar Power Systems/Boats/Cars/Trucks

Key Features:
- The LNEX bluetooth car battery monitor is a device that communicates with your phone via bluetooth to send you notifications when you are approaching your car. It is designed to help you prevent vehicle breakdowns due to power outages. The device can transfer data faster and more stable than other similar devices and has a very low power consumption.
- This is a bluetooth car battery monitor that will protect you from making the wrong operation and will also let you know the battery level alarms.
- This Bluetooth car battery monitor is faster and more reliable than previous versions, making it perfect for anyone who needs to keep track of their car battery’s status.
- The LNEX 12V/24V battery tester can automatically monitor the battery and enable you to check the alternator’s charging and Starter’s cranking conditions with min voltage, cranking Time, and graphing voltages. voltage in high RPM, charging voltage ripple, and charging system status. Also, you can keep a driving log of driving time and duration for auto record and store up to 30 days of data.
- This bluetooth car battery monitor is a digital car battery tester that is compatible with all 12V/24V batteries, including regular flooded, AGM flat plate, AGM spiral, and GEL and EFB batteries for vehicles, forklifts, hybrid cars, SUVs, Pickups, Boats, RVs, Motorcycles, Travel Trailers, and even solar power systems.
Battery Monitor ANCEL BM300 Bluetooth Voltmeter, Automotive Battery Voltage Charging Cranking System Test with Alarm for All 12 Volts Solar Power Systems/RVs/Motorcycles/Boats/Cars/Trucks

Key Features:
- This is a bluetooth car battery monitor that can test the voltage, charging, cranking and trip recording on your car. It is designed for all 12V batteries and uses very little power from the battery.
- The ANCEL Battery Charge Monitor is a 12V digital battery tester that uses Bluetooth 4.0 to connect to a battery in milliseconds. The free app ANCEL Battery Charge Monitor 12V RV can be used to check the battery’s voltage readings in real-time and will notify the user when the battery is dropping.
- This battery monitor is versatile and can be used with all 12V batteries. This includes regular flooded, AGM flat plate, AGM spiral, and GEL batteries for vehicles, forklifts, hybrid cars, SUVs, Pickups, Boats, RVs, Motorcycles, Travel Trailers, and even Solar Power Systems.
- This is a bluetooth car battery monitor that is compact and convenient. It is an upgraded version of the Bluetooth voltmeter BM300 and is very compact. You don’t have to press any annoying buttons to check the data. You just need to fix it to your battery, go back to your seat, and check your phone. Please note that you should be within the range (33 feet).
- The bluetooth car battery monitor is a secure and reliable way to test your car battery. It is made of fireproof material and has reverse-polarity protection to keep you safe. The device will automatically monitor the vehicle’s battery, cranking, and charging systems, and can store up to 31 days of data.
- This bluetooth car battery monitor is for a shopper who wants to be able to monitor their car battery’s status via their phone. The phone will need to have the ANCEL BM300 APP downloaded in order to work.
Battery Monitor Battery Accessories for Car RV 12V Battery/Antigravity Batteries with Bluetooth 4.0 Wireless Battery Sense Tester Battery Load Tester Compatible with Free App

Key Features:
- This product is a bluetooth car battery monitor that is easy to install. You simply connect it to the battery and it will give you a quick reading on the status of the battery and whether it needs to be replaced. The various colored LED lights indicate the status of the battery or alternator.
- This is a bluetooth car battery monitor that will send the battery status to the phone notification bar when you enter the Bluetooth range. It also supports multi-device connection so that 4 devices can be monitored at the same time.
- This is a battery monitor that you can use with your car. It is easy to operate and you can use it to check the condition of your battery and charging system.
- This is a bluetooth car battery monitor that tells you everything about the battery, including voltage, charge, and cranking power. It also automatically detects the engine starting position and provides a car finder function through navigation.
- This is a bluetooth car battery monitor that is compatible with all 12-volt vehicle batteries. It has a voltage of 9-16V and connects with the battery directly. There is no code required and it is free for iOS & Android users.
Battery Monitor TOPDON Car Battery Tester 12V, Bluetooth Voltmeter Wireless Automotive Alternator Load Tester, Battery Analyzer Charging Cranking Tester for Car Truck Motorcycle ATV

Key Features:
- This is a car battery monitor that can be used to test the voltage, charging, cranking and trip recording on a 12V battery. It is designed to be used with very little power from the battery, so you can easily check the battery before you go out on the road.
- The Topdon BT Mobile Lite automotive battery tester is a bluetooth car battery monitor that works on 12-volt batteries with 100 to 2000 CCA, such as regular flooded, AGM flat plate, AGM spiral, GEL, and deep cycle batteries for vehicles, cars, motorcycles, trucks, RVs, ATVs, SUVs, boats, yachts, mowers, and even golf carts.
- This bluetooth car battery monitor will help the shopper test and analyze the battery, cranking, and charging system of their car. This will help them avoid damaging their battery due to overcharging or incomplete charging.
- This is a small and compact bluetooth car battery monitor that is accurate and fast. It is a great option for automobile workshops, garages, and DIY users who need to check batteries regularly.
- This is a bluetooth car battery monitor that is safe to use and will automatically monitor the vehicle’s battery, cranking, and charging systems. It is offered with reliable customer support on Facebook during weekdays.
Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester 12V Automotive Battery Load Tester, Automotive Charging and Cranking System Monitor Digital Battery Analyzer for Android & iOS

