--- product_id: 358159358 title: "TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4\" Color Screen with Printer" brand: "topdon" price: "$214.97" currency: USD in_stock: true reviews_count: 13 category: "Topdon" url: https://www.desertcart.us/products/358159358-topdon-bt300p-a-car-battery-tester-12v-24v-2-4 store_origin: US region: United States of America --- # 12V/24V dual voltage support 2.4" vibrant color display Built-in thermal printer TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4" Color Screen with Printer **Brand:** topdon **Price:** $214.97 **Availability:** ✅ In Stock ## Summary > 🛠️ Diagnose Like a Pro, Drive with Confidence! ## Quick Answers - **What is this?** TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4" Color Screen with Printer by topdon - **How much does it cost?** $214.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/358159358-topdon-bt300p-a-car-battery-tester-12v-24v-2-4) ## Best For - topdon enthusiasts ## Why This Product - Trusted topdon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Centric Design:** Navigate effortlessly with a bright 2.4" color screen and intuitive controls, even in low light or under the hood. - • **Precision in Seconds:** Get ultra-fast, 99.5% accurate battery health and charging diagnostics in just 3 seconds—never get stranded again. - • **Smart Thermal Printing:** Instantly print professional-grade diagnostic reports without ink or ribbons—perfect for sharing or record-keeping. - • **Safety-First Engineering:** Advanced protections against short circuits, reverse polarity, and sparks keep you and your vehicle safe during every test. - • **Universal Battery Compatibility:** Seamlessly test all lead-acid types from regular flooded to AGM spiral and Gel, covering cars, trucks, boats, and more. ## Overview The TOPDON BT300P-A is a professional-grade car battery tester designed for 12V and 24V lead-acid batteries, featuring a crisp 2.4-inch color screen and a built-in thermal printer for instant, ink-free diagnostic reports. It delivers rapid, 99.5% accurate results in just seconds, supports a wide range of battery types, and includes advanced safety protections. Compact and user-friendly, it’s an essential tool for vehicle owners and automotive professionals who demand reliable battery health, charging system, and starter motor diagnostics on the go. ## Description Product Description Your Reliable Battery Doctor 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. Advanced Conductive Test: No need of a fully charged battery before the test. Built-in Printer : Access the data in hard-copy form, for better analysis. Premium Quality Copper Clamps: All ABS plastic covered; spark-free; help maintain a stable communication throughout the testing process. 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) that you are more comfortable with. 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. For a Better User Experience This advanced car 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. 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. TOPDON is a brand that is synonymous with safe and advanced technology and this 12V and 24V car 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 1. Short-Circuit Protection - Protect t he operators and the units against short circuit hazards; detect the faults and cut off the circuit immediately before the surge current reaches the maximum. 2. Reverse Connection Protection - Protect y our car’s electric system, if the positive battery clamp is accidentally connected to the negative battery terminal and vice versa. 3. Spark Proof - The speci ally 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. Battery Health Test Cranking Test Set this battery tester 12V 24V to cranking test mode and then start the vehicle. The tester will record the lowest voltage that the battery can maintain, and show the cranking time in milliseconds. The result will tell if your 12V & 24V electrical system can generate enough power to start the engine. Charging Test Use this battery load tester to routinely check your 12V or 24V charging system of vehicle, to gauge alternator health and troubleshoot charging issues. The result will tell if the generator provides sufficient juice to the vehicle's electrical system. Fast and Accurate Results 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. Menus and procedures follow the logical path for you to quickly take control of it, and get the data you need in seconds. Multiple Battery Types Suits all kinds of automotive lead-acid batteries, including regular flooded, AGM flat plate, AGM spiral, Gel, and EFB with a wide test range of 100~2000CCA. You can use this load tester virtually anywhere: cars, power sports, recreational vehicles, lawn and garden tractors, etc. 