ACC: Extending Your Android Battery Life

Do you charge your phone to 100% every night? After a year, the battery capacity noticeably decreases. ACC (Advanced Charging Controller) solves this problem by providing fine-grained control over the charging process.

What does ACC do?

This is a system module for rooted devices that:

• Stops charging when a specified level is reached (e.g., 80%)
• Monitors battery temperature
• Controls charging current and voltage
• Supports "idle mode" for constantly connected devices

Key Features

1. Smart Charge Stop

# Заряжать до 75%, возобновлять при падении до 70%
acc 75 70

ACC operates at the kernel level, so it:

• Saves 20-40% of charge cycles
• Prevents overheating
• Preserves battery capacity for years

2. Full Parameter Control

# Установить ограничение тока 500mA и напряжения 3900mV
acc -s mcc=500 mcv=3900

Supported features:

• Manual current/voltage settings
• Automatic cooling
• Scheduled operation

3. Non-Standard Scenario Support

• Always-on devices (kiosks, servers)
• Gaming sessions with AC power
• "Night" profiles with gentle charging

How Does It Work Technically?

ACC interacts with:

1. Linux kernel power_supply interface
2. Control parameter files in /sys/class
3. System daemons via hooks

Architecture:

• Main daemon accd
• Configuration in /data/adb/vr25/acc-data
• Plugin system for customization

Practical Applications

1. For regular users:

   • Install via Magisk/KernelSU
   • Launch acc to configure
   • Forget about battery overcharging

2. Custom firmware developers:

   • Integrate ACC into builds
   • Custom plugins for exotic chipsets

3. Enthusiasts:

   • Fine-tune charging profiles
   • Experiment with operation modes

ACC is a must-have for:

• Flaghip owners who want to preserve their battery
• Embedded solution developers
• Anyone using their phone as a GPS navigator

The project is actively developed, supports most devices, and genuinely extends battery life. If you have root access — definitely give it a try!

Tip: Start with conservative settings (75% max charge) and observe your device's behavior.