Car Battery Testers and Their Advantages and Disadvantages

Published on: June 17, 2022
Written by Liam Jaxon / Fact-checked by David Rowan

As a smart person, you have to follow the high-quality manner to check out your battery condition. Using a battery tester is an easy way to justify the performance. Battery testing is not a tough job. Once tested you decide if your car battery is going to give up power. Plus, you determine whether or not you need to change the battery.  

car battery tester

By the way, finding out the car battery condition, you want to collect the highest quality tester. As a result, you have to conduct a thorough study to ensure the tester that you expect. But, don’t worry. 

We have already done depth research and accumulated the 7 best car battery testers. So, this article will provide you with vast helpful information about this matter. 

What is a Car Battery Tester?

A car battery tester is electronic equipment for testing the present condition of the battery including the overall charge. Some people think battery testers only test the remaining capacity, not the voltage. 

Each of the batteries has a direct current. A tester works to monitor the response of voltage and load. And, identify how much power is left in the car battery. It is extremely simple to use and gets straightforward results within a short time. Testers are familiar with voltage meters. Not only in the car industry but a battery tester is also used for industrial maintenance, automotive, facility maintenance, electrical, etc.

Why Do You Need a Car Battery Tester?

The answer is very simple. Either routinely check the battery status or solve the accidental problem of your car. You know, car batteries can die after day-to-day use. 

Most of the batteries can stay for 3 to 5 years although it depends on your maintenance process as well as using the system. Due to overheating or old battery construction, your battery can be boiling

Adequate quality batteries last much longer and come with a better working principle. Check out the battery working principle article to know more about it. 

So, the car battery tester is useful to check the overall condition of your car. This is because you can replace the battery before it dies and isn’t able to hold a charge.

Top Reviews of the Best Car Battery Tester 

Now, we are ready to deliver you top-quality products after a long time of research. These 7 different battery testers are available for use for multiple purposes. So, go through the details of all car battery testers. 

1. KONNWEI KW208 12V Car Battery Tester: Perfect for Cost-Effective Battery

[amazon fields=”B08MPXGSGN” value=”thumb” image_size=”large” image_align=”center” image_alt=”KONNWEI KW208 12V Car Battery Tester”]

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Battery Types Regular flooded, AGM flat plate, AGM spiral, and gel batteries
Battery Capacity & Voltage 100 to 2000 CCA and 12 volts 
Standards CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, and SAE
Display LCD 
Style Digital 
Internal Battery No 

Provide an overall analysis of your battery’s health status before going to dies, the KONNWEI KW208 12V car battery tester is our first place. If you have a short budget, you can try it easily. 

The unique thing about the tester is that it is affordable and user-friendly. It is perfect for testing all 12V 100-2000CCA batteries such as regular flooded, AGM flat plate, AGM spiral, or gel batteries. 

Using this tester, car battery owners can test not only the battery but also the alternator & starter tests. Possible to understand every important thing like the voltage, charge status, internal resistance, cold cranking amp and AH capacity, and battery health. It shows the more precise testing report with ease. 

Why We Like

  • Provides 99.5% accuracy testing results;
  • Versatile and convenient;
  • No need for any internal batteries;
  • Able to test in-vehicle and out-of-vehicle load. 

Why We Dislike

  • Test only 12V battery;
  • May not be able to test lithium batteries. 

2. DROK 10-100V Digital Battery Tester: Easy-to-Install Tester 

[amazon fields=”B07759SLYP” value=”thumb” image_size=”large” image_align=”center” image_alt=”DROK 10-100V Digital Battery Tester”]

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Battery Voltage 10-100V (12v 24v 36v 48v 60v 72v 96v)
Physical Dimensions (LxWxH) 2.42 x 1.31 x 0.53 inches
Suitable for Car, marine, RV, boat, etc 
Display LCD color screen 
Item Weight 1.44 ounces
Battery TypesLithium battery, lead-acid battery, lithium iron phosphate battery, Ni MH battery. Default 12-volt lead-acid battery.

There is no way to avoid the two exceptional things- multi-functional options & on/off switch of the DROK 10-100V Digital Battery Capacity Tester. Works great for displaying the battery capacity, voltage, Celsius temperature, and more. The on/off switch is helpful to turn off the meter quickly and safely. 

Another standpoint is its design. Comes with a standard back cover to protect against damage. Plus, a protective shell, dustproof waterproof surface, and input reverse connection protection are beneficial. 

It is used for 12V 24V 36V 48V 60V 72V and 96V lithium batteries, lead-acid batteries, lithium iron phosphate batteries, and Ni MH batteries. Plus, even though the default 12-volt lead-acid battery. So, this tester is versatile and lightweight. 

Why We Like 

  • Features dust proof & waterproof surface;
  • Suitable for checking a wide variety of batteries;
  • It provides an alarm for low-voltage situations;
  • Quick and easy to use for multi-purpose;
  • Gives accurate voltage readings. 