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. Review: Good, All in One Battery tester - The first impression of this tester is really good, it comes well packaged in a nicely designed box, which feels good quality and looks the part too. On opening, I found it’s all in a very nice zip case which is also very good quality, and a very nice touch. It looks good in my roll cab. The case holds the tester well and keep it organised, and as an added bonus, comes with some extra rolls of paper for the printer. To use, it’s pretty self explanatory if I’m honest, it’s easy to navigate the menus and doesn’t take much figuring out. Just clamp it on and go. I love the fact that it’s backlit, I’ve had testers in the past which aren’t and they can be difficult to read in bad light. Things I like: - Packaging and Presentation - The storage case/bag - Feels like a good quality item in your hand - Easy to use, and seems to deliver accurate results when compared with other testers and my multi-meter - Backlit display - Good quality clamps, though they could be better as I’ll explain below. Things I dislike: - Battery clamps could go a step further if they were more needle nose, I find it difficult to squeeze them onto some terminals. - Printer paper tears off a little short and often gets stuck and crumples inside the unit. A trivial con really, but can be irritating. Can be overcome if your careful how you tear it off, but could be better to avoid this if the lid had more of an internal guide. Summary: A nice unit to have and to use, I’ll have it for a long time. I find it to be accurate enough, and it all stores away nicely in its bag when not in use. I’d recommend it if you have need to tear more than the odd battery. When the weather gets better and I’ve used it some more, I’ll endeavour to do a video showing it’s use and features in more depth. Review: Battery diagnostics without the faff. - This is an excellent product and great value for money, battery diagnostics made easy. ## Features - PROFESSIONAL BATTERY TESTER WITH PRINTER: The BT300P is a must-have for any vehicle owner! This 12V & 24V car battery tester provides quick and accurate information about the health of your battery, as well as the charging condition and starter motor's cranking status. With its newly developed battery testing technology, you can rest assured that your batteries will always be at an optimum level. - WIDER APPLICATION: The BT300P is designed to work on a wide variety of 12V automotive lead-acid batteries, such as regular flooded, AGM flat plate, AGM spiral, Gel, and EFB. It also detects any potential starting or charging system issues in cars, motorcycles, trucks, RVs, ATVs, SUVs, boats, yachts, and even lawnmowers. - FAST & ACCURATE TEST RESULTS: With this modern car battery tester, you can identify the exact reason why your battery failed in just three seconds. Its results provide an accuracy of 99.5%. - USER-ORIENTED DESIGN: The 2.4-inch color screen of this battery load tester shows crystal-clear readings at all lighting conditions, and its intuitively placed buttons make it easy to navigate through menus. This user-oriented design creates a smooth experience and provides swift access to test results. - BUILT-IN THERMAL PRINTER: 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. The only refillable supply you'll need is standard thermal paper to print your diagnostic receipts. Experience peace of mind with the BT300P's smart printing capabilities. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09FK5MGP7 | | Best Sellers Rank | 1,348 in Automotive ( See Top 100 in Automotive ) 3 in Car Battery Testers | | Brand | TOPDON | | Colour | Black | | Compatible Devices | Vehicles that use 12V and 24V lead-acid batteries, such as cars, motorcycles, trucks, RVs, ATVs, SUVs, boats, yachts and even lawn mowers. | | Country Of Origin | China | | Customer Reviews | 4.4 out of 5 stars 145 Reviews | | Included Components | ➤1. TOPDON BT300P ➤2. User Manual ➤3. Carrying Bag ➤4. 