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Best Battery Monitors - Holiday Sale

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Last Updated - 19.12.2025

Best Choice

01

Victron Energy

Victron Smartshunt Bluetooth Battery Monitor without Display Battery Monitor VE.Direct

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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VICTRON ENERGY Battery monitor: Victron Energy SmartShunt shows the charge status of the battery in % and acts as a charge level indicator for your batteries
Installation: improper installation can be dangerous. Consult a professional and follow the electrical regulations during installation.
CONNECT VICTRON ENERGY GX: Victron Energy GX device with a VE.Direct cable to monitor a second battery, the centre of the bank or the temperature (additional parts may be required)
Bluetooth: Connect Victron Energy Shunt to your phone or tablet via Bluetooth and simply change the settings or monitor your batteries - save space by not using your own display
All-in-one battery monitor: Victron Energy Smartshunt is an excellent, easy-to-set all-in-one battery monitor. It records voltage, current, energy and remaining time and much more.

83,49 €
02

ANCEL

(Upgraded BM300) ANCEL BM300PRO 6V 12V 24V Car Battery Monitor - Bluetooth 5.3 Car Battery Monitoring with Charging, Start System Test & Alarm, IP67 Waterproof Battery Monitor for Truck Car Motorcycle

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【2025 latest car battery monitor】- ANCEL BM300Pro battery monitor monitors the condition of the battery, including voltage, start and charging system and driving data. It monitors abnormal battery conditions and takes appropriate measures to protect the battery. With a data retention of 72 days, you can compare changes before and after you take action for a better overview of the health of your battery.
Wide application: ANCEL BM300Pro Bluetooth battery monitoring is compatible with all 6V/12V/24V 100-2000CCA lead-acid batteries, including conventional flood, AGM flat plate, AGM spiral, gel and EFB batteries for cars, trucks, hybrid vehicles, off-road vehicles, boats, caravans, motorcycles and even solar systems. It can meet the requirements of different battery types.
Reliable safety measures: the built-in protection function against reverse polarity and short circuit ensures the safety of the user during operation. The fireproof ABS housing and IP67 waterproof rating increase durability. In addition to these safety features, it also has an exceptional alarm function.
Instructions for using the app: the product app is called "ANCEL BM300PRO" and can be found and downloaded from the App Store. To install the app, you must allow all access. (Allow access to your camera, microphone, pictures, etc.). You can install the app, the device does not reveal any personal data. If this installation requirement bothers you, please do not place an order to avoid a bad shopping experience. Thank you for your support.
Easy to use: install once and permanently attach to the battery without the hassle of re-installation. Access the health data of the battery directly from your phone and enjoy real-time monitoring by opening the app. In addition, the power consumption is as low as 1mA, almost negligible, making it a hassle-free stethoscope for your car battery.
Customer feedback questions: 1. Bluetooth connection problems: the effective Bluetooth connection range is 10 meters. However, if the device is installed in the vehicle and you are far away outside or there are obstacles such as walls, the Bluetooth signal may be affected.
99.6% accurate readings: this notifies you via the app if the battery has a malfunction, abnormal voltage or power, which reduces your concerns in this regard. Equipped with an intelligent chip for precise data measurements. The plug design features red and black rubber grips that make it easier to put on the battery poles and provide more accurate readings the longer you monitor.
5.3 Bluetooth connection: say goodbye to opening the bonnet to check the battery status. Whether in scorching heat, icy cold or even on rainy days, with the 3.2 oz battery monitor, you can monitor real-time battery data comfortably from the vehicle interior or from up to 15 metres away and intervene proactively. In addition, with the improved Bluetooth 5.3 Bluetooth you can recognise and connect even faster.
3. Notifications not timely Some phones limit background services, which affects the timeliness of notifications. Make sure you manually activate the necessary permissions to receive timely notifications. Otherwise, you need to open the app and connect the device to receive notifications. 4. Manual: At present, we only offer English paper manuals, but our app supports multiple languages. We also offer electronic multilingual manuals; if needed, contact us via Amazon for these manuals.
2. Imprecise measurement results/voltage does not match battery voltage: our devices capture real-time voltage data calibrated before delivery, with a deviation of ±0.03V. If discrepancies are found, you can check them with a multimeter. To ensure accurate voltage/SOC readings, select the correct battery type and application when adding the device. If inaccuracies remain, try using custom charge settings as different batteries have different calculation methods and different manufacturers specify different voltage charge values.

