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Car Battery Tester 12V 24V 100-2000CCA Lead-Acid Battery, TOPDON BT300P Alternator Tester, Load Tester, with Built-in Printer, Spark Free Metal Clamps, Automatic Reverse Polarity Protection

  • Based on 767 reviews
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Wednesday, Mar 5
Order within 7 hours and 14 minutes
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Features

  • [12V Battery Tester] The BT300P is a quick and accurate battery tester that offers printed diagnostic receipts. Know everything about the health of 12V batteries, the 12V & 24V starter motors cranking status, and 12V & 24V vehicle electronic systems charging condition. This is TOPDONs newly developed battery tester that ensures your batteries are always working at an optimum level.
  • [Wider Application] This device works on a wide variety of 12V automotive lead-acid batteries, such as 100~2000CCA regular flooded, AGM flat plate, AGM spiral, Gel, and EFB. It detects the failure of the starting and charging systems in 12V & 24V cars, motorcycles, trucks, RVs, ATVs, SUVs, boats, yachts, and even lawnmowers. Most vehicle issues caused by a defective battery can be fixed with the BT 300P.
  • [Fast & Accurate Test Results] Featuring TOPDONs latest conductive battery testing technology, this modern battery tester can identify the exact reason why your battery failed in only 3 seconds. Research shows that its results provide an accuracy of 99.5% - more precise than competing battery testing equipment.
  • [User-Oriented Battery Load Tester] Its 2.4 color screen shows crystal-clear readings at any lighting condition. Intuitively placed buttons allow you to toggle menus with ease. With the built-in thermal printer, you wont have to worry about running out of ink. No ribbons, cartridges, or other supplies are needed for its use. Standard thermal paper is the only refillable supply required to print your test results.
  • [Extra-Safe Operation] With spark-free copper clamps, PVC-coated wiring, and built-in automatic protection against reverse polarity, the BT300P provides the extra safety you need when battery testing. Its insulated ABS shell prevents current leaks and can withstand damage. With an extra-long 31.5 cable, this car battery tester is even more convenient to use.

Brand: TOPDON


Power Source: Battery Powered


Style: For Car Truck Motorcycle ATV SUV Boat Yacht


Color: Black


Item Weight: 16 ounces


Brand: ‎TOPDON


Power Source: ‎Battery Powered


Style: ‎For Car Truck Motorcycle ATV SUV Boat Yacht


Color: ‎Black


Item Weight: ‎16 ounces


Min. Operating Voltage: ‎12 Volts (DC)


Specification Met: ‎Cca, Jis, En, Din, Sae, Iec


Measurement Type: ‎Voltmeter


UPC: ‎632111336411


Manufacturer: ‎TT TOPDON


Item Weight: ‎1 pounds


Package Dimensions: ‎11.34 x 9.25 x 2.36 inches


Item model number: ‎BT300P Battery Tester


Manufacturer Part Number: ‎BT300P


Voltage: ‎12 Volts


Date First Available: August 17, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Mar 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Excellent Tool
Pretty cool battery tester. It's fast, easy to use, a single press of a printer after reports. It's great and all but the printer can be a issue because it gets stuck underneath and it won't print all the way. It's best to pull the paper out a bit for a opening so it can print out easy. So yeah, best tool ever! ... show more
Reviewed in the United States on October 27, 2024 by Ramiro

  • Works great, but some poor workmanship
Tester works great most of the time. Has some flaws like occasional paper jam and says check clamps even tho they're on the battery post. Sadly less than 2 months of ownership and the wiring is separating from the positive clamp. Update i gor contacted by topdon and received a replacement for mine and its been working great for the past month ... show more
Reviewed in the United States on November 27, 2024 by Seth P. Seth P.

  • User friendly and handy.
It seems like it is really nice. I’ve used it one time and seemed user friendly. I didn’t think I needed the printer but I’m so glad I got one with a printer.
Reviewed in the United States on January 30, 2025 by Mark dodds

  • Great product, bad printing design
Great product, works as intended however the paper in the printer jams every time. Have not been able to print once where the paper comes out the way is supposed to.
Reviewed in the United States on August 7, 2024 by Bebe

  • Quick Easy Battery Tester
The battery tester is very easy to use and works well for a quick battery test. Confirmed what I thought that the batteries in my Super Duty were getting weak.
Reviewed in the United States on December 16, 2024 by JASON

  • Tool test
Great tool so far.
Reviewed in the United States on February 9, 2025 by George Graham

  • Easy to use.
I liked how easy it is to use and how it prompts you on what to test next. Seems accurate to me. Also like that you can print a report out. The printer did not jam and worked great.
Reviewed in the United States on October 27, 2024 by Dwade

  • It does not work correctly
Puse en descarga la bateria con las luces, hice la medición y el informe fué, bateria buena , di dos veces arranque, hice la medición y el informe fué, bateria buena, cargué la bateria con el auto durante media hora , apagué el auto y el informe fué , cambie la bateria. I discharged the battery with the lights, I did the measurement and the report was, battery good, I started the car twice, I did the measurement and the report was, battery good, I charged the battery with the car for half an hour, I turned off the car and The report was, change the battery. I did new tests, after turning off the car, after 4 hours and 4 hours 15 minutes, I did a test, as seen in Picture 4, in the image that says 4h, the voltage was 12.6 volts, at that time It said to replace the battery, in the image where it says 4 hours 15 minutes, it says that the battery is good, the only difference with the previous image is that the voltage is 12.59 volts and the charge is 98%. In Picture 5, you can see a similar behavior, the moment the voltage drops from 12.6 volts to 12.59 volts or less, the tester goes from showing that you should change the battery to saying that the battery is good. In summary, if the battery has 12.6 volts or more, for the BT300P tester, the battery is defective and must be changed. If the battery has less than 12.6 volts, for the BT300P tester, the battery is good, with equal values of measured peak and internal resistance. I attach two pictures. ... show more
Reviewed in the United States on January 19, 2024 by Adriana Iglesias Adriana Iglesias

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