Once installed, the app will likely ask for permissions to monitor system resources; only grant what is necessary for the app to function (e.g., battery stats).

Some hardware-specific monitors (like smart battery shunts) provide APKs directly via their official websites or representative emails. 2. Build Your Own APK from Source

Navigate to Settings > Apps > Special app access > Install unknown apps and grant permission to your browser or file manager.

For specific versions or builds not in the Play Store, reputable sites like APKMirror or the Aurora Store are generally considered safer for downloading APK files.

Could you specify if you are looking for a (like Victron or a smart shunt) or a particular open-source project ? I can give you more exact build instructions if I know the project name.