---
product_id: 465599569
title: "12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat"
brand: "topdon"
price: "€ 98.31"
currency: EUR
in_stock: true
reviews_count: 9
url: https://www.desertcart.gr/products/465599569-12v-car-battery-tester-topdon-bt20-battery-load-tester-100
store_origin: GR
region: Greece
---

# 99.5% accuracy conductivity tech Bluetooth app-enabled testing 100-2000 CCA load range 12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat

**Brand:** topdon
**Price:** € 98.31
**Availability:** ✅ In Stock

## Summary

> 🔧 Power up your ride’s health with smart, app-driven precision!

## Quick Answers

- **What is this?** 12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat by topdon
- **How much does it cost?** € 98.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/465599569-12v-car-battery-tester-topdon-bt20-battery-load-tester-100)

## 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

- • **Compact & Portable:** Sleek, lightweight design fits in your glove box or toolbox—perfect for DIYers and pros on the go.
- • **Safety-First Design:** No-spark clamps and reverse polarity protection ensure safe testing every time, even inside your vehicle.
- • **App-Enhanced Diagnostics:** Unlock cranking & charging tests plus real-time voltage waveform graphs via the intuitive Batterylab app.
- • **Universal 12V Compatibility:** Works seamlessly with 12V lead-acid batteries across cars, trucks, SUVs, boats, and motorcycles.
- • **Instant Battery Health Check:** Get reliable battery status in under 1 second with ultra-precise conductivity technology.

## Overview

The TOPDON BT20 is a budget-friendly, compact 12V car battery tester supporting 100-2000 CCA load tests. It pairs with the Batterylab app for advanced cranking and charging diagnostics, real-time voltage waveform visualization, and historical data recording. With 99.5% accuracy, universal 12V lead-acid battery compatibility, and built-in safety features, it’s an essential tool for car owners and mechanics seeking fast, reliable battery health insights.

## Description

Buy 12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat: Battery Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: I am quite impressed by this battery tester so far. - I just got this battery tester today, but I have several batteries laying around to test it with and an old (15 years old) OTC battery tester to compare it to. I also have a couple multimeters to match both of them up with. This reads the voltage to the tenths of a volt on the tester itself, but to the hundredths on the app. It's accurate more than accurate enough, a bit of fluctuation in the hundredths between all my testers, but that isn't uncommon. First, this will actually drop the voltage during testing, quite a bit if the battery isn't very good. Can't say that of my old OTC. This will not give a read out of the cranking or cold cranking amps, my OTC will. How accurate is it? Who knows, but it hasn't let me down in 15 years. Now, here's where things get complicated. My old OTC will give one battery I have a pass, where as this tester fails it under a load. I trust this tester due to the drop in voltage (I didn't save the test or I would have the numbers and would post the picture) seen when testing it. It's a small battery that sat a long time, although it holds a charge just fine and the voltage is also fine at 12.6v. Overall, I'm impressed. This cost me about $20 on sale and I'm glad I jumped on it. I have other batteries I plan on testing with it, one had been sitting on the charger (just floating, already fully charged) for a while and needs to rest before I test it. Oh, and the app is very easy to use. I haven't used all of the features, but I intend to make a point to. I think this will work great and would be a great addition for any level of tech that picks it up for their home or shop toolbox or emergency tool kit. I will update sometime in the future after I've used it for a while.
Review: Well worth the money! - This is going to be a detailed review. The short version is, its a MUST buy! Lets start with the packaging, nice simple box with plenty of information on it. Once you open it up, you find the tester and instructions. The instructions are well written, and in a few different languages. The tester feels nice and solid, if you squeeze it the plastic does not flex or squeak. The clamps are compact but feel solid and they open really wide making it easy to get onto any battery terminal. The tester is simple and advance at the same time. When you hook up the tester to a battery, it will tell you if the battery is low on power right away as you can see in one of my pictures. The first battery was reading at 9.7v and the tester told me right away. On another picture you can see I am testing it on one of my cars that sits a lot. Battery shows 12.1v, but hitting the "TEST" button, it puts a load test and told me it was falling down to 10.6v. The tester is also advance, once you download the app to your phone, you can run a few different test. The load test will graph out the results if the battery drops down a lot. The best part, after every test you can save the results to check out anytime. The last test I tried was the cranking test, right away it told me the battery has low cranking voltage. I suspected this was the case, as it has gotten colder I have noticed the battery struggling a bit, this only confirms what I suspected. My ONLY complaint, I wish they would have put a QR code to download the app, either on the box or instructions. However the instructions does tell you to download the app from either the playstore or Apple app store. Over all this is a must buy for any dyi'er or even a professional mechanic. Also would make a great stocking stuff to any gear head!

