TOPDON BT300P Car Battery Tester (12V/24V, 100–2000 CCA)

A dead battery can leave you stranded without warning, but the TOPDON BT300P Battery Tester helps you spot battery problems before they become expensive repairs. Designed for both professional technicians and DIY mechanics, this tester quickly evaluates battery health, starting performance, and charging system condition in just seconds.

The BT300P works with 12V and 24V lead-acid battery systems and supports Flooded, AGM, GEL, and EFB batteries with ratings from 100–2000 Cold Cranking Amps (CCA). Using advanced conductance testing technology, it provides accurate readings without placing a heavy load on the battery, making testing fast, safe, and reliable. It also features a built-in thermal printer, allowing you to print battery test reports for customers or keep records of your own vehicle maintenance.

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Key Features

• Tests 12V batteries and 12V/24V starting and charging systems.

• Compatible with Flooded, AGM, GEL, and EFB lead-acid batteries.

• Supports batteries rated from 100–2000 CCA.

• Performs battery, cranking, and charging system diagnostics.

• Displays battery voltage, State of Charge (SOC), State of Health (SOH), internal resistance, and actual CCA.

• Built-in thermal printer produces instant test reports with no ink cartridges required.

• Bright 2.4-inch color display with simple, step-by-step menus.

• Reverse polarity and spark-proof protection for safe operation.

• Works on cars, trucks, SUVs, motorcycles, ATVs, UTVs, RVs, boats, and many other 12V lead-acid applications.

Whether you're diagnosing a slow-cranking truck, checking the health of your ATV battery before hunting season, or verifying that your alternator is charging correctly, the TOPDON BT300P delivers professional-grade results in an easy-to-use package. Its portable design, fast testing speed, and printed reports make it an excellent addition to any home garage or professional repair shop.

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