Why We Dislike 

  • It is a bit difficult to save & navigate the programming;
  • Less waterproof. 

3. Schumacher BT-100 Battery Load Tester and Voltmeter

[amazon fields=”B000AMBOI0″ value=”thumb” image_size=”large” image_align=”center” image_alt=”Schumacher BT-100 Battery Load Tester”]

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Physical Dimensions (LxWxH)3.5 x 6.75 x 15.12 inches
Weight2 Pounds 
Color Analog / BT-100
Battery Capacity Up to 1000 CCA 
Battery Voltage 6V and 12V 
Ideal ForCars, small trucks, RVs, motorcycles, ATVs, boats, and lawn tractor batteries

This is another fantastic battery tester that works well for all marine batteries. The most important feature, it is easy to use. Warning for first-time users! It can deliver some accidental smoke. Feel worried about this? Oh, no it is not a problem. 

Using this fancy digital battery tester,  you can get accurate readings within a short time. It contains a lightweight unit and significant cables and clamps although the cables are a little short. The tester can be heated if you provide an extra load. The better way is to subtract a portable board that helps to reduce heat. 

However, the Schumacher battery load tester and voltmeter are suitable for 100 Amp batteries. This battery can be 6 volts or 12 volts depending on your choice.

Why We Like

  • Steel case with baked-on enamel finish makes it more durable;
  • Able to protect against overheating;
  • Easy-to-read;
  • Accurate results;
  • Lightweight.

Why We Dislike 

  • Pricey;
  • Not accurate readings;
  • A little bit weighty. 

4. Cartman 12V Car Battery Alternator Tester (Lightest)

[amazon fields=”B00EXIEVO6″ value=”thumb” image_size=”large” image_align=”center” image_alt=”Cartman 12V Car Battery Alternator Tester”]

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Suitable for 12V Car Batteries 
Weight 0.1 Pounds 
Physical Dimensions (LxWxH8)8 x 2 x 1 inch
Model Number TL120207 
Display LED 

Imagine if your car stopped suddenly and the car was completely dead. You thought it was a serious problem. But, maybe not! Just using this Cartman 12V Car Battery Alternator Tester to find out the problem. How? You have to hook it up to the battery. If you get zero reading, the battery is dead and in a non-rechargeable position. Then you only need to replace the battery.

The most remarkable feature is its compact design. Only weighs 0.1 pounds but it does precisely what it requires to do. This device is capable of testing out the strength of your battery and alternator. 

The only shortcomings of the Cartman Car Battery Alternator Tester are the too-small size of the clamps. You can add screws to solve the problem. Overall, this LED display battery tester is a great option to check the battery state, alternator state, and more. When shown the green light, the battery is fully charged. 

Why We Like 

  • Super light in weight.
  • Easy to understand the battery conditions & alternator charging;
  • Includes LED display to indicate accurate readings.

Why We Dislike 

  • Only good for a 12-volt car battery;
  • Too small;
  • Pricey. 

5. MOTO POWER MP0514A 12V Digital Car Battery Tester 

[amazon fields=”B01DYE581Y” value=”thumb” image_size=”large” image_align=”center” image_alt=”MOTO POWER 12V Digital Car Battery Tester”]

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Style Digital 
Weight 150 grams 
Color Black Version 
Warranty 2 years 
Display & Indication LCD & LED 

Believe it or not, this product comes with a great warranty along with 30 days of money back as well as 24/7 friendly customer service. It’s a vast opportunity to invest money with confidence. For this reason, the MOTO POWER MP0514A 12V Digital Car Battery Tester is our 5th selected product. 

The outstanding feature of the tester is the 4-digit LCD and 8 colors LED indication. Display works for providing accurate readings. Plus, various color indications provide the alternator or battery status. Another standpoint is the design of the product. This comes with a rubber paint surface for a relaxing hand feeling.

Why We Like 

  • Easy to read the output status of the battery and alternator;
  • Includes LED indication and LCD digital screen;
  • Lightweight and compact design;
  • Offers 30Amp alligator clamps. 

Why We Dislike 

  • The clamps are a little small;
  • Not 100% accurate readings. 

6. TOPDON BT100 Car Battery Tester 

[amazon fields=”B07Z67MMGC” value=”thumb” image_size=”large” image_align=”center” image_alt=”TOPDON BT100 Car Battery Tester”]

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Battery Type Car/ trucks/ boats
Color BT100
Weight0.56 Pounds 
Physical Dimensions (LxWxH)5.3 x 3 x 1 inch 
Battery Capacity 100-2000 CCA 

Are you looking for the overall best car battery tester? The TOPDON BT100 Car Battery Tester can be a vast opportunity to check the cranking and charging system, load and alternator status within a short time.

The special thing is its smart design with three LED indicators used to present the actual condition of the battery. Is the battery good, or bad, or need to recharge? Everything! 

