The Best Car Battery Tester 2021

Car batteries are an essential component of any vehicle and it’s crucial that it functions to the best of its abilities. To ensure that this is the case, a car battery tester is highly recommend and within this article, we list some of the best.

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If you require a quick answer, the best car battery tester is the Topdon BT300P. It’s an easy to use device that clearly outputs tests results as a readable result on the digital display or on paper via the built-in thermal printer. However, if you are on a budget, the brand offer cheaper models that are just as highly rated and offer multiple test modes. Alternatively, if you wish to test the battery and alternator from your car’s 12V port, the Sealey AK500 is a great option to consider.

To rate the car battery testers within this article, we based our recommendations upon testing multiple devices, plenty of research and a number of factors. Some of the factors that we took into consideration included the display, ease of operation, compatibility with multiple batteries, testing functionality, warranty and value for money.

Car Battery Tester Comparison

Car Battery TesterConnectionDisplay
Topdon BT300PAlligator ClipsDigital
Topdon AB101Alligator ClipsDigital
Konnwei KW600Alligator ClipsDigital
Sealey AK50012V PortDigital
VIDENT iBT100Alligator ClipsDigital
MOTOPOWER MP0514AAlligator ClipsLED
AUTOOL BT-760Alligator ClipsDigital

Below is a list of the best battery testers that are easy to use and are designed specifically for car batteries.

The Best Battery Tester


1. Topdon BT300P Car Battery Tester

Topdon BT300P Car Battery Tester
Topdon are a brand that have been specialising in car battery testers for many years and the BT300P is their latest model. It features a new and improved design with a 2.4 inch colour screen and even a built-in thermal printer for printing out test results. Whether you need to test GEL, EFB, AGM (flat plate or spiral) or regular flooded batteries, this battery tester provide 99.5% accuracy in just 3 seconds.

Other features of the Topdon BT300P include:

  • Compatible with most 12V batteries
  • Provides battery, cranking and charging tests
  • High quality copper clamps
  • Insulated ABS shell construction
  • Reverse polarity and short circuit protection
  • 99.5% accurate test results in just 3 seconds
  • Supplied with printer paper and a carry bag

To conclude, the Topdon BT300P is the ultimate car battery tester that’s been designed and developed without compromise. Whether you are a professional mechanic or someone that owns multiple batteries, the BT300P is the best option. The only drawback is the premium price tag but considering its build quality and functions, it won’t disappoint.

2. Topdon ArtiBattery AB101

Topdon AB101 Car Battery Tester
By far the most popular and highly rated car battery tester on the market is another device by the reputable Topdon brand. It’s known as the AB101 model and it’s a mid-range option that provides easily readable test results and battery troubleshooting to help diagnose any issues.

Other features of the Topdon AB101 include:

  • Run multiple tests from one button
  • Cranking and charging tests
  • Supports multiple languages
  • Reverse polarity safety protection
  • Compatible with all 12V cars

Overall, the Topdon AB101 is the best battery tester that’s suitable for all 12V car batteries and ticks all the boxes. It isn’t the cheapest tester but the intuitive design and detailed results make it very easy to use. Although the BT300P model above offers extra functionality, the AB101 is cheaper and features the most used battery testing modes.
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3. Konnwei KW600 Automotive Battery Tester

Konnwei KW600 Automotive Battery Tester
Another popular car battery tester that’s at a similar price point is the Konnwei KW600. It’s compatible with all 12V batteries and provides a range of data that includes the voltage, internal resistance, CCA, AH capacity and much more.

Other features of the Konnwei KW600 include:

  • Large digital display
  • Simple four button operation
  • Built-in memory card for printing data
  • Supports 12 different languages
  • Charging and cranking tests
  • Voltage waveform analysis

The Konnwei brand offer a number of battery testers but the KW600 is by far the best model they produce. The large digital display along with the long list of available tests make it a great alternative to the Topdon option above.
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4. Sealey AK500 12V Battery Tester

Sealey AK500 12V Battery Tester
The Sealey AK500 is a unique car battery tester because it retrieves data via the car’s cigarette lighter as opposed to the battery itself. This makes it far easier to use in order to diagnose basic issues with the battery or alternator.

