---
product_id: 602833727
title: "VDIAGTOOL BT300 Car Battery Tester 6V 12V, 5-3000 CCA Load Tester Starter Alternator Tester Automotive Charging Cranking System Tester for Motorcycle Car Truck SUV ATV Boat"
brand: "vdiagtool"
price: "€ 71.85"
currency: EUR
in_stock: true
reviews_count: 9
category: "Vdiagtool"
url: https://www.desertcart.fi/products/602833727-vdiagtool-bt300-car-battery-tester-6v-12v-5-3000-cca
store_origin: FI
region: Finland
---

# 5-3000 CCA ultra-wide load testing range 99.99% lab-grade accuracy & real-time waveform 6V/12V universal battery compatibility VDIAGTOOL BT300 Car Battery Tester 6V 12V, 5-3000 CCA Load Tester Starter Alternator Tester Automotive Charging Cranking System Tester for Motorcycle Car Truck SUV ATV Boat

**Brand:** vdiagtool
**Price:** € 71.85
**Availability:** ✅ In Stock

## Summary

> 🔧 Never get stranded again — master your battery health like a pro!

## Quick Answers

- **What is this?** VDIAGTOOL BT300 Car Battery Tester 6V 12V, 5-3000 CCA Load Tester Starter Alternator Tester Automotive Charging Cranking System Tester for Motorcycle Car Truck SUV ATV Boat by vdiagtool
- **How much does it cost?** € 71.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/602833727-vdiagtool-bt300-car-battery-tester-6v-12v-5-3000-cca)

## Best For

- vdiagtool enthusiasts

## Why This Product

- Trusted vdiagtool brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightning-Fast & Intuitive:** 2.8" HD TFT display with one-touch testing and clear LED health indicators for effortless use.
- • **All-in-One Vehicle Coverage:** Test cars, motorcycles, trucks, SUVs, boats & ATVs with one compact device.
- • **Cranking & Charging Assurance:** Verify starter motor performance and alternator charging to avoid unexpected breakdowns.
- • **Pro-Level Battery Diagnostics:** Instantly analyze voltage, SOC, SOH, internal resistance & CCA for all lead-acid types.
- • **Bluetooth-Enabled Data Tracking:** Sync results to your phone or PC for professional record-keeping and long-term battery health monitoring.

## Overview

The VDIAGTOOL BT300 is a compact, professional-grade car battery tester supporting 6V and 12V lead-acid batteries from 5 to 3000 CCA. It delivers ultra-precise diagnostics with 99.99% accuracy, testing voltage, internal resistance, CCA, SOC, SOH, and alternator/cranking performance. Compatible with a wide range of vehicles including motorcycles, cars, trucks, SUVs, boats, and ATVs, it features a bright 2.8" HD display, intuitive interface, and Bluetooth connectivity for data tracking—empowering users to prevent battery failure and avoid costly roadside surprises.

## Description

Buy VDIAGTOOL BT300 Car Battery Tester 6V 12V, 5-3000 CCA Load Tester Starter Alternator Tester Automotive Charging Cranking System Tester for Motorcycle Car Truck SUV ATV Boat: Battery Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Accurate, Easy to Use, and a Must-Have for Any Vehicle Owner - The VDIAGTOOL BT300 Car Battery Tester is an impressive little tool that packs a lot of value for its size and price. It’s fast, accurate, and incredibly easy to use — even if you’re not a professional mechanic. Right out of the box, the BT300 feels solid and well-built. The clamps are sturdy and grip the battery terminals firmly. Once connected, it powers up instantly and gives you a clear readout on its bright LCD screen. It provides detailed information on battery health, voltage, internal resistance, cranking performance, and charging system status, all within seconds. What I really appreciate is how accurate and consistent the readings are. It easily detects weak or failing batteries before they completely die, saving you time and frustration. The menu navigation is straightforward, and the results are displayed in plain language (like “GOOD,” “RECHARGE,” or “REPLACE”), which makes it great for beginners and pros alike. Another big plus is that it supports a wide range of 12V and 24V batteries — including AGM, GEL, EFB, and regular lead-acid types. That makes it useful not just for cars, but also for trucks, motorcycles, boats, and even RVs. For anyone who likes to stay ahead on maintenance, the VDIAGTOOL BT300 is a smart investment. It’s reliable, portable, and gives professional-level diagnostics without the high cost. Whether you’re a DIYer, a shop tech, or just want to keep your car in top condition, this tester is a must-have addition to your toolbox.
Review: Works good, nice interface, worth the buy - My thoughts on the VDIAGTOOL BT300 Car Battery Tester, I'm impressed with its performance and features. This tester is a must-have for anyone who wants to ensure the health and reliability of their vehicle's battery and charging system. without the hassle of taking to a shop. The VDIAGTOOL BT300 supports both 6V and 12V batteries and covers a wide range of CCA (Cold Cranking Amps) from 5 to 3000, making it suitable for use with motorcycles, cars, trucks, SUVs, ATVs, and even boats. This level of versatility means that the device can be used across a wide range of vehicles, making it a valuable tool for professional mechanics and car enthusiasts alike. And it's small enough to be portable. One of the standout features of the VDIAGTOOL BT300 is its ease of use. The clear and intuitive interface and the large backlit display make it simple to navigate through the various testing functions. The device quickly provides accurate and easy-to-understand results, allowing users to make informed decisions about the condition of their vehicle's battery and charging system. Additionally, the VDIAGTOOL BT300 functions as more than just a battery tester. It also serves as a load tester and alternator tester, providing comprehensive insights into the overall health of the vehicle's charging and cranking system. This multifunctionality makes it easy to not only check your battery but how well the Alternator is charging it. In terms of build quality, the VDIAGTOOL BT300 feels solid and well-made, should easily last for a long time. Furthermore, the device's Bluetooth and companion app provide convenience and additional functionality. Users can easily record and track test results, allowing long-term monitoring of the vehicle's battery performance. This feature is handy for professionals who must keep detailed records for multiple cars. or while working in a shop setting where you need to have records. So far, I've used this tester on multiple vehicles and loose batteries around the shop and have no complaints works as it should.

