Battery Master 12V

"Battery Master 12V" is the detection tool for lead acid battery.

taiwanyichengkeji · com.leagend.bt2000_app

Not rated yet 50K+ downloads v2.7.4 32.7 MB Android 6.0+ PEGI 3 · Everyone

Download APK 32.7 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.7.4 (40)
Updated: Feb 22, 2026 (8 months ago)
APK size: 32.7 MB
Requires: Android 6.0+ (API 23)
CPU support: ARM 32-bit, ARM 64-bit
Category: Tools (app)
Listed since: Jun 14, 2024 (at least)
Permissions: 29 (12 sensitive)
Website: taiwanyichengkeji.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Battery Master 12V is an app by taiwanyichengkeji in the Tools category, listed since at least June 2024. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 2.7.2, the APK grew from 17.6 MB to 32.7 MB and the minimum Android version rose from 5.0 to 6.0. It asks for 29 permissions, 12 of them sensitive, including precise location, location in the background and camera. Compared with version 2.7.3, it adds 1 new permission (“Prevent the device from sleeping”) and drops 2 (“Foreground service location” and “Run at startup”). The app can read the advertising ID that ad and analytics services use.

What's new in v2.7.4

1. Compatible with Android 15 2. Optimized related details

Description

From the listing uploaded by “appupdater”.

"Battery Master 12V" is the detection tool for lead acid battery. By installed on battery, it can intelligently test battery CCA and health condition, calculate battery available use life based on temperature and CCA data sheet. When phone is close to device, the app will automatically obtain battery test result. Also, user can alternatively test battery health, cranking system and charging system. All saved history test results can be shared and printed out.

Version history

3 versions are listed, going back to v2.7.2. Since v2.7.4 it requires Android 6.0+.

v2.7.4 LATEST Feb 22, 2026 32.7 MB TRUSTED v2.7.3 Nov 4, 2025 18.5 MB TRUSTED v2.7.2 Jul 14, 2026 17.6 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Feb 22, 2026.
Certificate issued to “shenzhen dacheng software company” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Feb 22, 2026
Validated against Google Play Feb 22, 2026
Signed byCN=yihaitao, OU=shenzhen dacheng software company, O=shenzhen dacheng software company, L=shenzhen, ST=guangdong, C=cn
Signing certificate (SHA-1)8D:BC:AC:1E:2E:D7:E2:46:7B:3D:67:68:44:49:41:AD:A9:36:53:BD
File MD5901f9a7d9117dab6e9a7a8b95c8f0ffc
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (29)

Battery Master 12V requests 29 permissions, 12 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
Camera Sensitive android.permission.CAMERA
Location in the background Sensitive android.permission.ACCESS_BACKGROUND_LOCATION
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Read media audio Sensitive android.permission.READ_MEDIA_AUDIO
Read media images Sensitive android.permission.READ_MEDIA_IMAGES
Read media video Sensitive android.permission.READ_MEDIA_VIDEO
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Access location extra commands android.permission.ACCESS_LOCATION_EXTRA_COMMANDS
Advertising ID com.google.android.gms.permission.AD_ID
Change network state android.permission.CHANGE_NETWORK_STATE
Change wifi state android.permission.CHANGE_WIFI_STATE
Control vibration android.permission.VIBRATE
Flashlight android.permission.FLASHLIGHT
Foreground service connected device android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.leagend.bt2000_app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Launcher change badge (custom) com.huawei.android.launcher.permission.CHANGE_BADGE
Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
Notification badge icon (custom) com.vivo.notification.permission.BADGE_ICON
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Bluetooth android.hardware.bluetooth
Bluetooth Low Energy android.hardware.bluetooth_le
Camera android.hardware.camera
Camera autofocus android.hardware.camera.autofocus
Basic touch input android.hardware.faketouch
Location android.hardware.location
Landscape screen android.hardware.screen.landscape
Wi-Fi android.hardware.wifi

Battery Master 12V APK: questions and answers

Is there a version of Battery Master 12V for older Android phones?

The current version needs Android 6.0 or later. Version 2.7.3 is the newest listed build that installs on Android 5.0 and later. Get version 2.7.3 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Battery Master 12V APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 901f9a7d9117dab6e9a7a8b95c8f0ffc.