Updated: 25 Oct 2025

10 Best 12v battery monitor with shunts of 2025

Updated: 25 Oct 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

Victron Energy SmartShunt IP65 300 amp Battery Monitor (Bluetooth)

9.6

Victron Energy

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Main highlights

PRECISION SHUNT TECHNOLOGY: The SmartShunt uses highly accurate shunt technology to calculate everything you need and want to know, including Current State of Charge, Time Remaining, Voltage, Current, Amp Hours, Number of Charge Cycles, Deepest Discharge, Highest Voltage and Lowest Voltage.

DETAILED IN-APP INSIGHTS: Battery data is conveniently presented in the VictronConnect app on your smartphone. Instant readout enables you to see all important data at a glance, at any moment, without having to wait on Bluetooth pairing. Alarm notifications will inform you of any urgent matters.

ALL-IN-ONE WATERPROOF SMART BATTERY MONITOR: The Victron SmartShunt is a smart all-in-one battery monitor that provides detailed battery insights on your phone. It enables smart functionalities and optimized charging by wirelessly sharing live battery data with other devices in your system. It’s water and dust resistant and easy to (retro)fit into any system.
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#3

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

9.5

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.
#4

ATEM POWER 12V 500A Battery Monitor with Shunt Wire, LCD Display, Real-time Monitor Voltage Current Watt Compatible with Lithium, Lead-Acid, AGM, Gel Batteries, Flush Mount Available

9.4

ATEM POWER

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Universal Fitment: Our battery monitor with shunt is designed to monitor the performance of all common battery types, including lithium, lead-acid (AGM, gel, wet), and nickel-metal hydride. With this battery monitor, you can easily monitor the state of your deep-cycle battery in 4WD, RV, or boat solar systems. Our RV battery monitor improves your battery's overall performance and longevity.

Low Power Consumption: Our car battery monitor draws low standby power, helping you save power. This battery monitor with shunt is designed to automatically save settings when the system shuts off, making it an ideal choice for camper and RV owners. With this battery monitor, you can monitor your system's performance and keep your battery in excellent condition without using too much power.

1% Accuracy Measurement: Our shunt-type battery monitor is much more accurate than voltage-based battery monitors as it measures the actual energy flowing into and out of the battery through the battery shunt connected to the negative circuit. With the battery monitor with shunt, you can monitor real-time voltage, current draw, watts, charge level, and remaining time with an accuracy of 1%.
#5

Renogy 500A Battery Monitor with Shunt, High and Low Voltage Programmable Alarm, Range 10V-120V up to 500A, 20ft Shielded Cable, Compatible 12V Lithium Sealed, Gel, Flooded Batteries,Black

9.3

Renogy

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High precision Current detection; accurate Battery SOC%

High and low voltage programmable alarm - backlight and voltage value will flash Simultaneously

Data storage - designed to automatically store the last testing data when system shuts off
#6

Tavice DC Battery Monitor 300A Shunt with Wiring Tools for RV Car Solar System Durable

9.2

TAVICE

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Main highlights

[𝗗𝗨𝗥𝗔𝗕𝗟𝗘 𝗖𝗢𝗡𝗦𝗧𝗥𝗨𝗖𝗧𝗜𝗢𝗡] – Built with high-quality materials for long-lasting use, ensuring stable operation in demanding conditions such as RVs, cars, boats, and solar energy systems.

[𝗔𝗖𝗖𝗨𝗥𝗔𝗧𝗘 𝗘𝗡𝗘𝗥𝗚𝗬 𝗠𝗢𝗡𝗜𝗧𝗢𝗥𝗜𝗡𝗚] – Equipped with a 300A shunt, this DC battery monitor provides precise readings of voltage, current, power, and energy consumption, helping you track performance with confidence.

9 kinds of measurement functions - one interface simultaneously displays 9 kinds of measurement parameters, including voltage (0-200V), current (0-300A), power (0-60000W), impedance (0-1000Ω), internal resistance (0-999mΩ ), capacity (0-1000AH), SOC, energy consumption (0-9999kWh) and running time (0-999h)
#7

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

8.9

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
#8

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

8.8

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.
#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

Kings 500A Battery Monitor With Shunt | Lithium Compatible | Backlit LCD Display | 500A Shunt | Temperature Sensor

8.6

KINGS

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Main highlights

Lithium or AGM, 12V or 24V Compatible

Backlit LCD Display so you can check your battery capacity at a glance

500A Shunt and temperature sensor included

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10 Best 12v battery monitor with shunts of 2025

Victron Energy SmartShunt 500 amp Battery Monitor (Bluetooth)

9.8

Main highlights

Victron Energy SmartShunt IP65 300 amp Battery Monitor (Bluetooth)

9.6

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

9.5

Main highlights

ATEM POWER 12V 500A Battery Monitor with Shunt Wire, LCD Display, Real-time Monitor Voltage Current Watt Compatible with Lithium, Lead-Acid, AGM, Gel Batteries, Flush Mount Available

9.4

Main highlights

Renogy 500A Battery Monitor with Shunt, High and Low Voltage Programmable Alarm, Range 10V-120V up to 500A, 20ft Shielded Cable, Compatible 12V Lithium Sealed, Gel, Flooded Batteries,Black

9.3

Main highlights

Tavice DC Battery Monitor 300A Shunt with Wiring Tools for RV Car Solar System Durable

9.2

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

8.9

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

8.8

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

Kings 500A Battery Monitor With Shunt | Lithium Compatible | Backlit LCD Display | 500A Shunt | Temperature Sensor

8.6

Main highlights

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