Updated: 08 Jul 2025

10 Best 12v battery monitor shunts of 2025

Explore up to 49% Off

Updated: 08 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 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

9.7

Renogy

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Main highlights

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
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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

9.6

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

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

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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Main highlights

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%.
#6

MNJ MOTOR DC 9 in 1 Battery Monitor Meter with Shunt, 0-200V 0-100A LCD Display Digital Current Voltage Power Energy Meter, Easy Installation Multimeter Voltmeter Ammeter for Cars RV Solar System

9.1

MNJ Motor

-49%

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Main highlights

【No Screw Installation】-- LCD display digital current multimeter adopts the installation design of the push-on terminal, it is easy and convenient to install and remove the wires without the screws.（Pls read the instructions carefully and strictly follow the wiring diagram before installation.）

【Better Visual Experience】-- LCD HD display, 360° viewing without dead angle, with backlight function, it is clearly visible whatever day or night. Through battery monitor meter, you can better monitor the real-time data of your battery and use it with more peace of mind.

【9 in 1 Battery Monitor Meter】-- 1 interface displays 9 kinds of measurement parameters at the same time, including Voltage(0-200V), Current(0-100A), Power(0-20000W), Impedance( 0-1000Ω), Internal Resistance(0-999mΩ), Capacity(0-1000AH), SOC, Energy Consumption(0-9999kWh) and Running Time(0-999h).

-49%
#7

Elqater DC Battery Monitor Power Meter Ammeter Digital DC 0-200V Shunt 100A Multimeter, Meter Voltmeter Capacity Tester

8.9

Elqater

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Main highlights

[Measuring area] voltage test area: DC 0-200V;Electricity test area: 0-100a;Discharge: 0-20000W;Discharge frame: 0-1000Ω;Interior resistance: 0-999mΩ;Capacity: 0-1000AH;Soc;Energy: 0-9999KWH;Duration: 0-999h.

[LCD accusation and backlight] LCD screen with blue film, 360 ° viewing angle, shows nine groups of measurement data at the same time.With the background lighting function it is clearly visible day and night, the LCD screen improves the visual experience, saves energy and electricity.

[9-in-1 multifunctional meter] It can be used to test the battery voltage, the discharge current, the discharge power, the discharge cap, the internal resistance, capacity, energy, energy consumption and the term.FCC and certification passed.
#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

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

8.7

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
#10

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

8.4

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

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10 Best 12v battery monitor shunts of 2025

Victron Energy SmartShunt 500 amp Battery Monitor (Bluetooth)

9.8

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

9.7

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

9.6

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

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

MNJ MOTOR DC 9 in 1 Battery Monitor Meter with Shunt, 0-200V 0-100A LCD Display Digital Current Voltage Power Energy Meter, Easy Installation Multimeter Voltmeter Ammeter for Cars RV Solar System

9.1

Main highlights

Elqater DC Battery Monitor Power Meter Ammeter Digital DC 0-200V Shunt 100A Multimeter, Meter Voltmeter Capacity 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

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

8.7

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

8.4

Main highlights

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