10 Best

12 Volt Testers

of April 2024

  1. Product Highlights
    • ✅【battery health check】- applied with the latest testing algorithm, the tester will scan the battery and get the results in seconds, including the state of health, the state of charge, the internal resistance and the testing conclusion (poor, good, great). all types of 12v 100-2000cca lead acid batteries can be tested, including regular flooded, agm flat plate, agm spir...
    • ✅【real-time wave view & data print】- when you need to know more details about your battery or alternator performance when working, you may use the wave view function to monitor the real-time output curve. it gives you all the detailed changes view of the output. the testing results can be stored and reviewed on the screen directly. to print the data, just connect the ba...
    • ✅【warranty】- two year warranty and 100% satisfaction service - hassle-free return or refund for any product quality issue. 100% satisfaction service and technical assistance will be provided by contacting our professional customer service team.
    • ✅【a must tool in your garage】- with the up-to-date testing technology, it provides a quick reading to determine if a vehicle battery needs a jump or replacing and also the alternator output status. all you need to do is just connect and play. save your time and bucks.
    • ✅【cranking and charging system test】- test the alternator's starting voltage when cranking the engine to see if it's weak or in normal condition. check the alternator's continuous output when the engine is running so as to see if the alternator provides proper power to the battery and the electrical system. you can view all the testing details in graphs on the screen, i...
    • ✅【3" full color lcd screen & 9 language supported】- the 3" full color lcd screen (240*320 pixel) is eye-friendly and easy to read. provides you a more comfortable visual experience at every inspection. 9 languages supported - english, spanish, french, german, italian, russian, portuguese, chinese and polish.
  2. Product Highlights
    • 【0.8-100v wider testing range】upgraded technology allows for measuring a maximum voltage of 100v, outperforming the majority of auto electrical testers available on the market. widely and perfectly for examining different vehicles’ electrical circuits, such as automotive headlights, taillights, faulty sockets, and fuse connections, as well as other 0.8-100v dc wirings a...
    • 【quality made & user-friendly】our high-quality materials, unlike plastic test light bodies, are more secure to test. its size and sharp test light probe are just right for tight areas like under the dash and a protective cover is attached to the coiled wire so you can protect against damaging things when you're done with it.
    • 【smart mode】the professional automotive circuit tester defaults to smart mode. automatically senses between dc voltage, continuity and resistance testing without having to change any settings for the highest precision, making it easy to use.
    • 【buzzing & accurate led digital reading】buzzer sounds during continuity testing. 0.1v resolution ratio with high accuracy. the test light with voltage display features a bright green backlight led digital display that provides accurate volt readouts, clear and visible for day and night.
    • 【rest assured to buy】if durability is what you seek in a circuit testing tool, look no further. this digital test light comes with a nice little storage pouch to keep it in and a spare battery. and 3-year after-sales service and lifetime technical assistance are provided.
  3. Product Highlights
    • Updates for bt20 in 2023: the topdon bt20 car battery tester now comes with even more features since 2023, including measurements for cca, ah, gb, sae, bci, ca, en, iec, din, and mca. it also tests more battery types, such as norm, agm, efb, and gel, and displays battery and voltage statuses, soc and soh (the latter in percentage only). previous customers can update the...
    • Fast & accurate results: get battery life displayed in low/medium/high within 1 second by clicking the test button. the testing accuracy can reach 99.5%, thanks to the latest conductivity technology. the 12v load tester bt20 is ideal for users who want quick and reliable results. note that bluetooth is to be connected via the app, not phone settings.
    • Universal compatibility & multi-language support: ready to use with 12v lead-acid batteries found in a variety of vehicles, including boats, motorcycles, ships, and trucks. with 8 different language options, it's easy to use this device anywhere in the world.
    • Good news: our ios app (batterylab) has gone live again. ios users can search batterylab on apple app store to download the app and get access to the bluetooth features. android users search bt20 on google play as usual..
    • Budget-friendly: below $30, the topdon bt20 is a great value for a car battery tester. with four testing modes (battery load, voltage, cranking, and charging), and two app-exclusive modes (cranking and cranking tests), this tester works on 12v lead-acid batteries. note that the latter two test modes require an app.
    • Expanded testing abilities with app: the battery tester pairs with your device via bluetooth to access additional cranking and charging tests. the app displays real-time voltage waveform graphs with data playback functionality. note that bluetooth is to be connected via the app, not phone settings.additional cranking, charging, and voltage testing capabilities. easily v...
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