Updated: 19 Oct 2025

10 Best 12v battery monitor wifis of 2025

Updated: 19 Oct 2025

#1

Best Choice

Victron Energy SmartShunt 500 amp Battery Monitor (Bluetooth)

9.9

Victron Energy

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Main highlights

The SmartShunt is equipped with Bluetooth, a VE.Direct port and a connection that can be used for: monitoring a second battery, midpoint monitoring or a temperature sensor

The SmartShunt is an all in one 500 amp battery monitor. Your phone can be connected and acts as a display.

The SmartShunt connects via Bluetooth to the VictronConnect App on your phone/tablet and you can read out all monitored battery parameters - like state of charge, time to go, historical info and more
#2

Best Value

Renogy 500A Battery Monitor, High and Low Voltage Programmable Alarm, Voltage Range 10V-120V and up to 500A, Compatible with 12V Lithium Sealed, Gel, Flooded Batteries

9.8

Renogy

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Main highlights

【Protect the batteries】With High and low capacity alarm functions, our battery monitor with shunt will alarm, and backlight and voltage value will flash simultaneously to protect the batteries from getting over-discharged.

【Fit for all battery】Compatible with various battery types, including Lead Acid (AGM, GEL), Lithium Iron Phosphate, Lithium-ion, Nickel-metal hybrid.

【1% Accuracy Measurement】Shunt-type monitor design provides much more accurate real-time voltage and current draw measurement.
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#3

ANCEL BM200 Car Battery Monitor Bluetooth 12V Battery Tester for Lithium & Lead-Acid Batteries with Cranking Charging Test Alarm Record Voltage History for Car/RV/Motorcycle/Truck/Boat

9.7

ANCEL

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Main highlights

【Keep Your Journey Smooth】Ever lose your car in a crowded parking lot? Not anymore! From real-time battery monitoring and smart alerts to multi-vehicle management and location tracking, the BM200 isn't just a battery tester—it’s your all-in-one vehicle management companion. Perfect for drivers who want to avoid battery surprises and keep their vehicles running smoothly every day

【High Value Battery Tester】BM200 car battery tester is your go-to solution for 12V lead-acid and lithium battery testers. Equipped with advanced features like voltage & cranking & charging system test, abnormal alarm and real-time trip records.This battery monitor ensures your car battery is always in optimal condition. Whether it's for your car, motorcycle, truck, RV or boat, BM20012V battery tester has got you covered. Get it, and forget winter breakdown worries

【Cranking & Charging System】The cranking test helps you assess the battery's performance during vehicle startup, while the charging test lets you evaluate the operational efficiency between the battery, alternator, and electrical system——keeping your vehicle running smoothly without any surprises. With reliable accuracy, the BM200 car battery tester gives you the info you need to stay ahead, no matter the conditions
#4

WiFi Battery Monitor with Shunt, 10-100V 0-50A Bidirectional Detection Remote Monitoring Battery Monitor with 2.4 Inch Color LCD Screen

9.5

Jectse

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Main highlights

[Wide Battery Compatibility] Compatible with various types of batteries including VRLA, LFP, Li Ion, NI MH, and other battery types within the voltage range of 10 to 100V.

[Multiple Parameter Measurements] This battery monitor can measure voltage, current, power, charge discharge capacity, watt hour, time, and other physical parameters. Set parameters to enable functions such as overvoltage, undervoltage, overcurrent, overpower, overtemperature, and time limited protections.

[Built in Reminder] With a built in reminder, you can set low capacity or low voltage reminders. Once the values fall below the preset levels, the buzzer will sound immediately, accompanied by a pop up reminder, allowing you to stay informed of the device status.
#5

QUICKLYNKS BM2 Bluetooth Battery Monitor 12V Car Battery Tester for Lead Acid Battery, LowVolt Alarm for All 12 Volts Solar Power Systems/RVs/Motorcycles/Boats/Cars Compatible with iPhone Android

9.3

KDator

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Main highlights

Receive notification of battery conditions automatically when enter Bluetooth range.

It compatible with all 12-volt vehicle Lead acid batteries;Voltage: 9-16V With Bluetooth 4.0;

Free app for both iOS & Android, IOS: IOS 7.1 and Later Available: Android 4.3 and Later;
#6

Battery Monitor, 2.4 Inch HD Color LCD Battery Capacity Monitor, Bidirectional Detection Bluetooth Remote Monitoring Smart Shunt with 5m Communication Wire for RV, Car, Golf Cart

9.0

Cryfokt

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Main highlights

【Remote Monitoring】The battery monitor supports real time remote monitoring via WiFi, Bluetooth, and APP connectivity. Keep track of your battery status anytime, anywhere by staying connected to the battery monitor from your smartphone or other devices

【Multiple Parameter Measurements】This battery monitor can measure voltage, current, power, charge discharge capacity, watt hour, time, and other physical parameters. Set parameters to enable functions such as overvoltage, undervoltage, overcurrent, overpower, overtemperature, and time limited protections

【Enhanced User Interface】Bluetooth battery monitor featuring 2.4 inch HD color LCD screen with optimized interface, offering larger, clearer text. With dark and light mode options, ensuring easy visibility of information. The silicone key provides smoothly operations, fast response, and comfortable touch
#7

Car Battery Tester Bluetooth Car Battery Monitor 12V 4.0 BM2 Car Battery Tester

8.9

anmas rucci

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Main highlights

Free app for both iOS & Android, IOS: IOS 7.1 and Later Available: Android 4.3 and Later

Connect with battery directly, no code

Compatible with all 12-volt vehicle batteries;Voltage: 9-16V
#8

10-100V 100A Battery Monitor with Shunt, Bluetooth Auto Voltmeter Ammeter, Digital Current Voltage Power Energy Meter for Lithium & Lifepo4 Battery, RV, Motorcycle, Golf Cart

8.8

Generic

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Main highlights

【Product Introduction】This bluetooth battery monitor can monitor and detect the battery voltage, working current of the load circuit, and battery capacity.It allows for higher precision real time monitoring of battery percentage, power, voltage, current, remaining capacity, charges and discharge, estimated charges and discharge time, etc., you can easily control the battery situation.

