Updated: 04 Jul 2025

10 Best 12v battery monitors of 2025

Explore up to 18% Off

Updated: 04 Jul 2025

#1

Best Choice

Victron Energy SmartShunt 500 amp Battery Monitor (Bluetooth)

9.8

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

9.7

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

9.6

ANCEL

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Main highlights

【Enhanced Car Battery Tester】ANCEL BM200 Bluetooth battery monitor efficiently tests all 12V 100-2000CCA lead-acid and lithium batteries. Its feature set includes voltage detection, cranking system analysis, charging system evaluation, abnormal alerts, and real-time trip records. Additionally, it supports alternator and starter testing. Users can effortlessly track battery dynamics and get a comprehensive analysis of battery health, ensuring the car battery always stays in optimal condition.

【Effortless Battery Monitoring】Enjoy hassle-free battery monitoring with BM200's Bluetooth 4.2 technology. No need to stand by your car's hood—sit back in your car or within a 15-30FT range to access real-time battery information. Whether it's hot, cold, or rainy, you can conveniently monitor your battery's condition. Plus, the enhanced Bluetooth connection provides faster pairing and a stable, reliable connection.NOTE: Bluetooth connection may be affected by obstacles. For a stable connection, use in an open area

【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

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

9.5

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.
#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

Quicklynks Battery Monitor BM2 Wireless Car Battery Tester 12V Battery Load Tester Bluetooth 4.0 Digital Battery Analyzer Battery Voltage Charging and Cranking System Monitor for Android & iOS

9.2

Quicklynks

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Main highlights

Receive notification of battery conditions automatically when enter Bluetooth range.

It compatible with all 12-volt vehicle 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;
#7

Oricom BSM888X 12V/24V Battery Sense Monitor - Battery Sense App, Smartphone, 12/24 volt batteries, IP65 Ingress protection, Short-circuit and reverse polarity protection, Car

9.1

ORICOM

-18%

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Main highlights

Monitor up to 4 batteries

IP65 Ingress protection

Compatible with all 12/24 volt batteries

-18%
#8

Kivner 12V/24V/36V/48V/60V/72V Battery Monitor Tester - Voltage, Capacity, Temperature Display - Lead Acid, Lithium, LiFePO4 Batteries - Cars, Marine, RV

8.9

Kivner

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Main highlights

Wide Compatibility: Suitable for 12V to 72V lead-acid, lithium, lithium iron phosphate (LiFePO4), and nickel-metal hydride batteries.

User-Friendly Design: Easy installation with reverse connection protection, dustproof, and splash-proof features. Includes a protective shell for durability.

Multifunctional Display: Monitor battery capacity (%), voltage (V), and temperature (°C/°F) simultaneously on one screen for easy battery management.
#9

LCD Battery Meter, 12-84 V Battery Capacity Voltage Tester with Alarm, Battery Capacity Voltage Meter with Connection Cable for 12-84 V Battery Capacity Monitor (Blue

8.8

Bewinner

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Main highlights

[Display Mode] There are two display modes: battery symbol plus percentage or battery symbol plus voltage, 9-120V display range to meet your different needs, very intuitive.

[Custom Display] Universal version of the battery indicator, 4 display states are optional, support users to adjust the power percentage and alarm value functions themselves.

LCD display: The battery capacity monitor uses an LCD display for a clearer display, which allows you to quickly check that all batteries can be used within the display area.
#10

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

8.7

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

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10 Best 12v battery monitors of 2025

Victron Energy SmartShunt 500 amp Battery Monitor (Bluetooth)

9.8

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

9.7

Main highlights

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

9.6

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

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

Quicklynks Battery Monitor BM2 Wireless Car Battery Tester 12V Battery Load Tester Bluetooth 4.0 Digital Battery Analyzer Battery Voltage Charging and Cranking System Monitor for Android & iOS

9.2

Main highlights

Oricom BSM888X 12V/24V Battery Sense Monitor - Battery Sense App, Smartphone, 12/24 volt batteries, IP65 Ingress protection, Short-circuit and reverse polarity protection, Car

9.1

Main highlights

Kivner 12V/24V/36V/48V/60V/72V Battery Monitor Tester - Voltage, Capacity, Temperature Display - Lead Acid, Lithium, LiFePO4 Batteries - Cars, Marine, RV

8.9

Main highlights

LCD Battery Meter, 12-84 V Battery Capacity Voltage Tester with Alarm, Battery Capacity Voltage Meter with Connection Cable for 12-84 V Battery Capacity Monitor (Blue

8.8

Main highlights

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

8.7

Main highlights

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