55,00 €
03

Renogy

Renogy Battery Monitor 500A 12V/24V/36/48V, High Precision Battery Monitor with Programmable Alarm for High/Low Voltage, Compatible with LiFPO4, AGM, Sealed, Gel, Wet Batteries for Motorhome, Boat

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Suitable for all batteries: compatible with different battery types, including lead-acid (AGM, GEL), Lifepo4, lithium-ion, nickel-metal hybrid
Renogy Battery monitor 500A 12V/24V/36/48V, high-precision battery monitor with programmable alarm for high/low voltage, compatible with LiFPO4, AGM, sealed, gel, wet batteries for motorhome, boat
Programmable alarm: The 12 V battery monitor is equipped with an alarm function for high and low capacity and supports custom battery parameters. Our battery monitor emits a flashing backlight alarm and voltage value to prevent over-discharge when the battery capacity is close to the preset threshold
Memory function: this 12 V 500 A battery monitor also offers a memory function and can record and restore data in the event of a power failure or shutdown
Easy to read: Displays multiple electronic parameters, including voltage, current, consumed power, battery capacity and battery deterioration rate with a high-resolution backlight display with custom brightness
Easy to install: the transparent shunt holder makes it easier to install the shunt. And the 20 foot long shielded cable allows you to monitor battery status remotely

53,99 €
04

DollaTek

DollaTek Battery Capacity Monitor 10-100V Programmable Battery Level Voltage Temperature Meter Gauge 12V 24V 36V 48V LCD Display Percentage Indicator Tester Electric Quantity Detector

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Protection: the capacity voltage tester panel is equipped with protective cover, dust-proof waterproof surface; input voltage reverse connection protection.
Easy installation and operation: the battery percentage display is only with 2 wires, red for the positive side of the battery, black for the negative side of the battery; 2 buttons for your operation, one button for voltage and temperature display, one for on/off.
Color LCD display: the battery monitor adopts LCD color screen, can display battery capacity, voltage, temperature (switched by key) long term, can be used in a variety of lighting conditions.
Application DollaTek battery capacity meter is suitable for 10-100V (12V 24V 36V 48V 60V 72V 96V) lithium battery, lead acid battery, lithium iron phosphate battery, Ni-MH battery, etc. You can quickly change the default parameters.
Alarm: the red indicator flashes and buzzer alarm, if it is low battery voltage, the low voltage can be adjusted. Please contact us. We will then send you electronic English instructions

8,99 €
Value for Money

05

Begonia

Begonia IP67 Waterproof Battery Monitor, Adjustable Battery Meter for 12V-84V Lithium, Lithium Iron, Lead Acid Batteries, Battery Indicator, Voltage Battery Capacity for Cars, Golf Carts, Motorcycles

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【Waterproof LCD Color Screen】: The battery indicator uses a digital acrylic LCD display with backlight and the waterproof level is IP67. On the screen, the battery voltage and remaining capacity can be displayed at the same time, so you can see the battery status in real time.
【Power Off Memory】: After turning off the battery capacity voltmeter, the function settings remain in the state before turning off, so no frequent adjustments are required and the use becomes more convenient.
【Low Power Consumption】: In normal mode, the internal power consumption of the battery monitor is less than 15mA and less than 1mA in power saving mode, which greatly reduces energy consumption and is suitable for various environments with limited power. The operating temperature range is between -20° and 80° and adapts to different climate conditions.
【Easy to Install】: The handlebar mounted battery monitor weighs only 50g, comes with a 45cm cable and a handlebar mounting nut and bracket, which can be easily and conveniently installed on the panel or handlebar.
Applicable batteries: ①Ternary lithium battery set of the L03-L20 series; ② iron lithium battery pack of the F03-F24 series; ③DC12 V, 24 V, 36 V, 48 V, 60 V, 72 V, 84 V lead-acid battery. Battery monitor also supports custom high and low voltage modes in the range DC7-100V to meet the battery monitoring requirements of different devices.

12,99 €
06

YOJOCK

USB C Tester Meter Voltmeter USB Multimeter Type C Current Meter Voltage and Current Tester 4-30V 0-6.5A PD QC USB Power Meter Capacity Voltage Tester Current Meter

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide Applicability: This USB-C tester measures voltage: 4V-30V; measuring current: 0-6.5A. YOJOCK testers are widely used in quality testing of digital 3C peripheral products and are the first choice for digital gamers and electronics enthusiasts.
Multifunction This USB tester is designed to detect voltage, current, capacity, electrical size, power, temperature, resistance, charging time and other data of the USB-C devices, which is convenient for testing the power supply and quality.
Measurement data is guaranteed: power-off memory function, which stores capacity and energy data when the mobile power is off, which is convenient for later display and capacity energy measurement of mobile current.
Detect Various Fast Charging Protocols The Type-C USB tester supports charging with QC2.0/3.0/4.0 and Super VOOC protocols, but the name of the fast charging protocol is not displayed on the USB tester.
Button function: 1. Click the button once to cycle the screens; 2. Double click the button to rotate the displayed content; 3. Press and hold the button (3 seconds): clear all capacities, electricity quantities and times.