【Easy Connectivity】Say goodbye to the traditional close range monitoring method, the shunt battery monitor supports remote real time monitoring function, support APP, , Bluetooth online. No matter where you are, as long as terminal devices such as mobile phones are connected to the coulomb meter, you can check the battery status anytime and anywhere.

【Built In Buzzer and Power Off Storage】The coulomb meter set low capacity or low voltage alarm, once the value is lower than the preset value, the buzzer will sound immediately, while the pop up window reminder, so that you can keep known of the device status, avoid accidents, so that safety is within arrival. We also provide 24 months of after sales service for it.
#9

MAEZOE Upgrade IPX7 Waterproof Battery Monitor, 12V 24V 36V 48V 60V 72V Digital Display Battery Capacity Tester with Buzzer Alarm and Temperature for Car, Golf Cart, RV, Boat

8.7

MAEZOE

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Main highlights

【Wide Application Compatibility】 – Suitable for testing battery voltage and capacity of various vehicles and devices, including electric motorcycles, motorcycles, golf carts, cars, boats, marine, RVs, and more.

【Supports Multiple Battery Types】 – Compatible with 7-100V batteries such as Ternary Lithium, Lead-Acid, AGM, and LiFePO4 batteries. Default setting supports 12V Lead-Acid batteries for versatile use.

【Reliable Protection & Durability】 – Features IPX7 waterproof rating, dustproof shell, reverse connection protection, and CE certification, ensuring safe and durable performance for indoor and outdoor use.
#10

Generic Battery Monitor with Shunt, 10-100V 0-50A Bluetooth Remote Monitoring Battery Tester with High and Low Voltage Reminder, for RV Solar Marine Car Truck Motorcycle, Gel

8.6

Generic

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Main highlights

[Wide Battery Compatibility] Compatible with various types of batteries including VRLA, LFP, Li Ion, NI MH, and other battery types within the voltage range of 10 to 100V.

[Remote Monitoring] The battery monitor supports real time remote monitoring via WiFi, Bluetooth, and APP connectivity. Keep track of your battery status anytime, anywhere by staying connected to the battery monitor from your smartphone or other devices.

[Built in Reminder] With a built in reminder, you can set low capacity or low voltage reminders. Once the values fall below the preset levels, the buzzer will sound immediately, accompanied by a pop up reminder, allowing you to stay informed of the device status.

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10 Best 12v battery monitor wifis of 2025

Victron Energy SmartShunt 500 amp Battery Monitor (Bluetooth)

9.9

Main highlights

Renogy 500A Battery Monitor, High and Low Voltage Programmable Alarm, Voltage Range 10V-120V and up to 500A, Compatible with 12V Lithium Sealed, Gel, Flooded Batteries

9.8

Main highlights

ANCEL BM200 Car Battery Monitor Bluetooth 12V Battery Tester for Lithium & Lead-Acid Batteries with Cranking Charging Test Alarm Record Voltage History for Car/RV/Motorcycle/Truck/Boat

9.7

Main highlights

WiFi Battery Monitor with Shunt, 10-100V 0-50A Bidirectional Detection Remote Monitoring Battery Monitor with 2.4 Inch Color LCD Screen

9.5

Main highlights

QUICKLYNKS BM2 Bluetooth Battery Monitor 12V Car Battery Tester for Lead Acid Battery, LowVolt Alarm for All 12 Volts Solar Power Systems/RVs/Motorcycles/Boats/Cars Compatible with iPhone Android

9.3

Main highlights

Battery Monitor, 2.4 Inch HD Color LCD Battery Capacity Monitor, Bidirectional Detection Bluetooth Remote Monitoring Smart Shunt with 5m Communication Wire for RV, Car, Golf Cart

9.0

Main highlights

Car Battery Tester Bluetooth Car Battery Monitor 12V 4.0 BM2 Car Battery Tester

8.9

Main highlights

10-100V 100A Battery Monitor with Shunt, Bluetooth Auto Voltmeter Ammeter, Digital Current Voltage Power Energy Meter for Lithium & Lifepo4 Battery, RV, Motorcycle, Golf Cart

8.8

Main highlights

MAEZOE Upgrade IPX7 Waterproof Battery Monitor, 12V 24V 36V 48V 60V 72V Digital Display Battery Capacity Tester with Buzzer Alarm and Temperature for Car, Golf Cart, RV, Boat

8.7

Main highlights

Generic Battery Monitor with Shunt, 10-100V 0-50A Bluetooth Remote Monitoring Battery Tester with High and Low Voltage Reminder, for RV Solar Marine Car Truck Motorcycle, Gel

8.6

Main highlights

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