A fork of XYUU/BatteryUtils with dual-battery support for Lenovo ThinkPad laptops (e.g. T480, T470, X270).

This tool allows setting start / stop charging thresholds for both internal and external batteries via Lenovo's power management driver.

中文说明 / Chinese Version

• Set charge start / stop thresholds
• Supports dual-battery ThinkPad models
• Lightweight WinForms application
• No background service required

• Lenovo ThinkPad laptops with dual-battery design
  • T480 / T470 / X270 / similar models

⚠️ Single-battery or non-Lenovo devices are not supported.

• Windows 8 / Windows 10
• Lenovo Power Management Driver (IBMPmDrv)
• Run as Administrator

When clicking Apply, the program sends charge threshold commands to both battery IDs:

• 0x01 — Internal battery
• 0x02 — External battery

On single-battery systems or unsupported devices, this behavior is untested and may cause undefined behavior.

Use at your own risk.

See the Releases page for prebuilt binaries:

• BatteryUtils-net35.exe — .NET Framework 3.5
• BatteryUtils-net40.exe — .NET Framework 4 (recommended)

Original project by XYUU:
https://github.com/XYUU/BatteryUtils

This fork adds dual-battery support and refactors the code for maintainability.