## Features

- 【KNOW YOUR BATTERY BEFORE IT DIES】Why risk being stranded? Test your car battery like a Pro today! BT300 car battery tester is your ultimate 6V/12V battery diagnostic solution for car, motorcycle. This professional-grade automotive battery tester delivers instant, comprehensive analysis - checking voltage, load, internal resistance, ripple, SOC, SOH, CCA and charging/cranking performance - all before battery failure strikes. All you need is just a powerful car battery load tester 12v automotive!
- 【WIDE COMPATIBILITY】Universal 6V/12V Battery Testing Made Simple! The BT300 battery tester automotive works with virtually any lead-acid battery (VRLA or SLA), AGM, GEL, LSI from 5-3000 CCA - perfect for car, motorcycle, truck, SUV, boat and more. Enjoy precision adjustments with flexible CCA settings (±5 or ±50) for ultra-accurate results. One 12 volt car battery tester for all your vehicles - accurate, fast & reliable! (Note: Not compatible with Lithium Battery or Golf Cart Deep Cycle Battery)
- 【RELIABLE BATTERY TESTERS】Get instant, precise battery test with 12v auto battery tester! This digital battery analyzer delivers a real-time voltage waveform for detailed monitoring, while instantly measuring voltage, internal resistance, CCA, SOH, and SOC—all in one test. Whether your battery is in-vehicle or out, the 6 volt car battery tester provides smart, actionable advice (recharge or replace) to prevent unexpected failure. No more guesswork—just fast, accurate result and peace of mind.
- 【CRANKING & CHARGING TEST】Beyond battery testing, this car battery tester and alternator starter tester performs cranking test to check whether the starter motor is cranking properly or not and charging test of the alternator to prevent overcharge or incomplete charge. No more surprise breakdowns - just reliable power when you need it most. For accurate results, please simply turn off all electrical devices and ensure correct battery type, standard, CCA value during testing.
- 【FAST TEST & 99.99% ACCURACY】Get lightning-fast, lab-grade accuracy with this battery analyzer tester – delivering reliable result with 99.99% precision in seconds! The plug & play battery checker tester features a 2.8" HD TFT display for crystal-clear reading, one-touch testing/review/waveform analysis, and intuitive LED health indicators (Green=Good, Yellow=Normal, Red=Poor). Connect the small car battery tester with the computer for printing – perfect for quick diagnostic or detailed report.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CR6DT7RS |
| Best Sellers Rank | #47,135 in Automotive ( See Top 100 in Automotive ) #71 in Battery Testers |
| Brand | VDIAGTOOL |
| Color | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (342) |
| Date First Available | January 17, 2024 |
| Item Weight | 15.1 ounces |
| Item dimensions L x W x H | 6.45 x 3.35 x 0.96 inches |
| Item model number | BT300 |
| Manufacturer | VDIAGTOOL |
| Manufacturer Part Number | VDT-BT300 |
| Measurement Type | Multimeter |
| Min. Operating Voltage | 12 Volts |
| Power Source | Plug and Play, Powered By Car Batteries, No Need for Charging |
| Product Dimensions | 6.45 x 3.35 x 0.96 inches |
| Style | Compact |

## Product Details

- **Brand:** VDIAGTOOL
- **Color:** Black
- **Item Weight:** 0.43 Kilograms
- **Power Source:** Plug and Play, Powered By Car Batteries, No Need for Charging
- **Style:** Compact

## Images

![VDIAGTOOL BT300 Car Battery Tester 6V 12V, 5-3000 CCA Load Tester Starter Alternator Tester Automotive Charging Cranking System Tester for Motorcycle Car Truck SUV ATV Boat - Image 1](https://m.media-amazon.com/images/I/61uL5tsBXQL.jpg)

## Questions & Answers

**Q: Is it safe to use the BT300 car battery tester and alternator tester?**
A: VDIAGTOOL BT300 6 volt battery tester safeguards your battery and most importantly vehicle electronic systems with 4 protection modes: Reverse Polarity Protection, Over Temperature Protection, Short Circuit Protection and Over Current Protection.

