---
product_id: 356276472
title: "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"
brand: "topdon"
price: "$295"
currency: NZD
in_stock: true
reviews_count: 8
url: https://www.desertcart.nz/products/356276472-car-battery-tester-12v-24v-100-2000cca-lead-acid-battery
store_origin: NZ
region: New Zealand
---

# 12V & 24V battery & system test Automatic reverse polarity & spark-free clamps Built-in thermal printer for instant reports 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

**Brand:** topdon
**Price:** $295
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your diagnostics with instant, safe, and precise battery testing!

## Quick Answers

- **What is this?** 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 by topdon
- **How much does it cost?** $295 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/356276472-car-battery-tester-12v-24v-100-2000cca-lead-acid-battery)

## 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

- • **Safety First Design:** Spark-free copper clamps and reverse polarity protection keep you and your vehicle safe.
- • **Instant Printed Reports:** Built-in thermal printer delivers clear, no-ink diagnostic receipts on the spot.
- • **Universal Compatibility:** Supports 100-2000CCA lead-acid batteries across cars, trucks, motorcycles, boats, and more.
- • **User-Friendly Interface:** 2.4” color screen and intuitive controls ensure effortless testing anytime, anywhere.
- • **Lightning-Fast Diagnostics:** Get precise battery health insights in just 3 seconds with 99.5% accuracy.

## Overview

The TOPDON BT300P is a professional-grade 12V/24V lead-acid battery tester designed for a wide range of vehicles. It delivers ultra-fast, 99.5% accurate diagnostics including battery health, starter motor cranking, and charging system status. Featuring a built-in thermal printer, spark-free clamps, and automatic reverse polarity protection, it combines safety, convenience, and precision in one compact device.

## 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

## Features

- [12V Battery 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09CT4LZZN |
| Best Sellers Rank | #7,562 in Automotive ( See Top 100 in Automotive ) #14 in Battery Testers |
| Brand | TOPDON |
| Color | Black |
| Date First Available | August 17, 2021 |
| Item Weight | 1 pounds |
| Item model number | BT300P Battery Tester |
| Manufacturer | TT TOPDON |
| Measurement Type | Voltmeter |
| Min. Operating Voltage | 12 Volts (DC) |
| Package Dimensions | 11.34 x 10.51 x 2.56 inches |
| Power Source | Battery Powered |
| Specification Met | Cca, Jis, En, Din, Sae, Iec |
| Style | For Car Truck Motorcycle ATV SUV Boat Yacht |
| UPC | 850052860714 632111336411 |
| Upper Temperature Rating | 55 Degrees Celsius |

## Product Details

- **Brand:** TOPDON
- **Color:** Black
- **Item Weight:** 16 ounces
- **Power Source:** Battery Powered
- **Style:** For Car Truck Motorcycle ATV SUV Boat Yacht

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/716yJSODJqL.jpg)

## Questions & Answers

**Q: Does this take batteries to work?**
A: Yes, car battery tester TOPDON BT300P needs to connect with batteries to work. If you have any other questions, please contact us at any time: support@topdon.com.

**Q: cuanto pesa el probador**
A: Hola, el probador de batería de automóvil BT300P pesa 1,9 libras. Si tiene alguna otra pregunta, háganoslo saber: support@topdon.com.

**Q: Will this unit work to test 24V lithium motorcycle batteries?**
A: No, car battery tester TOPDON BT300P can't support lithium batteries. If you have any further questions, please contact us at any time: support@topdon.com.

**Q: What data can this battery tester BT300P test?**
A: Hello, car battery tester TOPDON BT300P supports battery test (CCA value/rating, voltage, internal resistance, state of health (SOH), and state of charge (SOC)), charging test (loaded voltage, unloaded voltage), and cranking test. If you have any other questions, please contact us: support@topdon.com.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product and price
*by J***Y on February 18, 2024*

I purchased this product due to the winter stress on batteries in my vehicle and work vehicle. I wanted something dependable and easy to use and yet affordable. I was amazed at the simplicity and yet professional grade of this item. I am very highly satisfied with it and I brought my printout and the tester to the local auto store to prove my battery was defective and needed warranty replace. They had one obviously but it was quickly handled and replaced with no hassle thanks to this product. I was also able to rightfully test my other batteries in my other vehicles and plan to have them replaced as well due to the status of knowing before I even drive out of my way to the store. So awesome and professional and the price is very reasonable and I highly recommend this product. The replacement printer paper is also very affordable and should last you a long time. It comes with 3 rolls one of which is installed already in the unit. I purchased an extra 12 roll set at a combined reduced price from Amazon. It delivered on time and I love it. Thank you Topdon and Amazon.

### ⭐⭐⭐⭐⭐ works great
*by A***S on August 26, 2025*

great quality and results, provides my customers with proper numbers so they can know the life of their battery.

