

Product Description
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
- 12V&24VBattery 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 motor’s cranking status, and 12V & 24V vehicle electronic system’s charging condition. This is TOPDON’s 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 TOPDON’s 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 won’t 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.
TOPDON BT300P Your Reliable Battery Doctor
- Battery Testing Functions: Check the battery health, alternator’s charging, and starter’s cranking conditions with ease.
- Wide Battery Coverage: 100~2000CCA regular flooded, AGM flat plate, AGM spiral, Gel, and EFB; much wider compared to others on the market.
- Rating Systems: CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE, GB.
- Built-in Printer: Access the data in hard-copy form, for better analysis.
- Premium Quality Copper Clamps: All ABS plastic covered; spark-free.
- Built-in Protections: Automatically protects your battery from reverse polarity or short circuit.
- Multilingual Menu: Easy to switch into the language (Russian, Spanish, French, Italian, and German).
- Quick & Accurate: This reliable battery tester offers results in just 10 seconds.
- Small & Compact: A brilliant addition to the toolbox for automotive mechanics, 4S repair stores and battery manufactures.
Battery Health Test
Our digital battery testers can help you diagnose faults with direct test results: “GOOD, BAD, REPLACE, or RECHARGE”.
Simply connect the tester to check battery health condition: CCA value/rating, voltage, internal resistance, state of health (SOH), and state of charge (SOC).
- State of health (SoH) is a figure of merit of the condition of a battery (or a cell, or a battery pack), compared to its ideal conditions.
- State of charge (SoC) is the level of charge of an electric battery relative to its capacity, SoC is normally used when discussing the current state of a battery in use.
Cranking Test
Set this battery tester to cranking test mode and then start the vehicle.
The result will tell if your 12V & 24V electrical system can generate enough power to start the engine.
- Loaded Voltage means the voltage measured when turning on on-board electrical appliances, such as headlights.
- Unloaded Voltage means the voltage measured when turning off all the on-board electrical appliances.
Charging Test
Use this load tester to routinely check your 12V or 24V charging system of vehicle, to gauge alternator health and troubleshoot charging issues.
Fast & Accurate
No more lagging behind and false test results. This 12V battery tester runs super-fast and adopts cutting-edge conductance testing technology for 99.5% accuracy.
Shop-Quality Battery Tester
This car battery tester is a handy tool to ensure your batteries are always working at an optimum level. Worthy as an addition to the toolbox collection for automotive mechanics, 4S repair stores and battery manufactures.
Made to Last Long
This automotive load tester comes with a great carrying bag, which fits the unit itself quite well to provide extra protection against bumps or accidents, and is dust-proofing. It is also perfect to store in your glove box.
Package list:
- 1*BT300P;
- 1*Carrying Bag;
- 1*User Manual;
- 3*Printer Paper.
For a Better User Experience
This advanced battery tester will automatically turn on as soon as being connected, welcoming you with a bright and nicely pixelated 2.4” color screen. It will present quality test result that is quick to read in a dark garage, under the hood, or even under natural daylight.
More, the built-in printer is there when you feel the need to attach a printout to a work order. You can print the test result out directly, share it with your customers or keep the printing records for future reference.
- Paper Change
- Gently pull the TOPDON branded blue tab, this step releases the paper access panel.
- Put the new roll in.
- Cover the panel.
Never worry about running out of ink as it is the thermal printer.
**NOTE: the printer is ONLY available when the battery voltage is over 9.5V.
Super Safe to Operate
TOPDON is a brand that is synonymous with safe and advanced technology and this battery tester BT300P is no different. It can automatically monitor the battery activity to make the testing safer and more efficient due to the following built-in protections:
- Short-Circuit Protection - Protect the operators and the units against short circuit hazards; detect the faults and cut off the circuit immediately before the surge current reaches the maximum.
- Reverse Connection Protection - Protect your car’s electric system, if the positive battery clamp is accidentally connected to the negative battery terminal and vice versa.
- Spark Proof - The specially designed clamps are all high-quality ABS plastic covered. So when you’re connecting the connectors to the battery, you won’t worry about the leak of the battery acid which may cause a damaging explosion.
FAQ:
Q: Can BT300P test the battery installed in the vehicle?
A: Yes, it supports in-vehicle and out-of-vehicle testing.
Q: Is the test result accurate?
A: Yes. Our BT300P features advanced conductance detection giving you accurate test results in seconds.
Q: What batteries can BT300P work on?
A: It works on 12V regular flooded, AGM Flat plate, AGM Spiral, GEL and Deep Cycle batteries, with CCA between 100 to 2000.
Q: Is BT300P designed with any built-in protections?
A: Yes. It offers peace of mind with extra-safe Reverse Polarity and Spark-proof protection, and easy operations even if you’re new to battery testing.
Q: Can BT300P test 12V solar battery?
A: If your solar battery bank is made up of lead-acid cells, then yes.
Q: How do I confirm if my vehicle battery is bad or good?
A: The battery tester will display SOH (State of Health), SOC (State of Charge), CCA (Cold Cranking Ampere), Voltage, Internal Resistance, and Rating, with an intuitive test result of “GOOD” or “BAD” for your reference.If the internal resistance is too large, it indicates a broken battery.
Q: How do I confirm if my vehicle battery is bad or good?
A: The battery tester will display SOH (State of Health), SOC (State of Charge), CCA (Cold Cranking Ampere), Voltage, Internal Resistance, and Rating, with an intuitive test result of “GOOD” or “BAD” for your reference.If the internal resistance is too large, it indicates a brok