9,97 €
07

DollaTek

DollaTek Battery Capacity Indicator Meter with Alarm and External Temperature Sensor -19~80°C 12V 12V 24V 36V 48V 60V 72V Display LCD Voltmeter Temperature Meter Tester for Li-ion Lifepo4 Lead Acid

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With an external temperature sensor and a built-in buzzer, this battery meter can trigger high/low voltage and over-temperature alarms.
The battery capacity and voltage meter can display battery capacity, voltage as well as Celsius and Fahrenheit temperature. It has a protective cover, dust and waterproof surface as well as protection against incorrect connection.
Programmable settings for different battery types, delay settings for ultra-low power consumption mode, adjustment of upper and lower limits of battery percentage, undervoltage and over-temperature alarms and voltage calibration.
Ideal for use in jet skis, golf carts, motorhomes, lawn mowers, aquariums and other equipment. Can also be used for DIY solar generators. If you have any questions, please feel free to contact us and help you solve any problems.
Compatible with 12V, 24V, 36V, 48V, 60V, 72V, 84V lead-acid batteries, lithium batteries, polymer lithium-ion batteries, 3-15 series lithium-ion batteries, batteries, water batteries, lithium iron phosphate batteries and more.

8,99 €
08

Victron Energy

Victron Energy Smart Battery Sense (Long Range up to 10 m) – Battery Voltage and Temperature Sensor, Suitable for MPPT Solar Charge Controllers

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Temperature sensor for Victron MPPT solar charge controller - optimise the output from your solar system by using the Smart Battery Sense as a temperature sensor for an MPPT charge controller that automatically adjusts the charging voltage to the temperature of the battery.
Range: 10 m.
Make your battery smart - you can display the values of the battery directly on your smartphone.
Easy to install - simply clamp the sensor to the pole of the battery and then stick it to the battery using the existing self-adhesive strip on the back.
Delivers battery values to your Victron smart network - the transmitted values can be used by several of your chargers.

35,96 €
09

Giantdeer

Giantdeer Voltmeter 12 V Car, 3 in 1 USB C Voltmeter Cigarette Lighter with Temperature/Digital Voltage Display, Battery Monitor PD & USB Car Charger, Digital Thermometer Car for 12 V/24 V Truck, Motorhome

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Voltmeter 12V car cigarette lighter, made of high quality ABS plastic, sturdy and durable. Suitable for 12V-24V cars, SUVs, trucks and buses. If you have any questions, please contact us. We will do our best to help.
Digital thermometer car: with probe cable, accurately measures the temperature in the car from -10~80°C. The voltage is displayed in red and temperature is shown in green, so you can check the condition of the vehicle battery.
Cigarette lighter plug, plug and play type voltmeter car charger with LCD display, digital voltmeter, voltage display colour: red. Convenient to check the vehicle voltage status.
Car thermometer with dual USB port for charging: USB-A + USB-C, can charge two devices at the same time, e.g. mobile phone and tablet. The USB port allows you to safely charge your devices on the go.
3 in 1 voltmeter cigarette lighter, 3 functions: charging via dual USB port/temperature measurement/battery voltage measurement.

12,99 €
10

ECO-WORTHY

ECO-WORTHY Upgraded Battery Monitor 300A 12V/24V/36V/48V, 3.5 Inch Touchable Display Battery Monitor with Alarm, 9-80V Li-Ion/LiFePO4/Gel Batteries, Battery Tester for Motorhomes, Solar Systems

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide application: the battery tester is suitable for 9-80 V golf carts, boats, caravans, motorhomes, solar batteries. Compatible with a variety of battery types, automatic testing including lead-acid batteries, lifepo4 batteries
EASY CONNECTION The ECO-WORTHY 300A battery guard uses Hall sensors, which makes wiring easier than shunts; No need to use screws to fix, just pass the cable through the Hall sensor
Data acquisition upgrade: ECO-WORTHY 300 A battery monitor can be connected to 2 Hall sensors to record battery input and output data separately and visualise the battery condition
Battery status display: first set the battery parameters and then fully charge the battery, the battery status will be displayed normally
Battery monitor: battery monitor beeps alarm when voltage, current, temperature is too high or too low; Supports custom battery parameters, can record and restore data in case of power failure or shutdown
3.5 inch screen: ECO-WORTHY 3.5 inch colour touch screen battery monitor with adjustable brightness and backlit display, self-power consumption of only 0.5 mA and programmable automatic sleep time

54,99 €