# Maxbattery

> Maxbattery is a tool to detect the status of car batteries

Canonical page: [https://chrome-stats.com/d/com.cnlaunch.maxbattery](https://chrome-stats.com/d/com.cnlaunch.maxbattery)

## Overview

- **ID:** `com.cnlaunch.maxbattery`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Matco Tools
- **Category:** LIFESTYLE
- **Downloads:** 13,662
- **Rating:** 2.59 / 5 (81 ratings)
- **Version:** 1.01.018
- **Last updated:** 2025-12-30
- **First published:** 2021-10-20
- **Publisher country:** US
- **Size:** 9.14 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.cnlaunch.maxbattery)
- **Privacy policy:** [https://www.matcotools.com/customercare/privacy-policy/](https://www.matcotools.com/customercare/privacy-policy/)

## Description

Maxbattery is a reliable Chrome extension designed for both technicians and consumers to easily detect the status of car batteries. It ensures safe usage by incorporating anti-heat characteristics and protection against backfire electrical sparks, typically encountered during electrical system diagnoses.

Key features include comprehensive battery health tests, start system checks, charging system evaluations, and generation of detailed test reports. Maxbattery supports a variety of 6V and 12V battery types including lead-acid, GEL, and AGM batteries. It also supports multiple battery standards such as CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE, and GB, making it a versatile tool for automotive battery diagnostics.

## Rankings

- #501,505 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.BLUETOOTH`
- `android.permission.BLUETOOTH_ADMIN`
- `android.permission.BLUETOOTH_CONNECT`
- `android.permission.BLUETOOTH_SCAN`
- `android.permission.CHANGE_WIFI_STATE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_MEDIA_AUDIO`
- `android.permission.READ_MEDIA_IMAGES`
- `android.permission.READ_MEDIA_VIDEO`
- `android.permission.READ_MEDIA_VISUAL_USER_SELECTED`
- `android.permission.READ_PHONE_STATE`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.SYSTEM_OVERLAY_WINDOW`
- `android.permission.VIBRATE`
- `android.permission.WRITE_EXTERNAL_STORAGE`

## Review summary

The Maxbattery app initially worked well, especially on Apple devices, but many users report persistent connectivity problems on Android devices after recent updates. Users find it difficult to connect the app to their devices, and sometimes the app only shows a blank screen. Privacy concerns arise from unnecessary permissions requested by the app. Additionally, sharing functionality is unreliable, often resulting in corrupted files. Users request features like VIN input, multiple battery testing, and better live data during testing to improve the app's utility and reliability.

### Pros

- Worked great initially and before recent updates.
- Connects well on Apple devices.
- Ability to share reports via phone text or email has improved.
- Some users appreciate the basic functionality when it connects.
- Helpful for testing auxiliary battery systems when working properly.

### Cons

- Frequent connectivity issues with Android devices, especially after updates.
- App does not live update data while driving or during use.
- Mandatory access to location and media files raises privacy concerns.
- Sharing reports sometimes results in corrupted or unsupported files.
- Limited functionality such as inability to input VIN or multiple battery testing features, requiring manual fixes.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.cnlaunch.maxbattery)