Razer Blade control utility

This is a fork of the razer-ctl program that tdakhran first created in 2024. It has been updated to add support for the new Razer Blade 16 2025. It is still very much a work in progress and not all features have been tested on all models so your milage may vary.

The supported devices are :

• Razer Blade 16 2025 (RTX 5080/5090)
• Razer Blade 16 2024
• Razer Blade 16 2023
• Razer Blade 15 2022
• Razer Blade 14 2023

What can it control?

• Performance modes (including overclock & Hyperboost)
• Battery care (charge limiting) - 50%, 55%, 60%, 65%, 70%, 75%, 80%, or disabled (100%)
• Fan control (auto/manual with RPM settings)
• Lid logo modes: off, static, breathing
• Keyboard brightness (works on Windows with Fn keys anyway)
• Lights always-on toggle
• dGPU process termination (battery saving)

Battery Care Feature

The enhanced battery care system allows setting precise charge limits to optimize battery longevity:

Available Options: 50%, 55%, 60%, 65%, 70%, 75%, 80%, or disabled (100%)

Usage:

# CLI
./razer-cli auto battery-care set 50    # Set to 50% limit
./razer-cli auto battery-care get       # Check current setting

# Tray Menu
Right-click tray icon → Battery Care → Select percentage

Compatibility:

• ✅ Verified: Razer Blade 16 (2024), Razer Blade 16 (2023)
• 🔄 Expected to work: All models with battery-care feature (Blade 14/15/16 series)
• ℹ️ Note: Percentages match official Razer Synapse Battery Health Optimizer (50-80% range)

If you experience issues on your model, please report with your device model and PID.

What is missing vs ghelper?

• Power settings seem to have no effect when AC power unplugged and on battery.
• Windows power plan control
• Detecting and disabling / closing apps which use GPU when needed to save power
• GUI for fan controls
• Custom power targets for GPU and CPU - can't do as Razer interface doesn't support it.

Reverse Engineering

Read about the reverse engineering process for Razer Blade 16 in data/README.md. You can follow the steps and adjust the utility for other Razer laptops.

Run razer-cli enumerate to get PID. Then razer-cli -p 0xPID info to check if the application works for your Razer device.

Special thanks to

• tdakhran for the original code for this fork repository
• openrazer for Reverse-Engineering-USB-Protocol
• Razer-Linux for USB HID protocol implementation

FAQ

Q: How to build?

A: I build in WSL2(Arch) with cargo run --release --target x86_64-pc-windows-gnu --bin razer-tray.

Q: Does it work on Linux?

A: Yes! Fully tested on Linux with native device detection, GTK tray support, and proper permissions via plugdev group.

Q: Why Windows Defender tells me it is a Trojan

A: Read rust-lang/rust#88297, and make sure recent Intelligence Updates are installed for Microsoft Defender.

Q: What's the easiest way to try?

A: Download razer-tray.exe from Releases and launch it.