---
product_id: 500574841
title: "TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections"
brand: "topdon"
price: "966 kr"
currency: ISK
in_stock: false
reviews_count: 8
url: https://www.desertcart.is/products/500574841-tt-topdon-topdon-bt20-car-battery-tester-12v-lead-acid
store_origin: IS
region: Iceland
---

# 99.5% testing accuracy Bluetooth app integration 12V lead-acid battery support TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections

**Brand:** topdon
**Price:** 966 kr
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Power up your diagnostics game with precision and ease!

## Quick Answers

- **What is this?** TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections by topdon
- **How much does it cost?** 966 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/500574841-tt-topdon-topdon-bt20-car-battery-tester-12v-lead-acid)

## 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:** Reverse polarity and no-spark protections ensure worry-free testing every time.
- • **Instant One-Click Testing:** Get accurate battery health & voltage results in seconds with a single press.
- • **Seamless Bluetooth Connectivity:** Sync with the Batterylab app for real-time voltage monitoring and detailed test reports.
- • **Comprehensive 4-in-1 Testing Modes:** Load, voltage, cranking, and charging tests cover all your battery diagnostics needs.
- • **Universal Compatibility & Multilingual:** Works with cars, motorcycles, boats, and trucks; supports 8 languages for global usability.

## Overview

The TOPDON BT20 is a professional-grade 12V lead-acid car battery tester featuring four essential test modes, a vibrant color LCD for clear results, and Bluetooth app integration for real-time monitoring and report sharing. With 99.5% accuracy and multiple safety protections, it’s designed for both DIYers and pros, compatible with a wide range of vehicles, and supports 8 languages for global convenience.

## Description

Full description not available

## Features

- 【Good News】 Our IOS app (batterylab) has gone live again. IOS users can search batterylab on APPLE APP store to download the app and get access to the bluetooth features. Android Users search BT20 on Google Play as usual..
- 【Cost-effective Battery Tester】The TOPDON BT20 battery tester works on 12V lead-acid batteries with 4 testing modes: battery load test (10-20V), voltage test, cranking test and charging test. Equipped with a color LCD screen, this car battery tester can display the testing results clearly even in the sunlight.
- 【Accurate Result with One-Click】Press the 'TEST' button; the Battery Voltage Indicator(FULL/MEDIUM/LOW) and Health Indicator(GOOD/MEDIUM/BAD) will light up to show the test result in seconds. Get the accurate test results with only one-click, easy to use for both professional technicians and DIYers.
- 【More Advanced Functions with the APP】BT20 battery load tester supports cranking tests and charging tests via the App. The TOPDON BT20 lets users share and save test records with ease. Generate a real-time voltage monitoring waveform graph to track the data intuitively; save the real-time test report to analyze faults and potential problems.
- 【Extreme Accuracy and Safety】 Adopting the latest conductivity testing technology (up to 99.5% accuracy), this battery load tester can display an accurate result in seconds. Reverse polarity protection and no-sparks protection safeguard your testing jobs; this make the BT20 an ideal entry-level battery tester for newbies.
- 【Wide Vehicle Coverage & 8 Languages】TOPDON’s BT20 12V car battery tester works on the most common 12V lead-acid battery types and supports a testing range of 5-20V. It’s also compatible with boats, motorcycles and trucks. Simply connect the clamps to the battery and test your battery easily; plug and play. Operates in 8 languages.
- 【Ideal for Car Owners】The BT20 has safety features such as reverse polarity and "no spark" protection and long clamp leads for testing from inside or outside the vehicle. It's a perfect battery analyzer and load tester for small repair shops and car owners alike. Makes a great gift for car enthusiasts.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TOPDON |
| Part number | BT20 |
| Item Weight | 320 g |
| Package Dimensions | 18.7 x 10.6 x 8.6 cm; 320 g |
| Item model number | BT20 |
| Colour | red |
| Style | BT20 |
| Power source type | Corded Electric |
| Specification met | RoHS |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** TOPDON
- **Power source:** Corded Electric
- **Style:** BT20
- **Colour:** red
- **Min. Operating voltage:** 12 Volts (DC)

## Images

![TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections - Image 1](https://m.media-amazon.com/images/I/71cNl8sfxQL.jpg)
![TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections - Image 2](https://m.media-amazon.com/images/I/71cBgueIKSL.jpg)
![TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections - Image 3](https://m.media-amazon.com/images/I/71i5UYlapiL.jpg)
![TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections - Image 4](https://m.media-amazon.com/images/I/71hPOe3GZsL.jpg)
![TT TOPDON TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections - Image 5](https://m.media-amazon.com/images/I/719D4-+xH9L.jpg)

## Questions & Answers

**Q: Hi,What's in the box?**
A: Hello, it comes with a BT20 battery tester with the battery clamps and User Manual. Please check the details from the attached video. Any further questions, feel free to contact us.

**Q: do you have to pay for any services on the app or is it free to use once downloaded?**
A: Hello, no fee is needed. It's free to use. Any further questions, feel free to contact us.

**Q: Why cant this be used with 12 volt lithium lifepo4 car starter batteries?**
A: Hello, TOPDON BT20 is a lead-acide battery tester. It can't be used with 12 volt lithium lifepo4 car starter batteries. Any further questions, feel free to contact us.

**Q: I cant find the BT20 app listed on the UK Apple app store. Can you advise how I can download it or post a link her to the IOS version of the BT20App ?**
A: Hello, the APP for IOS users is called "BatteryLab" now. Kindly download this APP from the APP store direclty. If you use it on your Android phones, you could still download the APP "BT20" from the Google Play Store. Any further issues, feel free to contact us.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value for the money!
*by B***S on 1 January 2023*

I have a tricky relationship with my battery on my Chrysler GV. I didn’t want to shell out for a new battery so I thought I’d get this first to test it.The set up is easy to use, even for someone like me who isn’t super savvy with cars. You have to download the app, connect to the device by Bluetooth and once connected to the battery the results are clear. The cool thing is that you can get the results through the app or the device. The app will give you more information with real time voltage, cranking tests, charging tests and battery tests.What I like the most about the app is that there is a timeline so I can see how my battery is performing- turns out there was a a power drain to my battery and I don’t need a new one!Excellent value for money and great for peace of mind.

### ⭐⭐⭐⭐⭐ Great piece of kit
*by G***S on 12 July 2023*

Once the app is loaded which was very quick and simple the unit worked very well showing my battery and alternator are fine but the ammeter is where the problem is on the car. So saved me a lot os time and money

### ⭐⭐⭐⭐⭐ Good bit of kit.
*by H***T on 18 July 2024*

Quick and easy to use, very accurate. Good value for money. Very happy with it.

## Frequently Bought Together

- TOPDON BT20 Car Battery Tester, 12V Lead-acid Battery Load Tester, Voltage Test, Cranking Test, Charging Test, Real-time Voltage Monitoring, Test Report, Multiple Safety Protections
- TOPDON OBD2 Code Reader AL400 OBD2 Scanner, Car Diagnostic Tool with 10 OBD Functions- Check Engine Light/Smog Emission Test/O2 Sensor Test/EVAP, Free Lifetime Update

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-19*