# BT20

> Wireless battery tester synchronization and real-time data monitoring app. (iPhone/iPad app by Hunan Lianke Technology Co., Ltd.)

- Source: https://appshunter.io/ios/app/bt20/id1613454941 (this page in markdown: same URL + `.md`)
- Developer: [Hunan Lianke Technology Co., Ltd](https://appshunter.io/developer/1554825443)
- Category: Utilities
- Price: Free
- Rating: 4.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 40 MB
- Languages: English, French, German, Italian, Japanese, Portuguese, Russian, Chinese, Spanish, Chinese
- Released: 2022-05-11
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/bt20/id1613454941/reviews.md

## What is BT20?

Easily synchronize your BT20 wireless battery tester to your smartphone or tablet. 12V wireless battery load tester, real-time data monitoring. Download and install THE BT20 APP on your device to experience the most convenient testing technology.
Features:
The load test
Charging test
Start the test
Real-time voltage waveform diagram
Easy and fast Bluetooth pairing
Sharing of test results
A variety of languages
BT20 is a software developed by TOPDON Technology Co., LTD. TOPDON Technology Co., Ltd. owns all rights of the software (including but not limited to web pages, text, pictures, audio, video, charts, computer software, commercial logos, etc.) independently.

## Key features

- Wireless battery tester synchronization
- Real-time data monitoring
- Load, charging, and start tests
- Voltage waveform diagram
- Bluetooth pairing
- Test result sharing
- Multi-language support

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/bt20/id1613454941/reviews.md

### 4/5 — Missing CCA value

*2022-12-07, version 1.0.0*

Hi. The tester is good over all. But the app needs update to change or add CCA cold cranking amps value to current options AH and A. That the only thing needs right now. Thanks

## Frequently asked questions about BT20

### What devices can I use BT20 with?

BT20 is compatible with iPhone, iPad, and iPod devices. It utilizes Bluetooth for seamless connectivity with your wireless battery tester.

### How often is BT20 updated?

The latest version of BT20 is 1.20.002, last updated on January 29, 2023. This indicates regular updates to improve functionality and compatibility.

### What kind of tests can BT20 perform?

BT20 supports load tests, charging tests, and start tests. It also provides a real-time voltage waveform diagram for detailed analysis.

### Can I share my battery test results with BT20?

Yes, BT20 allows for easy sharing of your battery test results. This feature is useful for record-keeping or consulting with others.

### What is the age rating for BT20?

BT20 has an age rating of 4+, making it suitable for a wide range of users. The app focuses on utility and technical data.

### Does BT20 support multiple languages?

Yes, BT20 offers support for a variety of languages, enhancing its usability for a global audience.

### How does BT20 connect to the battery tester?

BT20 uses easy and fast Bluetooth pairing to connect wirelessly to your BT20 wireless battery tester, enabling real-time data synchronization.

### What is the user rating for BT20?

BT20 has a user rating of 4.0 stars based on 3 ratings. This suggests a generally positive user experience.

## Version history (last 1 release)

### 1.20.002 — 2023-01-29

1. Expanded Battery Type Testing
Before: NORM Batteries Only.
Now: added NORM, AGM, EFB, and GEL types.
2. New Battery Testing Standards
Before: CCA and Ah Standards Only.
Now: added JIS, SAE, BCI, CA, EN, IEC, DIN, and MCA Standards.
3. Added SOC (State of Charge), SOH (State of Heath) Testing
Other Improvements
We removed minor bugs so the BT20 operates even more efficiently.

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## More apps by Hunan Lianke Technology Co., Ltd

- [OBD AutoMate](https://appshunter.io/ios/app/obd-automate/id1242683013)
- [ArtiBox](https://appshunter.io/ios/app/artibox/id1242782644)
- [BT-MOBILE](https://appshunter.io/ios/app/bt-mobile/id1408394687)
- [DiagAsst](https://appshunter.io/ios/app/diagasst/id1414164104)
- [SmartDiag Mini](https://appshunter.io/ios/app/smartdiag-mini/id1551096244)
- [BTMobile Pro HD](https://appshunter.io/ios/app/btmobile-pro-hd/id1562070921)

All apps by Hunan Lianke Technology Co., Ltd: https://appshunter.io/developer/1554825443

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*