How to Stop Phone Charging via USB Programmatically
While it’s generally not recommended to directly control charging behavior, here’s a breakdown of how you can approach this programmatically.
Understanding the Challenges
Hardware Limitations
Most mobile operating systems, including Android and iOS, don’t provide direct access to battery management at the level required to completely block charging.
Security Concerns
Allowing applications to arbitrarily stop charging could lead to serious security vulnerabilities. Battery drain and potential device damage are real risks if charging is interfered with.
Alternative Approaches
Instead of directly blocking charging, consider these alternatives:
- Battery Optimization Features: Many Android devices offer built-in battery optimization features. Explore your phone’s settings to see if you can limit charging to specific time ranges or when the device is idle.
- Power Management Apps: Third-party apps designed for battery optimization might offer options to restrict charging or limit the amount of current allowed. However, be cautious about granting excessive permissions to such applications.
- USB Debugging Mode: If you have USB debugging enabled, some ADB commands (Android Debug Bridge) can be used to access battery information, but these commands typically don’t directly control charging behavior.
Code Example (Android, ADB):
For demonstration purposes, here’s a snippet showing how to retrieve battery information using ADB.
adb shell dumpsys battery
BatteryService: ac powered: false usb powered: true wireless powered: false level: 90 health: 2 plugged: 1 temperature: 28 voltage: 3997 present: true scale: 100 status: 2
Cautionary Note
It’s important to emphasize that modifying charging behavior programmatically is generally discouraged due to potential risks and limitations. Consult with device manufacturers or authorized service centers if you encounter charging problems.