This is an AI-assisted analysis of Shizuku-related usages in the app's public source code. It is best effort, so it may not catch every single usage.

How this app uses Shizuku

S Battery Tweaker uses Shizuku to run privileged shell commands that control Samsung charging hardware and protected settings. All commands use fixed arguments built by the app, not freeform user input.

• Toggle fast charging: automatically disables or re-enables wired adaptive_fast_charging and wireless fast charging based on battery temperature, charge level, schedule and cooldown timer, applied with the settings put shell command through Shizuku.
• Control kernel charging switch: reads and writes /sys/class/sec/switch/afc_disable when the fast charging setting is not exposed, to check status and switch fast charging on or off.
• Manage idle bypass charging: pauses charging and powers the phone directly by writing pass_through and protect_battery with settings put and by reading and writing /sys/class/power_supply/battery/batt_full_capacity.
• Show battery health: reads /sys/class/power_supply/battery/fg_fullcapnom and the full capacity file through Shizuku to display remaining capacity and bypass support.
• Adjust refresh rate: lowers min_refresh_rate and peak_refresh_rate when the screen is off and restores them when the screen turns on, applied with settings put through Shizuku.
• Install settings helper: installs the bundled settings database provider APK with pm install through Shizuku on newer Android versions.
• Restart app: restarts the app itself with am force-stop after helper install or permission changes to apply the new state.

Android APIs or commands used

• settings put

• pm install
• am force-stop
• ls
• cat
• echo

Notable details

On older Android versions the helper app can install through the normal package installer without Shizuku. Many settings writes first try the normal system settings API or the helper provider, using Shizuku only when those fail.