1. Introduction
Thank you for purchasing the Raugee RY004 USB Coffee Cup Heater Mug Warmer. This device is designed to keep your beverages at an optimal drinking temperature, ensuring your coffee, tea, milk, or other drinks remain warm for extended periods. Its compact, portable design and easy-to-use features make it perfect for home, office, or travel use.
2. Important Safety Instructions
- Read all instructions before use.
- Do not immerse the device in water or other liquids. While the surface is waterproof, the entire unit is not designed for submersion.
- Keep out of reach of children and pets.
- Use only with a DC 5V USB power source. Do not use with higher voltage adapters.
- Unplug the device when not in use or before cleaning.
- Do not operate if the cord or plug is damaged.
- Do not touch the heating surface immediately after removing a hot cup, as it may still be warm.
- Ensure the cup is placed centrally on the heating surface for optimal performance.
- Avoid placing flammable materials near the warmer.
3. Package Contents
- 1 x Raugee RY004 Mug Warmer
- 1 x USB Power Cable (0.8m)
4. Product Overview
The Raugee RY004 features a sleek, minimalist design with a tempered glass heating panel and a durable aluminum alloy casing. It is equipped with silicone non-slip foot pads for stability and a single touch-sensitive button for operation.
Figure 1: Raugee RY004 Mug Warmer with touch control.
Figure 2: Compact and portable design (120mm diameter, 7mm thickness).
5. Setup
- Place the mug warmer on a flat, stable, and heat-resistant surface.
- Connect the USB power cable to the warmer.
- Plug the USB-A end of the cable into a compatible DC 5V power source, such as a power bank, mobile phone charger (USB wall adapter), or a computer's USB port.
Figure 3: Portable USB charging options.
Video 1: Demonstration of connecting the mug warmer to a USB power source and placing a cup on it.
6. Operation
- Power On/Temperature Selection: Place your cup containing the beverage onto the center of the heating surface. Gently touch the power button (the small circle on the surface) to turn on the warmer and cycle through the temperature settings.
- Temperature Stages: The warmer offers three distinct temperature stages for your preference:
- Stage 1: Approximately 40-45°C
- Stage 2: Approximately 46-50°C
- Stage 3: Approximately 51-60°C
- Automatic Shut-off: For safety and energy saving, the mug warmer is equipped with an 8-hour automatic shut-off function.
- Heat Preservation: The smart time setting allows for heat preservation between 1 to 9 hours.
- Power Off: To turn off the device, cycle through the temperature settings until the indicator light turns off, or simply unplug it from the power source.
Figure 4: Three temperature stages available.
Figure 5: Smart time setting with 8-hour auto shut-off.
Figure 6: Support for various cup materials and types.
7. Maintenance and Cleaning
The mug warmer features a waterproof conductive glass design, making it easy to clean.
- Always unplug the device from the power source before cleaning.
- Wipe the heating surface and body with a soft, damp cloth.
- Do not use abrasive cleaners or scouring pads, as they may scratch the surface.
- Ensure the device is completely dry before plugging it back in.
Figure 7: Waterproof surface allows for easy cleaning.
8. Troubleshooting
- Device not heating or indicator light not on:
Ensure the USB cable is securely connected to both the warmer and a functioning DC 5V power source. Try a different USB port or power adapter. - Beverage not warm enough:
Ensure the cup is placed flat and centrally on the heating surface. For best results, use thin-walled, flat-bottomed cups made of glass, ceramic, or stainless steel. Thick-bottomed or insulated cups may not transfer heat efficiently. - Device automatically turns off:
This is a normal function due to the 8-hour auto shut-off safety feature. If you wish to continue warming, simply turn it back on.
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | RY004 |
| Brand Name | raugee |
| Power Input | DC 5V (USB Powered) |
| Power (W) | Less than 750W (Actual device power is significantly lower, typical for USB devices) |
| Temperature Settings | 3 stages: 40-45°C, 46-50°C, 51-60°C (55°C constant temperature mode) |
| Auto Shut-off | 8 hours |
| Heat Preservation Timer | 1-9 hours (Smart Time Setting) |
| Dimensions | Approx. 120mm (Diameter) x 7mm (Thickness) |
| Cable Length | 0.8 meters |
| Material | Tempered Glass Panel, Aluminum Alloy Casing, Silicone Non-slip Foot Pads |
| Certification | CE |
| Origin | Mainland China |
10. User Tips
- Power Consumption: This device is USB powered (DC 5V) and is designed for low power consumption to maintain warmth, not to rapidly heat cold beverages. The stated "<750W" is a general category, not the actual wattage of this specific product.
- USB Connector: The warmer comes with a standard USB-A connector. It does not come with a USB-C connector.
- Versatile Use: Beyond beverages, this warmer can also be used to keep baby bottles warm or even to gently warm scented candles to release their fragrance.
- Optimal Cup Choice: For the most effective warming, use cups with a flat bottom and thin walls.
Figure 8: Versatile applications for various hot drinks and more.
11. Warranty and Support
For any product inquiries, technical support, or warranty claims, please contact the seller directly through your purchase platform. Keep your purchase receipt as proof of purchase.