Whether you desire to test the motorcycle, trucks, cars, or golf carts, it is suitable for all users. You can’t avoid the super-accurate readings of the 12V regular-flooded to deep-cycle batteries. 

Why We Like 

  • Works well with a wide range of 100 to 2000 CCA batteries;
  • Great customer service;
  • Worth in price;
  • Perfect for your 12V lead-acid battery.

Why We Dislike

  • A few customers note that this battery tester is not as permanent as the manufacturer says.

7. FOXWELL BT705 12V 24V Car Battery Tester

[amazon fields=”B01ANF1D7U” value=”thumb” image_size=”large” image_align=”center” image_alt=”FOXWELL BT705 12V 24V Car Battery Tester”]

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Battery Capacity 100-2000 CCA 
Style Digital 
Color BT705 
Size (LxWxH)13 x 3.2 x 9.1 inches
Battery Voltage 12V or 24V

Don’t guess that the last product is of poor quality. It has a lot of benefits when compared to the previous products. Yes, the FOXWELL BT705 12V/24V Car Battery Tester is suitable for batteries that have 100 to 2000 CCA capacity. 

That means you can check out the regular flooded, AGM spiral, AGM flat plate, deep cycle, and GEL batteries with ease. And, the result is reliable and accurate. 

Thanks for its extra-safe protection. It is made from the highest quality safety copper clip. This supports protecting the invalidate polarity and spark function. The find out the problem, this battery tester provides you with a safe and secure connection to the alternator or battery.

Why We Like 

  • Allows you to test 12V and 24V charging and cranking systems;
  • Within 3 seconds it provides accurate test results;
  • Safe for learners to professional-grade users;
  • Includes 7.8ft tester cable with metal alligator clips;
  • Super easy to utilize. 

Why We Dislike 

  • Not worth the price;
  • Test results are not always reliable.

How Can I Test My Car Battery? 

We have already confirmed some best models of the car battery tester. So, the question is how to check the battery by using a tester. Well, manufacturers offer comprehensive instructions on how to use & maintain the devices. We try to accumulate some basic principles for checking the car’s battery condition. 

First, you have to wear a pair of safety hand gloves and goggles to work safely. These are helpful to protect your eyes and hands from acid. 

Second, ensure that the car’s engine is off and the lights are turned off. It is essential to stop the danger. 

Third, after turning off all connections, you need to attach the positive lead on the tester to the positive terminal on the battery. Alternatively, ensure the connections of the negative lead on the tester to the negative terminal on the battery.

Then, it is fundamental to check the car battery voltage. When you see the voltage reading is up to 12.6 volts, your battery has no problem and stays at its best position. Are 12.4 volts ok for a car battery? 

Of course, the reading around 12.4 volts indicates your battery is good approx 75%.

A voltage rate of 12.2 volts is lower voltage and the battery is bad like 50% capacity.

Finally, you have to discard the negative terminal after checking your battery. 

What Types of Car Batteries Can Be Tested With a Car Battery Tester?

Most car battery testers are capable of testing lead-acid batteries, which are the most common type of car battery. Some testers are also able to test other types of batteries, such as lithium-ion batteries, which are becoming increasingly popular in modern vehicles.

Frequently Asked Questions 

Are Car Battery Testers Accurate?

Some trusted brands provide you with high-quality testers that are 100% accurate readings. If the result is between 80 and 100 %, your battery will perform great. 

Are Truck Bed Tool Boxes and Car Battery Testers Essential Tools for Vehicle Maintenance?

Yes, truck bed tool boxes are essential for vehicle maintenance. They provide organized storage for tools and equipment, making it easy to access what you need for repairs or maintenance. Additionally, car battery testers are crucial for diagnosing battery health and preventing unexpected breakdowns.

What is the Most Accurate and Reliable Way to Test the Health of a Car Battery?

The most accurate and reliable way to test the health of a car battery is to use a digital multimeter. This device can measure the voltage and current output of the battery, allowing you to determine if it is working correctly. The multimeter also allows you to test the battery’s ability to hold a charge, which can indicate potential issues with the battery. If the battery is not working as expected, it may need to be replaced.

How Can You Tell If Your Car Battery is Going bad? 

The 4 important signs of your car battery that indicate your car battery is going bad. They are:

  • If the headlights are going to be dim, it indicates that the battery is weak.
  • You get a sound while turning the key.
  • Backfiring.
  • Slow crank, etc.


So, deciding what is the best battery tester is now an easy process although it depends on your requirements. If you expect to get the overall great quality product, you turn on the TOPDON BT100 Car Battery Tester. On the other hand, you collect the best portable Cartman 12V Car 

Battery Alternator Tester within a short budget. Ultimately, the above 7 best car battery testers are qualified to be in all sectors. 

Don’t panic, just enjoy your car adventure! 

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About This Writer

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Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

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