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Choose the Battery Tester You Desire
TOPDON has been a leader in the automotive industry offering a wide range of battery testers, all of which have been hailed as reliable and innovative. This TOPDON BT300P showcases the same brilliant design and quality as other BT series testers:
- TOPDON BT100 is a basic 12V battery tester that’ll serve you well with necessary features and won’t be way above your budget.
- TOPDON BT200 is beyond just a basic battery tester, with more user-friendly features such as a color screen, etc., but still manages to fit into a compact and portable design.
- TOPDON BT300P is more engineered toward a mid-range budget, given that it has more features than BT200, combined with a thoughtful built-in printer.
TOPDON BT300P Your Reliable Battery Doctor
- Your Reliable Battery Doctor
- Know Your Battery for Safe Journey Home
- Battery Care: Fast & Accurate
Often you get stranded in the middle of nowhere with no mechanics nearby, all due to a bad battery, right? This car battery tester TOPDON BT300P is a cost-efficient method to test your battery, making sure it has enough juice to drive the car before you hit the road.
- 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. Print function only works on 12-16V cars.
- 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: Print function ONLY works on 12-16V cars. NO Bluetooth connects.
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.
Ramiro
2025-09-07 12:26:41
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!
Seth P.
2025-09-04 16:59:39
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
Mark dodds
2025-08-29 16:55:07
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.
Bebe
2025-08-27 16:53:57
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.
JASON
2025-08-04 16:03:46
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.
George Graham
2025-07-18 19:51:33
Great tool so far.
Dwade
2025-05-31 14:44:43
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.
Adriana Iglesias
2025-05-14 17:52:08
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.
SilkyVanillaBean
2025-03-13 18:09:57
Honest Review not endorsed! :I use it as my daily driver in my busy shop, works just fine, print out feature is awesome to!Comes with 3 rolls of papers!Great build quality aswellI will be buying more for the techs and possible other TopDon products
Tuned
2025-02-28 11:30:25
Love the print out, great to be able to test the battery, charging and starting systems.Easy to use
bogdan
2025-02-20 18:31:40
Excellent product. This unit is replacing a printer integrated Midtronics that i broke the cable and by the time i added shipping and cost it woukd have not been able to repair. This unit is much faster responding than Midtronics unit i used to use in my shop before. This tests battery, starter system and alternator all in one unit and provides a printout for my referance.I had attatched a picture of the alternator ripple test it performs in order to determine if it working or failed.Best part is this uniteven came with 3 printer rolls that yiu can get for any cash machine in the packageI am very happy and would recommend to anyone!
James
2025-02-02 13:58:17
I like the simplicity and I use this in the marine service industry.
Jordan
2025-01-07 21:52:08
Added to our shop on top of a midtronics unit, quick and accurate results, my only complaint would be the thermal rolls are very small and you cant use debit machine rolls without taking them down to half used size
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