### ⭐⭐⭐⭐⭐ Great Battery Tester!  Good Accuracy and nice features.  Definitely worth having.
*by W***R on March 9, 2025*

I had been on the fence about getting a battery analyzer for many years. But since my boat batteries were getting old this year, I decided to buy a tester rather than to find out I had a battery on the water; or have to take my batteries to a shop to be tested. There are a lot of testers out there and it was difficult to make a decision. After reading and watching many reviews, I decided to buy a TOPDON tester. The main factor that made me decide upon the TOPDON was a YouTube video where a guy compared several of these portable electronic analyzers to an expensive shop analyzer from his auto repair shop. In the tests he performed, the TOPDON was closest (if not exactly the same) as the numbers he was getting from an analyzer that costs thousands. Then I had to decide upon model; I didn't want the cheapest one, but I also wanted one with some advanced features. I ended up with the TOPDON BT300P. The BT300P has multiple tests that you can perform on your battery; it also has the advantage of being able to print out the results. I find the print feature to be a nice addition because now I can test my batteries and save the printouts to compare the results of my tests over time. In addition, it will test nearly any type of battery that you desire; you make the battery type and CCA selection when setting up for the test. My thought is that I will be able to see the regression of the batteries over time and be able to make a new purchase decision before I'm left stranded.I tested six batteries with this on the first day I had it: two old Deep Cycle trolling batteries from my boat, one old starting battery from my boat, the main battery from one of my cars; and the two new Deep cycle trolling batteries that I wound up buying for my boat as a result of testing. The boat starting battery came back as good; it definitely is showing its age as the cold cranking amps were a bit lower and the health registered as 83%; but still good nonetheless and it does still work. The two old Deep Cycle batteries were another story. These two batteries were reading good with a multimeter and my boat onboard charger showed green for them as well. But when I tested these two Deep Cycle batteries with the BT300P; it immediately flagged then as having bad cells. So, after that test, I turned on the trolling motor to test them and sure enough it died withing a few minutes of turning it on. If I didn't have this tester, I would have taken my boat out based on multimeter readings and the onboard charger indication; and I would have been stuck out on the water without my trolling motor working. The two new Deep Cycle batteries that I bought tested 100% health and also show more MCA and CCA than the battery was rated at: so definitely good new batteries. My car battery that I tested was really just so I could get a feel for whether or not I would have confidence in this tester. The test on my car battery showed a slight decline in health (91%) and a very small drop in CCA; it was what I would expect from a 3- and 1/2-year-old battery. So, after testing all these batteries, I can honestly say that I do have confidence in the results of this battery tester and given the accuracy, features, and price point I can highly recommend the BT300P if you think you may need to purchase a battery analyzer/tester.Some things to consider that may possible debunk some of the bad reviews here:1. You must know your battery type and CCA and make the proper selection. The first two times that I tested my boat starting battery; it showed failed. I was a bit perplexed as most of the numbers appeared to be adequate. Then, I discovered it was my fault because I was selecting the wrong battery type. Once I verified the battery type and made the right selection; it passed (still providing the same numbers).2. Yes, you do need a good connection to your terminals. This wasn't an issue for me since I keep my terminals clean. But if I were to test my old truck battery; I would probably need to clean things up first. Connection isn't an issue providing that you ensure you have a good clean, corrosion free surface to work with.3. The cables could probably be a bit longer. However, the shorter cable length was not a problem. I would actually rather have the shorter cables as the BT300P does, because longer cables would mean that the tester and cables would require a bigger footprint in my toolbox. The tester and cables fit nicely in the tester tool pouch (included with purchase) and it doesn't take up too much space; like my jumper cables do (for example).CONCLUSION:I am completely satisfied with my purchase of the BT300P. I have been thinking about buying a battery tester for years; but really wasn't sure what to buy. The number of tests available and the results that I experienced in my testing gives me confidence that I can accurately assess the health of my batteries at my home; and gives me the information that I need to make an informed decision of whether to continue using or to replace my batteries. I actually caught the BT300P on a one-day sale, which made it less than the BT200. Had the BT300P not been on sale, I would have bought the BT200. However, the print function of the BT300P is probably worth the extra money since you can keep records of your results to track battery health over the life of the battery. Overall, I am really happy with this purchase and have zero regrets. Just identifying my bad Deep Cycle batteries one time made this purchase pay off and prevented me from having a bad day on the water. It is difficult for me to give the BT300P any rating less than five stars. It's been great so far!

## Frequently Bought Together

- 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
- TOPDON 2 1/4" x 2.0' Thermal Paper Cash Register POS Receipt Paper (10 Rolls)
- Lisle 81850 Combination Brake Lining Gauge Set,9

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-07*