BatteryRemapper is a lightweight, headless Xposed/LSPosed module designed for modern, highly customized Android environments. It recalibrates the operating system's battery reporting scale, mapping a physical battery range of 20% – 80% directly into a displayed 0% – 100% layer.
By constraining your operational cycle to these healthy thresholds, this module dramatically slows down chemical aging and extends the longevity of your device's physical lithium-ion battery.
- Linear Scale Remapping: Compresses a physical 60% battery capacity swing (20% to 80%) into a seamless, user-facing 0% to 100% display layer.
- Dynamic Intent Interception: Hooks deeply into the
Intent.getIntExtralayer within the System UI, making it highly compatible with modern, heavily modified custom AOSP ROMs. - Smart Hysteresis Battery Saver Automation: Automatically manages your Android Battery Saver profile based on your remapped percentages to eliminate constant state-toggling:
- Triggers ON: Automatically forces Battery Saver mode ON the moment your remapped scale drops to 20% or below.
- Triggers OFF: Automatically forces Battery Saver mode OFF when your remapped scale charges past 50%.
- Hysteresis Dead-Zone: Keeps the existing power state completely stable between 21% – 50% when unplugged to prevent power-flickering.
- Charging Bypass: Instantly kills and disables Battery Saver mode the moment a charger (AC/USB/Wireless) is connected, allowing unthrottled charging performance.
- 30-Second Shutdown Countdown: When your physical battery drops to your absolute limit of 20% (showing 0% on screen), a system-level alert dialog pops up with a 30-second countdown.
- Smart Charger Abort: Plugging in your charger at any point during the 30-second countdown instantly cancels the shutdown sequence and dismisses the alert dialog.
- Pure SystemUI Execution: Runs with zero root shell overhead (
su) or permanent kernel-level RAM corruption by executing completely within the trustedcom.android.systemuiscope.
To ensure the module functions correctly, you must configure its scope properly inside your LSPosed / Vector Manager interface.
- System UI (
com.android.systemui)
Important
This module is engineered to run inside the System UI process. This ensures that your status bar, quick setting tiles, and lock screen graphics safely reflect your custom 0-100% scale, while your device's core Android system server still maintains accurate tracking of physical metrics.
Because the module maps a 60-point physical range into a 100-point display range, every 1% change in physical battery translates to roughly 1.66% change on your screen.
| Actual Physical Battery | Displayed Status Bar Battery | Current Behavior & States |
|---|---|---|
| 80% and above | 100% |
Upper charge ceiling cap |
| 65% | 75% |
Intermediate remapped value |
| 51% | 51% |
Battery Saver turns OFF if unplugged |
| 25% | 8% |
Low battery threshold — Battery Saver is ON |
| 20% and below | 0% |
Triggers the 30-second shutdown countdown |
- Stepped Percentage Drops: Because of the compressed mathematical mapping, your status bar percentage will occasionally skip digits (e.g., jumping directly from 77% to 75%). This is intended, native mathematical behavior.
- Kernel Supply Access: Apps that pull battery data bypassing the Java framework directly from the Linux kernel file node layer (
/sys/class/power_supply/battery/capacity) will still read the true physical percentage rather than your remapped scale.
- Environment Requirement: Functioning Zygisk environment via Magisk or KernelSU.
- Framework Requirement: LSPosed / Vector Framework.
- Target Architecture: Verified on modern Android 16 AOSP architectures (specifically tested on custom implementations like Evolution X and crDroid builds).
- ROM Compatibility: Fully compatible with heavily modified status bar engines that deploy custom battery styles like Circles, Dotted Icons, Landscape pills, and Text indicators.