## Features

- First Things First: Cranking and Charging Tests are available only on APP. Both IOS users and Android Users need to download "Batterylab" App to get access to these two features. This tester CANNOT test lithium battery, nor 6V/24V batteries.
- Budget-Friendly: Below $20, the TOPDON battery tester BT20 is a great value for a car battery tester. With four testing modes (battery load, voltage test, two app-exclusive modes: cranking, and charging), this tester works on 12V lead-acid batteries. Note that the latter two test modes require an app.
- Expanded Testing Abilities with APP: The TOPDON BT20 battery load tester pairs with your device via Bluetooth to access additional cranking and charging tests. The app displays real-time voltage waveform graphs with data playback functionality. Note that Bluetooth is to be connected via the app, not phone settings.additional cranking, charging, and voltage testing capabilities. Easily view real-time voltage waveform graphs with data playback functionality. NOTE: Bluetooth is to be connected via APP, not phone setting.
- Fast & Accurate Results: Get battery life displayed in Low/Medium/High within 1 second by clicking the TEST button. The testing accuracy can reach 99.5%, thanks to the latest conductivity technology. The TOPDON BT20 battery tester is ideal for users who want quick and reliable results. Note that Bluetooth is to be connected via the app, not phone settings.
- Universal Compatibility & Multi-Language Support: Ready to use with 12V lead-acid batteries found in a variety of vehicles, including boats, motorcycles, ships, and trucks. With 8 different language options, it's easy to use this device anywhere in the world.
- Ideal for Car Owners: The TOPDON BT20 12v battery analyzer 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 |
|---------------|-------|
| ASIN | B0B5T7212M |
| Best Sellers Rank | #129,898 in Automotive ( See Top 100 in Automotive ) #125 in Battery Testers |
| Brand Name | TOPDON |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,624) |
| Global Trade Identification Number | 00850028162750 |
| Included Components | 1*BT20 Car Battery Tester; 1*User Manual. |
| Item Dimensions | 5.71 x 2.8 x 1.38 inches |
| Item Weight | 0.58 Pounds |
| Manufacturer | TT TOPDON |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 5 Volts |
| Model | TOPDON BT20 Car Battery Tester |
| Power Source | Battery Powered |
| Specification Met | Iec,sae |
| Style Name | Compact |
| UPC | 850028162750 |
| Unit Count | 1.0 Count |
| Warranty Description | TOPDON provides 2 Year Warranty for all products. In case of any inquiries, please feel free to contact us at 833-956-8335 Monday-Friday 9:00AM-6PM Eastern Time. |

## Product Details

- **Brand:** TOPDON
- **Color:** Black
- **Item Weight:** 0.58 Pounds
- **Power Source:** Battery Powered
- **Style:** Compact

## Images

![12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat - Image 1](https://m.media-amazon.com/images/I/71QDtlfM-jL.jpg)
![12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat - Image 2](https://m.media-amazon.com/images/I/712V9cPvSFL.jpg)
![12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat - Image 3](https://m.media-amazon.com/images/I/71D+tWyEepL.jpg)
![12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat - Image 4](https://m.media-amazon.com/images/I/71U9K1qIE+L.jpg)
![12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat - Image 5](https://m.media-amazon.com/images/I/71bueLznQNL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: How to connect to bluetooth? I tried to connect via phone setting but failed.**
A: Hello, attached is a video to show you the detailed steps. If you still can't connect it to your phone, please let us know the OS and model of your phone so that we might check your issue further. Any further questions, feel free to contact us.

**Q: Can i get instant results after pressing test?**
A: Hello, please wait a few seconds after pressing the Test button, and the corresponding Battery Voltage Indicator (FULL / MEDIUM / LOW) and Battery Health Indicator (GOOD / MEDIUM / BAD) will light up to show the test result. Please note that once the Bluetooth is connected, the Test Button on the battery tester will no longer work. In this case, you can only test batteries via the APP. Any further questions, feel free to contact us.

