210W Screen-On Extreme Fast Charging Mod icon

210W Screen-On Extreme Fast Charging Mod

v3.0guidecommunity

Unlocks maximum charging current and wattage (up to 210W) during active screen-on time on Xiaomi and Redmi devices by overriding thermal policies with 80°C hardware protection.

Community Package•Battery & Power Management•by He Zheng & Class 6 Grade 1•GPL-3.0-only•Updated Jan 1, 2023
Platforms:
✓ Magisk✓ KernelSU✓ APatch
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super-charge-210w-booster-v3.0.zip

Overview

210W Screen-On Extreme Fast Charging Mod (authored by He Zheng & Class 6 Grade 1) is a comprehensive low-level charging power unlocker designed for Xiaomi, Redmi, and POCO smartphones.

In stock MIUI and HyperOS builds, Xiaomi aggressively throttles fast charging whenever the display screen is turned on—often reducing a 67W or 120W connection down to a sluggish 15W–18W to minimize surface temperatures. This module reconstructs the device thermal engine rules, allowing users to experience full-speed charging while gaming, navigating, or streaming videos.

Technical Architecture & How It Works

The module executes a thorough multi-tier vendor systemless override across kernel modules, user-space daemons, and configuration files:

1. Thermal Engine Replacement & Binary Daemons

The module patches vendor thermal binaries located under /system/vendor/bin/:

  • thermal-engine-v2
  • mi_thermald
  • thermal_manager

These binaries interface with Linux sysfs nodes (/sys/class/power_supply/battery/current_now and /sys/class/qcom-chg/) to modulate charging step currents.

2. Vendor Policy Overrides

The module supplies comprehensive configuration overrides across /system/vendor/etc/:

  • thermal-global-u-chg-only.conf
  • thermal-global-u-nolimits.conf
  • thermal_configs.xml (game engine integration)

Under these customized policies, step-down throttling thresholds during screen illumination are removed, instructing the charge controller to maintain maximum negotiation wattage.

3. Safety Guardrails (80°C Hardware Protection)

Fast charging without OEM throttling demands hardware safeguards. The module implements:

  • 80°C Emergency Threshold: If battery temperature sensor telemetry crosses 80°C, the daemon cuts charging current for 10 seconds or switches to trickle charging, ensuring absolute protection against thermal runaway.

Verification & Monitoring

Monitor live charging current and wattage while the screen is awake:

# Query active battery charging metrics
cat /sys/class/power_supply/battery/current_now
cat /sys/class/power_supply/battery/voltage_now

# Calculate real-time charging wattage:
# (current_now [uA] / 1,000,000) * (voltage_now [uV] / 1,000,000) = Watts

Frequently Asked Questions

Will this damage my smartphone or battery?

The module removes software throttling caps that lower charging speed when the screen is turned on. However, because battery charging generates heat, the module includes a strict 80°C emergency cut-off to prevent thermal runaway. Using a phone cooling fan during intense gaming while fast-charging is strongly recommended.

Can a 33W phone suddenly charge at 210W with this module?

No. Charging wattage is fundamentally governed by device hardware (battery charge pump ICs, dual-cell configurations, and power management PMIC). The module allows each phone to reach its maximum physical charging ceiling while the screen is on, rather than being artificially throttled.