3 Rolls of Printer Paper | | Item Dimensions | 20.8 x 10 x 3.8 centimetres | | Item Type Name | BT300P | | Item Weight | 0.48 Kilograms | | Item dimensions L x W x H | 20.8 x 10 x 3.8 centimetres | | Item weight | 0.48 Kilograms | | Manufacturer | TOPDON | | Manufacturer Part Number | 1 | | Maximum Operating Voltage | 30 Volts | | Measurement Type | Voltmeter or Ohmmeter or Ammeter | | Minimum Operating Voltage | 12 Volts | | Model Number | BT300P-UK-A | | Power Source | Battery Powered | | Power source | Battery Powered | | Product Warranty | 12-month guarantee | | Specification Met | CE, FCC, RoHS, UKCA | | Style | BT300P | | Style Name | BT300P | | UPC | 632111336312 810139304807 | | Unit Count | 1.0 count | | Upper Temperature Rating | 55 Degrees Celsius | ## Product Details - **Brand:** TOPDON - **Colour:** Black - **Item weight:** 0.48 Kilograms - **Power source:** Battery Powered - **Style:** BT300P ## Images ![TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4" Color Screen with Printer - Image 1](https://m.media-amazon.com/images/I/716yJSODJqL.jpg) ![TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4" Color Screen with Printer - Image 2](https://m.media-amazon.com/images/I/81MYGuPzEsL.jpg) ![TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4" Color Screen with Printer - Image 3](https://m.media-amazon.com/images/I/71vERNYD6BL.jpg) ![TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4" Color Screen with Printer - Image 4](https://m.media-amazon.com/images/I/81VAzf6pOIL.jpg) ![TOPDON BT300P-A Car Battery Tester 12V/24V, 2.4" Color Screen with Printer - Image 5](https://m.media-amazon.com/images/I/816ORVe8e7L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Where can I buy new printer rolls from?** A: Hello, you can search it on Amazon, here is the size: 2 1/4" x 2.0'. If you have any further questions, please contact us: support@topdon.com. **Q: Is the bag included in the package list free? It seems good.** A: Yes, if you have any further questions, please contact us at any time: support@topdon.com. **Q: Will this damage battery if connected the wrong way？** A: No. **Q: Is there a warranty on this item** A: Hello, battery tester BT300P supports a one-year warranty service. If you have any further questions, please contact us at any time: support@topdon.com. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good, All in One Battery tester *by A***S on 26 March 2022* The first impression of this tester is really good, it comes well packaged in a nicely designed box, which feels good quality and looks the part too. On opening, I found it’s all in a very nice zip case which is also very good quality, and a very nice touch. It looks good in my roll cab. The case holds the tester well and keep it organised, and as an added bonus, comes with some extra rolls of paper for the printer. To use, it’s pretty self explanatory if I’m honest, it’s easy to navigate the menus and doesn’t take much figuring out. Just clamp it on and go. I love the fact that it’s backlit, I’ve had testers in the past which aren’t and they can be difficult to read in bad light. Things I like: - Packaging and Presentation - The storage case/bag - Feels like a good quality item in your hand - Easy to use, and seems to deliver accurate results when compared with other testers and my multi-meter - Backlit display - Good quality clamps, though they could be better as I’ll explain below. Things I dislike: - Battery clamps could go a step further if they were more needle nose, I find it difficult to squeeze them onto some terminals. - Printer paper tears off a little short and often gets stuck and crumples inside the unit. A trivial con really, but can be irritating. Can be overcome if your careful how you tear it off, but could be better to avoid this if the lid had more of an internal guide. Summary: A nice unit to have and to use, I’ll have it for a long time. I find it to be accurate enough, and it all stores away nicely in its bag when not in use. I’d recommend it if you have need to tear more than the odd battery. When the weather gets better and I’ve used it some more, I’ll endeavour to do a video showing it’s use and features in more depth. ### ⭐⭐⭐⭐⭐ Battery diagnostics without the faff. *by J***R on 21 November 2025* This is an excellent product and great value for money, battery diagnostics made easy. ### ⭐⭐⭐⭐⭐ Great tester and great price *by R***Y on 26 November 2025* Great battery tester and is fast to perform it's function well made and works well IV tested against our dealer battery tester and the results are the same so is very accurate ## Frequently Bought Together - TOPDON Car Battery Tester BT300P-A, 12V 24V Battery Tester with Printer, with Battery Test, Cranking Charging Test for 100-2000CCA Batteries, Carrying Bag, 3 Rolls of Printing Paper Included - TOPDON Jump Starter JS3000, 3000A/24000mAh Battery Booster Jump Starter Power Pack for Up to 9L Gas/ 7L Diesel Engines, Portable Jump Starter Power Bank with Handle/Jumper Cable/EVA Case --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/358159358-topdon-bt300p-a-car-battery-tester-12v-24v-2-4](https://www.desertcart.us/products/358159358-topdon-bt300p-a-car-battery-tester-12v-24v-2-4) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-25*