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 DoctorKnow Your Battery for Safe Journey HomeBattery 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. TOPDON BT100 Car Battery Tester 12V Load Tester TOPDON BT200 Car Battery Tester 12V 24V Load Tester TOPDON AB101 Car Battery Tester TOPDON BT600 Car Battery Tester 12V TOPDON BT300P Car Battery Tester TOPDON BT20 Battery Load Tester Buying Options Buying Options Add to Cart Buying Options Add to Cart Add to Cart Customer Reviews 4.6 out of 5 stars 4,254 4.6 out of 5 stars 1,455 4.6 out of 5 stars 2,332 4.6 out of 5 stars 508 4.5 out of 5 stars 782 4.4 out of 5 stars 1,488 Price $47.19$47.19 $69.59$69.59 $26.99$26.99 $139.99$139.99 $99.99$99.99 $28.99$28.99 Testing range（CCA） 100-2000CCA 100-2000CCA 100-2000CCA 100-2000CCA 100-2000CCA 100-2000CCA Testing voltage 12V 12V/24V 12V 12V/24V 12V/24V 12V Built-in printer no data no data no data ✓ ✓ no data Compatibility Flooded/AGM/Gel/EFB/VRLA Flooded/AGM/Gel/EFB/VRLA Flooded/AGM/Gel/EFB/VRLA Flooded/AGM/Gel/EFB/VRLA Flooded/AGM/Gel/EFB/VRLA Flooded/AGM/Gel/EFB/VRLA Cranking test ✓ ✓ ✓ ✓ ✓ ✓ Charging test ✓ ✓ ✓ ✓ ✓ ✓ LCD display 2'' Backlit 2.4'' Color 2'' Backlit 3.5'' Color 2.4'' Color 1.2'' Backlit