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The VDIAGTOOL BT500 is a professional-grade car battery tester and system analyzer compatible with 6V, 12V, and 24V batteries including flooded, AGM, GEL, and EFB types. It offers precise diagnostics with 99.99% accuracy, testing battery health, charge, internal resistance, and cold cranking amps (CCA) from 5 to 3000. Beyond batteries, it evaluates starter and alternator performance to help avoid costly breakdowns. Designed with advanced safety features and a rugged, ergonomic build, the BT500 is ideal for vehicle owners and mechanics seeking reliable, comprehensive battery and charging system insights in a user-friendly package.
























| ASIN | B0DBLKZ3XF |
| Best Sellers Rank | #11,069 in Automotive ( See Top 100 in Automotive ) #19 in Battery Testers |
| Brand Name | VDIAGTOOL |
| Customer Reviews | 4.5 4.5 out of 5 stars (305) |
| Included Components | VDIAGTOOL BT500 car battery tester*1 |
| Manufacturer | VDIAGTOOL |
| Operating System | 6V Battery Test: Please select "Motorcycle Menu". Not suitable for deep-cycle battery |
| Power Source | Battery test, cranking test, charging test. No charging required, powered by test battery |
| Screen Size | 2.8 Inches |
J**2
A must have for any Person & Easy to use
The BT500 Car Battery Tester is an outstanding tool for anyone looking to stay on top of their vehicle’s battery health. One of the standout features is its wide compatibility it works on all 12V and 24V batteries, like regular flooded, AGM, GEL, and EFB batteries. It’s perfect for cars, trucks, SUVs, motorcycles, and more. No need to worry about whether your vehicle’s battery type is supported; as long as it’s not a lithium battery. The reliable performance of the BT500 is something you can count on. It provides detailed insights into your battery's health (State of Health), charge status (State of Charge), internal resistance, and cold cranking amps (CCA), giving you a complete overview of the battery’s condition. This level of detail helps you determine if it’s time to replace or recharge your battery. The starter and alternator tests are equally impressive. Just remember to turn off electrical devices like air conditioning, headlights, and radios during the charging test for optimal accuracy. The device also includes advanced safety features like reverse polarity protection, spark-proof functions, and over-voltage/temperature protection, so you can use it with confidence without worrying about mishaps. Overall, the BT500 is an essential, must-have tool for anyone who values the health of their vehicle’s battery and wants to avoid inconvenient breakdowns. Its combination of ease of use, comprehensive testing capabilities, and top-notch safety features make it an excellent investment for vehicle owners of all kinds
D**N
Tests batteries charging system and staters all with one tool
I bought this to check my batteries before winter. I can’t afford to replace a good battery and I don’t want to get stuck in the cold with a bad one. The BT500 comes neatly packaged. The manual has clearly worded instructions on how to use the BT500. The BY500 screen is large enough for all the information that will be displayed, bright enough to see in bright sunlight. Using the BT500 is as easy as selecting the test you want to run and following the on screen prompts. I tested my wife’s 5 year old battery and it was in great condition. While I had the BT500 connected I went ahead and tested her car's starter and charging system. Everything tested fine. I had been worried about this battery because of its age but it looks like it should be fine for this winter. It is nice to have a tool that is capable of running multiple types of tests. That feature in itself adds to the value of the BT500. The design is straightforward and easy to use. A USB cable comes with the BT500 so you can connect to your computer and print your test results if you wish. All in all this would be a great addition to your toolbox, because it has been for me. If I were to offer any suggestions for improving the BT500, the only thing I would suggest is to make the cables longer. Testing the charging system requires increasing engine RPM and maintaining a set level for the test. I was able to do this alone on my Versa with the battery close to the driver side firewall. The same test on my pickup requires two people, or jumper cables to extend the reach. Like I said just a suggestion to take care of an easy to work around inconvenience. All in all a good tool and definitely worth having.
J**T
Great DIY Battery Tester!
This is a great tool to have in your bag to quickly diagnose the state of your battery which I have used on multiples cars. Quality battery clamps with alligator teeth on one side for good grip and a good length cable. There is even a quick test button, one click to instantly get a reading on your battery. This is super handy to grab a quick state of health on your battery and the feature I use most of the time. The display is very bright and easy to read at most angles. In addition it has an LED indicator for a quick visual of Good (green), Charge (yellow), or Poor (red). In addition you can go into the vehicle mode to do additional tests such as Battery test, Cranking test, and Charging test. Just follow the steps on the screen and it easily walks you through the process. The Battery test will give you detailed information on the State of health as well as the State of charge. In addition it will show you current voltage as well as the cold cranking amps compared to the factory standard on your battery. The results are given as to whether the battery is good, good but needs charging, replace, bad cell, or charge retest. Glad I had this tool because it let me know that my truck battery is failing and says replace, which keeps me prepared! The Cranking test will show you detailed data when you crank the car following the prompt but mostly you are looking for Normal or Low for the result. The Charging test is a little hard depending on your battery placement since you have to rev the engine but I was able to do it by myself with one of my cars. I do not have a motor cycle so was not able to test that feature but I am sure it will be helpful to those where that is a part of their fleet. You can do both in vehicle and out is vehicle battery testing which is helpful. The waveform feature gives you a graph display of visual dips in the ignition and charging states as well as offering a quick button for this feature as well. Additional features that come with this device are system screen test and button test as well as a easy to read manual. Provides easy review of recent battery test and wave form data as well as printing the results if maybe you need to give it to a neighbor. Plus it gives you a usb port for updating the software on the unit for feature improvements. Great Tool to prevent you from not being aware of a failing battery and leaving yourself stranded. The is also a Great company with exceptional support and quick to get back to you if you have any issues or need help! Highly recommend!!
R**A
Good
P**T
Sehr übersichtlich, Funktionen selbsterklärend, deutsche Sprache einstellbar.
J**N
The unit is very well made but..... it says it tests 6-24VDC. It does not. 12/24 only. It will power on at 6 VDC but you cannot test 6VDC batteries. There are no test parameters.
D**S
Works good
N**Y
Je l'ai acheté pour m'est batteries a décharge profonde de camper power safe SBS 190F et il a pas la fonction que je voulais dessus me prend la fonction SBS ...Stationary batteries service
Trustpilot
1 week ago
1 week ago