Price: $32.99 - $28.99
(as of Apr 09, 2025 17:09:22 UTC – Details)
From brand
Topdon, your ideal car helper
How to connect Bluetooth?
Bluetooth is to be connected through the app, not the phone setting.
1. Install the BT20 app;
2. Find Bluetooth “BT20” on the app;
3. Connect and start using.
What to do in case of error message on screen?
ER1: Clamp is not firmly connected
ER2: Take off the clamp and connect again
ER3: Power Off and Related again
What is the maximum limit for Bluetooth connection?
Maximum. The range is 15 meters.
Good news, our iOS app has become live again. The name has been changed to batterlab. Please remember to search batterylab on the Apple App Store. Note: Android users also find batterlabs.
Fix smart, not hard
Diagnosis fast, repair fast
First things first: Cranking and charging tests are available only on the app. Both iOS users and Android users need to download the “Batterlab” app to get access to these two features. This examiner cannot test lithium battery, nor 6V/24V battery.
Budget-friendly: Below $ 20, Topdon Battery Tester BT20 is a great value for the car battery examiner. With four test mode (battery load, voltage test, two app-exclusive mode: cranking, and charging), this examiner works on a 12V lead-acid battery. Note that a latter two test mode requires an app.
Extended testing capacity with APP: Topdon BT20 battery load tester couples to reach additional cranks and charging tests via Bluetooth with their device. The app displays real-time voltage waveform graph with data playback functionality. Note that Bluetooth is to be connected through the app, not phone settings. See real -time voltage wave graphs with easily data playback functionality. Note: Bluetooth is to be connected through the app, not phone settings.
Fast and accurate results: Get battery life displayed in low/medium/high within 1 second by clicking the test button. Testing accuracy can reach 99.5%, thanks to the latest conductivity technique. Topdon BT20 battery examiner is ideal for users who want quick and reliable results. Note that Bluetooth is to be connected through the app, not phone settings.
Universal compatibility and multi-language support: 12V found in different types of vehicles are ready to be used with lead-acid batteries, including boats, motorcycles, ships and trucks. With 8 different language options, this device is easy to use anywhere in the world.
Ideal for car owners: Topdon BT20 12V battery analysts have security facilities such as reverse poleity and “no spark” protection and long clamps that lead to testing inside or from outside the vehicle. It is a perfect battery analyst and load tester for small repair shops and car owners. Makes a great gift for enthusiasts of the car.
Customers say
Customers find the battery tester works well, is simple to use, and offers comprehensive testing capabilities including cranking tests. They appreciate its build quality, with one customer noting the nice heavy-duty clamps, and consider it good value for money. The app functionality receives mixed reviews – while some find it helpful, others report issues with the app not existing. Battery life experiences are mixed, with some customers reporting their batteries struggling while others mention the device breaking after second use.
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