Key Features:
- This bluetooth car battery monitor is a device that allows you to monitor up to 4 12v batteries at the same time. The device comes with an app (BM2) that is free to download, and an app (BM3) that is not free to download.
- The bluetooth car battery monitor is a free app for both iOS and Android that allows you to monitor your car battery’s charge.
- This is a bluetooth car battery monitor that is compatible with all 12-volt vehicle batteries. It has a small compact design and uses fireproof and high-temperature-resistant material.
- This bluetooth car battery monitor will send the battery status to the phone notification bar when entering Bluetooth range.
- This is a bluetooth car battery monitor that tells you everything about the battery, including voltage, charge, cranking power, and engine starting.
Antigravity Battery Tracker Bluetooth Monitor System BTR-2 for 12V Lead/Acid Vehicle Batteries, Test Voltage Cranking Charging

Key Features:
- This is a bluetooth car battery monitor that works on all 12V LEAD/ACID batteries. It also has a Lithium version BTR-1.
- This bluetooth car battery monitor easily lets you keep track of your battery’s health and status through your phone via a free app.
- This bluetooth car battery monitor is designed to help shoppers monitor and analyze the voltage, starting performance, and charging system of their car battery.
- This car battery monitor is a great choice for anyone looking for a way to keep track of their car battery’s health. The device gives you real-time data as well as a history of up to 31 days, all displayed in an easy-to-read graph.
- This means that the product is very easy to install and that it will send you alerts when it is within range of your phone via Bluetooth. This is a handy tool to have if you want to monitor your car’s battery life and receive notifications when the battery is running low.
Battery Assistant, Automotive Battery Load Tester Diagnostic Analyzer Monitor, Battery Monitor with Bluetooth 4.0 Wireless 6~20V for Android & iOS

Key Features:
- This product is a bluetooth car battery monitor that is used to monitor the car battery, starting system, and charging system. It is installed on the battery and uses Bluetooth 4.0 to connect to the mobile phone in order to monitor the starting status and charging status of the battery in real-time.
- This is a bluetooth car battery monitor that is compatible with all 12-volt vehicle batteries. It has a voltage of 6-20V and can connect to the battery directly. There is no code required and the app is available for free on iOS and Android.
- This is a battery monitor that uses Bluetooth to send the battery status to your phone. The app will automatically sync when you enter the Bluetooth range, and the data will be stored on the battery monitor for up to 35 days.
- This is a Bluetooth car battery monitor that helps you keep track of your car battery levels. You simply screw in the device to the positive and negative poles of your car battery, and then the device will automatically connect to your phone via Bluetooth. The app will then help you keep track of your car battery levels, and you can release all permissions while running the app.
- This Bluetooth car battery monitor is compatible with Bluetooth 4.0 and is suitable for DIY users, battery service stations, garages/workshops, tool stores, and vehicles/battery manufacturers.
CAMWAY Battery Monitor 8-120V 0-500A Voltmeter Ammeter Voltage Current Meter Backlight Waterproof Auto Car Motor Boat Caravan RV Motorhome Golf Cart, etc

Key Features:
- This is a bluetooth car battery monitor that can test the state of charge (%), the remaining battery capacity (up to 999AH), charge and discharge current (A), and voltage (V). This information can help to more efficient use the battery, which can enhance battery life and reduce the risk of failure.
- This is a bluetooth car battery monitor that has a clear display of various parameters and a two-way detection and display function. When the current is less than 50ma, it will automatically enter sleep mode, but it will light up again when you press the button.
- The Battery Tester is a bluetooth car battery monitor that can test any kind of battery within 500A. It has a voltage range of 8-120V and can be used for Golf Cart RV mobile and portable equipment, e-bike, balance cars, and Vacuum Cleaners.
- This bluetooth car battery monitor is designed to automatically store the last testing data when the system shuts off.
- This bluetooth car battery monitor has a slightly-touch button that activates the backlight and switches the display of other parameters. It is designed for humanized use.
Bluetooth Car Battery Monitor FAQs
1. What is a bluetooth car battery monitor?
A Bluetooth car battery monitor is a device that plugs into your car’s cigarette lighter port and wirelessly transmits data about your car’s battery health to your smartphone.
2. How does a bluetooth car battery monitor work?
A Bluetooth car battery monitor typically plugs into the cigarette lighter port and wirelessly transmits data to a smartphone app. The app can then provide real-time information on the car’s battery status, as well as historical data.
3. What are the benefits of using a bluetooth car battery monitor?
A bluetooth car battery monitor can be used to help keep track of your car battery’s charge level and health. This can be helpful in ensuring that your car battery does not become discharged and helps you keep track of its overall health.
4. How do I choose the right bluetooth car battery monitor for my car?
There is no one-size-fits-all answer to this question, as the best bluetooth car battery monitor for your car will depend on your specific needs and preferences. However, there are a few things to keep in mind when choosing a bluetooth car battery monitor for your car. First, consider the type of car you have and the size of your battery. You’ll also want to think about how often you plan to use the monitor and what features you’re looking for.
5. How do I install a bluetooth car battery monitor in my car?
If you want to install a bluetooth car battery monitor in your car, you will need to purchase a bluetooth car battery monitor. Once you have the monitor, follow the instructions that come with the device.
Conclusion
There are many great bluetooth car battery monitors on the market. Our list of the best bluetooth car battery monitor will help you save time researching and choosing the best one for you.