Other features of the Sealey AK500 include:

  • Two button operation
  • Connects via the cigarette lighter socket
  • Battery and alternator tests
  • Clear LCD display
  • 25 cm long power cable

If you require a simple to use and accurate device for carrying out tests on your battery or alternator, the Sealey AK500 is perfect. It’s also one of the cheapest testers that’s backed by a reputable brand for complete peace of mind.
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5. Vident iBT100 12V

VIDENT iBT100 12V Battery Tester
The Vident iBT100 is an affordable and versatile 6V and 12V battery tester that’s packed with the latest technology for detailed battery testing. In terms of its design, it comes with high quality metal alligator clips and it’s also housed within a rubberized sleeve for extra durability.

Other features of the Vident iBT100 include:

  • Covers 8 battery standards
  • Suitable for most car batteries
  • Test results in just 3 seconds
  • Automatic temperature compensation
  • Testing with or without the battery installed
  • Multiple language support

Overall, the Vident iBT100 is an excellent all-round battery tester that’s easy to use, built to a high standard and is also relatively affordable. Considering that it’s a model with a large digital display, you cannot go wrong for the price.

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6. MOTOPOWER MP0514A

MOTOPOWER MP0514A Car Battery Tester
One of the cheapest battery testers that’s actually worth buying and also comes with a two year warranty is the MOTOPOWER MP0514A. Although it doesn’t feature a large digital display, it has various LED’s that indicate the battery and alternator status.

Other features of the MOTOPOWER MP0514A include:

  • Fast and accurate test results
  • Result output via LED’s
  • Robust black rubber painted body
  • Reverse hook up and over voltage protection
  • Backed by a two year warranty

Overall, the MOTOPOWER MP0514A is the best budget battery tester that’s ideal for retrieving informative data from your car’s battery. The only drawback is the lack of a large digital display but this won’t be an issue for most people.

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7. AUTOOL BT-760 Battery Load Tester

AUTOOL BT-760 Battery Load Tester
By far the most expensive car battery tester that’s ideal for professionals is the AUTOOL BT-760. As with the Topdon BT300P, this particular model also has a built-in printer that prints out all of the battery’s statistics when required.

Other features of the AUTOOL BT-760 include:

  • Suitable for a range of battery types
  • 2.8 inch colour display
  • Built-in thermal printer
  • Variety of testing procedures
  • Supports 12 different languages

Although expensive, the AUTOOL BT-760 is an advanced battery tester that’s perfect for professionals or those that perform lots of tests on a variety of batteries. The addition of the built-in printer is also very unique and saves the time consuming task of writing everything down with a pen and paper.
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How We Tested & Rated

Although car battery testers are a niche product, they are very popular among those that own multiple car batteries. I for one is certainly someone that owns plenty and having a battery tester to hand allows me to keep track of their health. Therefore, we have plenty of experience to recommend the devices listed above and we are able to test them out to the full due to the fact that we have multiple batteries to hand in our garage.

During testing of the car battery testers, we tested them upon a number of batteries and used all their testing functions they had to offer. As well as our testing, we also based our recommendations upon hours of research and a number of factors. Some of the factors that we considered included the display, ease of operation, compatibility with multiple batteries, testing functionality, warranty and value for money.

Below is a video of us testing our top recommendation, which is of course the Topdon device.

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What we really liked about this car battery tester is the fact that it prints out the results at a click of a button. Although its more expensive that some of the alternatives, it’s certainly worth the added investment.

Conclusion

When it comes to a faulty battery, most people will often replace it straightaway with a brand new car battery. However, by performing a few tests upon the battery or alternator, you may be able to save yourself a small fortune if it turns out the battery isn’t at fault. All of our recommendations above are relatively affordable and are ideal for diagnosing issues with the car’s battery, alternator and other electrical faults.

author dan 4car

Written By Dan

Dan has been a car enthusiast ever since he can remember and has an extensive range of cars that include classic cars that he has restored himself from a barn find condition to modern performance cars. Whether you need advice on how to install car parts or recommendations on what products to buy, Dan’s first-hand experience will certainly help.

If you want to find out more about Dan, our testing process or the website itself, visit our about page for further information.

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