**Q: does it  test lithum battery and agm battery**
A: Im not a 100% sure, but as long as i know it test many types of batteries

**Q: Do you have a product that can test a 2 volt battery?**
A: No, TOPDON doesn't have a battery tester that will test a 2V battery. If you have any other questions in the future, feel free to contact us at support@topdon.com.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I am quite impressed by this battery tester so far.
*by T***Y on February 3, 2023*

I just got this battery tester today, but I have several batteries laying around to test it with and an old (15 years old) OTC battery tester to compare it to. I also have a couple multimeters to match both of them up with. This reads the voltage to the tenths of a volt on the tester itself, but to the hundredths on the app. It's accurate more than accurate enough, a bit of fluctuation in the hundredths between all my testers, but that isn't uncommon. First, this will actually drop the voltage during testing, quite a bit if the battery isn't very good. Can't say that of my old OTC. This will not give a read out of the cranking or cold cranking amps, my OTC will. How accurate is it? Who knows, but it hasn't let me down in 15 years. Now, here's where things get complicated. My old OTC will give one battery I have a pass, where as this tester fails it under a load. I trust this tester due to the drop in voltage (I didn't save the test or I would have the numbers and would post the picture) seen when testing it. It's a small battery that sat a long time, although it holds a charge just fine and the voltage is also fine at 12.6v. Overall, I'm impressed. This cost me about $20 on sale and I'm glad I jumped on it. I have other batteries I plan on testing with it, one had been sitting on the charger (just floating, already fully charged) for a while and needs to rest before I test it. Oh, and the app is very easy to use. I haven't used all of the features, but I intend to make a point to. I think this will work great and would be a great addition for any level of tech that picks it up for their home or shop toolbox or emergency tool kit. I will update sometime in the future after I've used it for a while.

### ⭐⭐⭐⭐⭐ Well worth the money!
*by S***N on October 18, 2022*

This is going to be a detailed review. The short version is, its a MUST buy! Lets start with the packaging, nice simple box with plenty of information on it. Once you open it up, you find the tester and instructions. The instructions are well written, and in a few different languages. The tester feels nice and solid, if you squeeze it the plastic does not flex or squeak. The clamps are compact but feel solid and they open really wide making it easy to get onto any battery terminal. The tester is simple and advance at the same time. When you hook up the tester to a battery, it will tell you if the battery is low on power right away as you can see in one of my pictures. The first battery was reading at 9.7v and the tester told me right away. On another picture you can see I am testing it on one of my cars that sits a lot. Battery shows 12.1v, but hitting the "TEST" button, it puts a load test and told me it was falling down to 10.6v. The tester is also advance, once you download the app to your phone, you can run a few different test. The load test will graph out the results if the battery drops down a lot. The best part, after every test you can save the results to check out anytime. The last test I tried was the cranking test, right away it told me the battery has low cranking voltage. I suspected this was the case, as it has gotten colder I have noticed the battery struggling a bit, this only confirms what I suspected. My ONLY complaint, I wish they would have put a QR code to download the app, either on the box or instructions. However the instructions does tell you to download the app from either the playstore or Apple app store. Over all this is a must buy for any dyi'er or even a professional mechanic. Also would make a great stocking stuff to any gear head!

### ⭐⭐⭐⭐ Doesn't work with my side post battery leads
*by N***Y on November 1, 2022*

I could not use this meter on my side post battery application. The metal teeth are recessed too far back from the edge of the plastic clamp to grip the slot in the attachment bolts on the battery leads. The only way I could get it to work was to clamp the hex end of the bolt, but that is was too unstable, especially when trying tests when the engine is running. The clamps need to be redesigned like normal jumper cables. The meter probably works well with top post batteries. Update: I increased my rating from 2 to 4 for two reasons. First, I devised a work around using two independent small clamps that gripped the posts very securely. Then I clipped the device's clamps to them. I was then able to test the device and it worked well. I especially like the cell phone app that allows the phone to connect through blue tooth to the device. This provides more features and allows you to run the starter and charging tests from inside the vehicle, saving multiple trips back out to the device. You can also save the test results to the cell phone for future reference. Second, I was very impressed with customer service. They worked with me through the entire experience and were very interested in helping me. If they develop a clamp design that works directly, I will increase the rating to a 5.

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-04-25*