1. Introduction
This manual provides instructions for the proper setup, operation, and maintenance of your GameSir X5 Lite Phone Controller and FX5 Cooler. The X5 Lite is designed to enhance your mobile gaming experience on compatible smartphones and tablets, while the FX5 Cooler provides efficient cooling to prevent overheating during extended use.
The GameSir X5 Lite controller is compatible with Android and iOS devices, including iPhone 15/16 and Android devices, and is stretchable to fit devices up to 213mm, such as iPad Mini 6/7. It features an ultra-stable Type-C connection for lag-free gaming. The GameSir FX5 Cooler is specifically designed to seamlessly clip onto the X5 series controllers' telescopic rod, offering a secure and quick installation.
2. Package Contents
- GameSir X5 Lite Phone Controller
- GameSir FX5 Cooler
- USB-C Cable (for charging/powering)
- User Manual (this document)
3. Setup
3.1 GameSir X5 Lite Controller Setup
- Attach Your Device: Gently stretch the X5 Lite controller's telescopic rod to fit your smartphone or tablet. Ensure your device is securely seated in the controller's grips. The controller supports devices up to 213mm in length.
- Connect via Type-C: Plug your device's Type-C port into the controller's integrated Type-C connector. This establishes a direct, low-latency connection for optimal gaming performance.

Image 1: GameSir X5 Lite Phone Controller with a smartphone attached. This image shows the controller extended with a phone in place, illustrating its ergonomic design and button layout.
3.2 GameSir FX5 Cooler Installation
- Identify Attachment Point: Locate the designated attachment area on the X5 Lite controller's telescopic rod. The FX5 Cooler is designed to clip onto this specific section.
- Clip On: Align the FX5 Cooler with the attachment point and gently press it into place until it securely clips onto the controller. The design ensures a firm and stable connection.

Image 2: GameSir FX5 Thermoelectric Cooler. This image displays the compact design of the FX5 cooler, highlighting its thermoelectric cooling technology.

Image 3: GameSir FX5 Cooler attached to the X5 Lite controller. This image shows the FX5 cooler mounted on the X5 Lite controller, demonstrating its integrated use.
4. Operating Instructions
4.1 Using the X5 Lite Controller
- Once your device is connected, the X5 Lite controller should be automatically recognized by most compatible games and operating systems.
- Refer to your game's settings for controller mapping and customization options.
- Ensure your device's operating system is updated to the latest version for optimal compatibility.
4.2 Operating the FX5 Cooler
The FX5 Cooler offers dual power options for flexible use:
- Wireless Mode: Powered by the included 3000mAh magnetic battery module. This mode provides three cooling power levels: 7.2W, 8.9W, and 10.6W.
- Wired Mode: Powered via the cooler's power port using a 5V/3A adapter (not included). This mode provides three higher cooling power levels: 9.7W, 11.5W, and 12.6W.
To activate the cooler, press the power button located on the FX5 unit. Subsequent presses will cycle through the available cooling levels. To turn off the cooler, press and hold the power button.

Image 4: Diagram illustrating the innovative design of the FX5 Cooler. This image highlights key features such as vertical airflow, a 25mm*25mm cooling plate for efficient heat dissipation, and a 3000mAh magnetic battery module.

Image 5: Diagram detailing the dual power options for the FX5 Cooler. This image shows both wireless operation via the magnetic battery and wired operation requiring a 5V/3A adapter, along with their respective cooling power levels.
5. Maintenance
- Cleaning: Use a soft, dry cloth to wipe down the controller and cooler. Avoid using harsh chemicals or abrasive materials, as these can damage the surfaces.
- Storage: When not in use, store the X5 Lite and FX5 Cooler in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care (FX5 Cooler): If using the magnetic battery module, ensure it is charged periodically even if not in regular use to maintain battery health.
6. Troubleshooting
- Controller Not Responding:
- Ensure your device is securely connected via the Type-C port.
- Check if your device's operating system is updated.
- Restart your device and reconnect the controller.
- FX5 Cooler Not Turning On:
- If using wireless mode, ensure the magnetic battery module is fully charged and properly attached.
- If using wired mode, ensure the 5V/3A adapter is correctly connected and providing power.
- Press and hold the power button for a few seconds to ensure it's not just a short press.
- Poor Cooling Performance:
- Ensure the cooler's vents are not obstructed.
- Verify the cooler is set to a higher power level if needed.
- For optimal performance, use wired mode with a 5V/3A adapter.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | GameSir |
| Model | X5 Lite (Controller), FX5 (Cooler) |
| Compatible Devices | Android, iOS (Smartphones, Tablets) |
| Controller Type | Gamepad |
| Connectivity Technology | USB Type-C (X5 Lite) |
| X5 Lite Stretch Length | Up to 213mm |
| FX5 Cooler Power (Wireless) | 7.2W - 10.6W (3 levels) |
| FX5 Cooler Power (Wired) | 9.7W - 12.6W (3 levels, requires 5V/3A adapter) |
| FX5 Cooler Battery | 3000mAh Magnetic Battery Module |
8. Warranty and Support
For warranty information and technical support, please refer to the official GameSir website or contact GameSir customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.
GameSir Official Website: https://www.gamesir.hk/