**Q: Is the battery and alternator tester accurate?**
A: The BT300 car battery load tester 12v is quite accurate for lead acid batteries with accuracy up to 99.99%. You can also visually see the changes in voltage through the real-time waveform to make a more accurate judgment on the status of the battery.

**Q: Why In-Vehicle and Out-Of-Vehicle Tests are useful?**
A: Test batteries in vehicle and out of vehicle can meet different needs. In-vehicle testing helps evaluate how it performs within the vehicle's electrical system, and out-of-vehicle testing more accurately assesses the battery's condition & capacity.

**Q: Does this load tester come with data review & printing functions?**
A: Just connect the small battery tester with the computer and the Data Printing function allows printing out battery testing results and/or voltage waveform records saved on the battery testers.

**Q: Can this battery alternator starter tester work for 6v 12v batteries for cars and motorcycles?**
A: This batteries tester works on all 6v 12V batteries with ratings 100-3000 CCA, including Flooded lead-acid battery (VRLA or SLA), AGM, GEL, SLA, STANDARD LSI battery for cars, light duty trucks, SUVs, vans, motorcycles, RVs, ATVs, trailers, boats.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Accurate, Easy to Use, and a Must-Have for Any Vehicle Owner
*by M***N on December 15, 2025*

The VDIAGTOOL BT300 Car Battery Tester is an impressive little tool that packs a lot of value for its size and price. It’s fast, accurate, and incredibly easy to use — even if you’re not a professional mechanic. Right out of the box, the BT300 feels solid and well-built. The clamps are sturdy and grip the battery terminals firmly. Once connected, it powers up instantly and gives you a clear readout on its bright LCD screen. It provides detailed information on battery health, voltage, internal resistance, cranking performance, and charging system status, all within seconds. What I really appreciate is how accurate and consistent the readings are. It easily detects weak or failing batteries before they completely die, saving you time and frustration. The menu navigation is straightforward, and the results are displayed in plain language (like “GOOD,” “RECHARGE,” or “REPLACE”), which makes it great for beginners and pros alike. Another big plus is that it supports a wide range of 12V and 24V batteries — including AGM, GEL, EFB, and regular lead-acid types. That makes it useful not just for cars, but also for trucks, motorcycles, boats, and even RVs. For anyone who likes to stay ahead on maintenance, the VDIAGTOOL BT300 is a smart investment. It’s reliable, portable, and gives professional-level diagnostics without the high cost. Whether you’re a DIYer, a shop tech, or just want to keep your car in top condition, this tester is a must-have addition to your toolbox.

### ⭐⭐⭐⭐⭐ Works good, nice interface, worth the buy
*by N***N on April 6, 2024*

My thoughts on the VDIAGTOOL BT300 Car Battery Tester, I'm impressed with its performance and features. This tester is a must-have for anyone who wants to ensure the health and reliability of their vehicle's battery and charging system. without the hassle of taking to a shop. The VDIAGTOOL BT300 supports both 6V and 12V batteries and covers a wide range of CCA (Cold Cranking Amps) from 5 to 3000, making it suitable for use with motorcycles, cars, trucks, SUVs, ATVs, and even boats. This level of versatility means that the device can be used across a wide range of vehicles, making it a valuable tool for professional mechanics and car enthusiasts alike. And it's small enough to be portable. One of the standout features of the VDIAGTOOL BT300 is its ease of use. The clear and intuitive interface and the large backlit display make it simple to navigate through the various testing functions. The device quickly provides accurate and easy-to-understand results, allowing users to make informed decisions about the condition of their vehicle's battery and charging system. Additionally, the VDIAGTOOL BT300 functions as more than just a battery tester. It also serves as a load tester and alternator tester, providing comprehensive insights into the overall health of the vehicle's charging and cranking system. This multifunctionality makes it easy to not only check your battery but how well the Alternator is charging it. In terms of build quality, the VDIAGTOOL BT300 feels solid and well-made, should easily last for a long time. Furthermore, the device's Bluetooth and companion app provide convenience and additional functionality. Users can easily record and track test results, allowing long-term monitoring of the vehicle's battery performance. This feature is handy for professionals who must keep detailed records for multiple cars. or while working in a shop setting where you need to have records. So far, I've used this tester on multiple vehicles and loose batteries around the shop and have no complaints works as it should.

### ⭐⭐⭐⭐⭐ Great battery and charging system tester
*by B***H on December 26, 2025*

Great diagnosing tool. Good for 12v and 6v. Will test your battery, alternator, and starter. Good for all skill levels. Easy to use and understand. Really nice recall features and great read out display. Comfortably fits in any hand durable enough to use in any setting. Well built and ergonomic.

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---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-19*